| Juncus abjectus F.J.Herm. | Synonym |  | IOPI |  | 
	
		| Juncus abortivus Chapm. | Synonym |  | IOPI |  | 
	
		| Juncus achalensis Barros | Synonym |  | IOPI |  | 
	
		| Juncus acicularis H.Roux | Synonym |  | IOPI |  | 
	
		| Juncus acuminatus Michx. | Accepted |  | IOPI |  | 
	
		| Juncus acuminatus Salzm. ex Kunth [Invalid] | Synonym |  | IOPI |  | 
	
		| Juncus acuminatus Balb. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus acuminatus var. acuminatus | Synonym |  | TRO |  | 
	
		| Juncus acuminatus f. acuminatus | Synonym |  | TRO |  | 
	
		| Juncus acuminatus var. debilis (A.Gray) Engelm. | Synonym |  | IOPI |  | 
	
		| Juncus acuminatus var. diffusissimus (Buckley) Engelm. | Synonym |  | IOPI |  | 
	
		| Juncus acuminatus var. legitimus Engelm. | Synonym |  | IOPI |  | 
	
		| Juncus acuminatus var. multiceps (Kunze) Barros | Synonym |  | IOPI |  | 
	
		| Juncus acuminatus f. obtusatus F.J.Herm. | Synonym |  | IOPI |  | 
	
		| Juncus acuminatus var. robustus Engelm. | Synonym |  | IOPI |  | 
	
		| Juncus acuminatus f. sphaerocephalus F.J.Herm. | Synonym |  | IOPI |  | 
	
		| Juncus acutangulus Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus acutiflorus Ehrh. ex Hoffm. | Accepted |  | IOPI |  | 
	
		| Juncus acutiflorus subsp. acutiflorus | Synonym |  | IOPI |  | 
	
		| Juncus acutiflorus var. alpinus (Vill.) Gaudin | Synonym |  | IOPI |  | 
	
		| Juncus acutiflorus var. exoletus Rchb. | Synonym |  | IOPI |  | 
	
		| Juncus acutiflorus var. genuinus Cout. [Invalid] | Synonym |  | IOPI |  | 
	
		| Juncus acutiflorus var. hagenbachianus Gaudin | Synonym |  | IOPI |  | 
	
		| Juncus acutiflorus var. laxus Spenn. | Synonym |  | IOPI |  | 
	
		| Juncus acutiflorus var. microcephalus Husn. | Synonym |  | IOPI |  | 
	
		| Juncus acutiflorus var. minor J.Gay ex Laharpe | Synonym |  | IOPI |  | 
	
		| Juncus acutiflorus var. multiflorus Weihe ex Spenn. | Synonym |  | IOPI |  | 
	
		| Juncus acutiflorus subsp. multiflorus Asch. & Graebn. | Synonym |  | IOPI |  | 
	
		| Juncus acutiflorus var. pallidiflorus Schur | Synonym |  | IOPI |  | 
	
		| Juncus acutiflorus var. pauciflorus Spenn. | Synonym |  | IOPI |  | 
	
		| Juncus acutiflorus var. repens J.Gay ex Laharpe | Synonym |  | IOPI |  | 
	
		| Juncus acutiflorus subsp. rugosus (Steud.) Cout. | Accepted |  | IOPI |  | 
	
		| Juncus acutiflorus var. rugosus (Steud.) Cout. | Synonym |  | IOPI |  | 
	
		| Juncus acutiflorus var. tenuifolius Gaudin | Synonym |  | IOPI |  | 
	
		| Juncus acutiflorus var. viviparus Spenn. | Synonym |  | IOPI |  | 
	
		| Juncus acutissimus (Buchenau) Adamson | Synonym |  | IOPI |  | 
	
		| Juncus acutomaritimus E.Mey. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus acutus L. | Accepted |  | IOPI |  | 
	
		| Juncus acutus subsp. acutus | Synonym |  | IOPI |  | 
	
		| Juncus acutus var. decompositus Guss. | Synonym |  | IOPI |  | 
	
		| Juncus acutus subsp. decompositus (Guss.) Arcang. | Synonym |  | IOPI |  | 
	
		| Juncus acutus var. effusus Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus acutus var. gallicus (Asch. & Graebn.) Rouy | Synonym |  | IOPI |  | 
	
		| Juncus acutus var. heldreichianus (T.Marsson ex Parl.) Halácsy | Synonym |  | IOPI |  | 
	
		| Juncus acutus subsp. leopoldii (Parl.) Snogerup | Accepted |  | IOPI |  | 
	
		| Juncus acutus var. leopoldii (Parl.) Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus acutus var. littoralis (C.A.Mey.) Trautv. | Synonym |  | IOPI |  | 
	
		| Juncus acutus subsp. littoralis (C.A.Mey.) Feinbrun | Synonym |  | IOPI |  | 
	
		| Juncus acutus var. longibracteatus Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus acutus var. microcarpus (Loret & Barrandon) Husn. | Synonym |  | IOPI |  | 
	
		| Juncus acutus subsp. multibracteatus (Tineo) K.Richt. | Synonym |  | IOPI |  | 
	
		| Juncus acutus var. sphaerocarpus Engelm. | Synonym |  | IOPI |  | 
	
		| Juncus acutus subsp. tommasinii (Parl.) Arcang. | Synonym |  | IOPI |  | 
	
		| Juncus acutus var. tommasinii (Parl.) Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus acutus subsp. tyraicus (Pacz.) I.Grint. | Synonym |  | IOPI |  | 
	
		| Juncus acutus subsp. variegatus (Caruel) Nyman | Synonym |  | IOPI |  | 
	
		| Juncus acutus f. xanthosus Jeps. | Synonym |  | IOPI |  | 
	
		| Juncus acutus var. xanthosus Jeps. | Synonym |  | TRO |  | 
	
		| Juncus adriaticus Gand. | Synonym |  | IOPI |  | 
	
		| Juncus adscendens Host [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus aemulans Liebm. | Accepted |  | IOPI |  | 
	
		| Juncus affinis Gaudin | Synonym |  | IOPI |  | 
	
		| Juncus affinis R.Br. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus afghanicus Snogerup | Synonym |  | IOPI |  | 
	
		| Juncus agrostophyllus F.Muell. [Invalid] | Synonym |  | IOPI |  | 
	
		| Juncus alatus Franch. & Sav. | Accepted |  | IOPI |  | 
	
		| Juncus albescens Satake [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus albescens (Lange) Fernald | Synonym |  | IOPI |  | 
	
		| Juncus albicans Fernald | Synonym |  | IOPI |  | 
	
		| Juncus albidus Hoffm. | Synonym |  | IOPI |  | 
	
		| Juncus aletaiensis K.F.Wu | Synonym |  | IOPI |  | 
	
		| Juncus alexandri L.A.S.Johnson | Accepted |  | IOPI |  | 
	
		| Juncus alexandri subsp. alexandri | Synonym |  | IOPI |  | 
	
		| Juncus allioides Franch. | Accepted |  | IOPI |  | 
	
		| Juncus alpestris Bubani [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus alpestris Hartm. | Synonym |  | IOPI |  | 
	
		| Juncus alpigenus K.Koch | Accepted |  | IOPI |  | 
	
		| Juncus × alpiniformis Fernald | Accepted |  | IOPI |  | 
	
		| Juncus alpinoarticulatus Chaix | Accepted |  | IOPI |  | 
	
		| Juncus alpinoarticulatus subsp. alpestris (Hartm.) Hämet-Ahti | Accepted |  | IOPI |  | 
	
		| Juncus alpinoarticulatus subsp. alpinoarticulatus | Synonym |  | IOPI |  | 
	
		| Juncus alpinoarticulatus subsp. americanus (Farw.) Hämet-Ahti | Accepted |  | IOPI |  | 
	
		| Juncus alpinoarticulatus subsp. arthrophyllus (Brenner) Reichg. | Synonym |  | IOPI |  | 
	
		| Juncus alpinoarticulatus subsp. arthrophyllus Reichgelt | Synonym |  | TRO |  | 
	
		| Juncus alpinoarticulatus subsp. atricapillus (Drejer ex Lange) Reichg. | Synonym |  | IOPI |  | 
	
		| Juncus alpinoarticulatus subsp. fischerianus (Turcz. ex V.I.Krecz.) Hämet-Ahti | Accepted |  | IOPI |  | 
	
		| Juncus alpinoarticulatus subsp. fuscescens (Fernald) Hämet-Ahti | Accepted |  | IOPI |  | 
	
		| Juncus alpinoarticulatus subsp. fuscoater (Schreb.) O.Schwarz | Synonym |  | IOPI |  | 
	
		| Juncus alpinoarticulatus var. marshallii (Pugsley) P.D.Sell | Synonym |  | IOPI |  | 
	
		| Juncus alpinoarticulatus subsp. nodulosus (Wahlenb.) Hämet-Ahti | Synonym |  | IOPI |  | 
	
		| Juncus alpinoarticulatus subsp. rariflorus (Hartm.) Holub | Accepted |  | IOPI |  | 
	
		| Juncus alpinopilosus Chaix | Synonym |  | IOPI |  | 
	
		| Juncus alpinus Vill. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus alpinus f. acicularis Lindq. | Synonym |  | IOPI |  | 
	
		| Juncus alpinus var. alpestris (Hartm.) Almq. | Synonym |  | IOPI |  | 
	
		| Juncus alpinus subsp. alpestris (Hartm.) Á.Löve & D.Löve | Synonym |  | IOPI |  | 
	
		| Juncus alpinus var. americanus Farw. | Synonym |  | IOPI |  | 
	
		| Juncus alpinus f. carpathicus Racib. | Synonym |  | IOPI |  | 
	
		| Juncus alpinus var. carpaticus (Simonk.) Nyman | Synonym |  | IOPI |  | 
	
		| Juncus alpinus var. erectus Racib. | Synonym |  | IOPI |  | 
	
		| Juncus alpinus var. fuscescens Fernald | Synonym |  | IOPI |  | 
	
		| Juncus alpinus var. fuscoater (Schreb.) Rchb. | Synonym |  | IOPI |  | 
	
		| Juncus alpinus subsp. fuscoater (Schreb.) H.Lindb. | Synonym |  | IOPI |  | 
	
		| Juncus alpinus f. giganteus Erdner | Synonym |  | IOPI |  | 
	
		| Juncus alpinus f. grandiceps Lindq. | Synonym |  | IOPI |  | 
	
		| Juncus alpinus var. grandiflorus Beyer | Synonym |  | IOPI |  | 
	
		| Juncus alpinus var. insignis Fr. ex Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus alpinus var. macrocephalus Hyl. | Synonym |  | IOPI |  | 
	
		| Juncus alpinus var. marshallii (Pugsley) Lindq. | Synonym |  | IOPI |  | 
	
		| Juncus alpinus subsp. nodulosus (Wahlenb.) Lindm. | Synonym |  | IOPI |  | 
	
		| Juncus alpinus f. obtusatus (Hartm.) Lindq. | Synonym |  | IOPI |  | 
	
		| Juncus alpinus subsp. rariflorus (Hartm.) K.Richt. | Synonym |  | IOPI |  | 
	
		| Juncus alpinus var. rariflorus (Hartm.) Hartm. | Synonym |  | IOPI |  | 
	
		| Juncus alpinus subsp. requienii (Parl.) Nyman | Synonym |  | IOPI |  | 
	
		| Juncus alpinus var. requienii (Parl.) Husn. | Synonym |  | IOPI |  | 
	
		| Juncus alpinus subsp. turczaninowii (Buchenau) Vorosch. | Synonym |  | IOPI |  | 
	
		| Juncus alpinus var. uniceps (Laest. ex Wahlenb.) Hartm. | Synonym |  | IOPI |  | 
	
		| Juncus altus Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus amabilis Edgar | Accepted |  | IOPI |  | 
	
		| Juncus ambiguus Guss. | Synonym |  | IOPI |  | 
	
		| Juncus ambiguus T.A.Cope & C.A.Stace [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus ambiguus var. ossoraicus (Novikov) Novikov | Synonym |  | IOPI |  | 
	
		| Juncus ambiguus subsp. turkestanicus (V.I.Krecz. & Gontsch.) Novikov | Synonym |  | IOPI |  | 
	
		| Juncus amblyocarpus Rydb. | Synonym |  | IOPI |  | 
	
		| Juncus amplifolius A.Camus | Accepted |  | IOPI |  | 
	
		| Juncus amplifolius var. amplifolius | Synonym |  | TRO |  | 
	
		| Juncus amplifolius var. pumilus A.Camus | Synonym |  | IOPI |  | 
	
		| Juncus amuricus (Maxim.) V.I.Krecz. & Gontsch. | Accepted |  | IOPI |  | 
	
		| Juncus amuricus var. wui Novikov | Synonym |  | IOPI |  | 
	
		| Juncus anatolicus Snogerup | Accepted |  | IOPI |  | 
	
		| Juncus anceps Laharpe | Accepted |  | IOPI |  | 
	
		| Juncus anceps var. atricapillus (Drejer ex Lange) Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus anceps f. coarctatus Lindq. | Synonym |  | IOPI |  | 
	
		| Juncus anceps var. congestus Lange | Synonym |  | IOPI |  | 
	
		| Juncus anceps subsp. herzegovinus Sagorski | Synonym |  | IOPI |  | 
	
		| Juncus anceps f. herzegovinus (Sagorski) Lindq. | Synonym |  | IOPI |  | 
	
		| Juncus anceps f. pumilus Lindq. | Synonym |  | IOPI |  | 
	
		| Juncus anceps var. sparsiflorus Lange | Synonym |  | IOPI |  | 
	
		| Juncus andersonii Buchenau | Accepted |  | IOPI |  | 
	
		| Juncus andicola Hook. | Synonym |  | IOPI |  | 
	
		| Juncus andicola var. schulz-korthii J.F.Macbr. | Synonym |  | IOPI |  | 
	
		| Juncus andicolus Hook. | Unresolved |  | TRO |  | 
	
		| Juncus andreanus Weath. | Synonym |  | IOPI |  | 
	
		| Juncus angelisii Ten. | Synonym |  | IOPI |  | 
	
		| Juncus angustifolius (Roth) Wulfen [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus annuus Krock. | Synonym |  | IOPI |  | 
	
		| Juncus anonymus Steud. | Synonym |  | IOPI |  | 
	
		| Juncus antarcticus Hook.f. | Accepted |  | IOPI |  | 
	
		| Juncus anthelatus (Wiegand) R.E.Brooks & Whittem. | Accepted |  | IOPI |  | 
	
		| Juncus antonianus Steud. [Invalid] | Synonym |  | IOPI |  | 
	
		| Juncus apiculatus Adamson | Synonym |  | IOPI |  | 
	
		| Juncus aquaticus (L.) All. | Synonym |  | IOPI |  | 
	
		| Juncus aquaticus subsp. fuscoater (Schreb.) Hagenb. | Synonym |  | IOPI |  | 
	
		| Juncus arabicus (Asch. & Buchenau) Adamson | Synonym |  | IOPI |  | 
	
		| Juncus arcticus Willd. | Accepted |  | IOPI |  | 
	
		| Juncus arcticus subsp. alaskanus Hultén | Accepted |  | IOPI |  | 
	
		| Juncus arcticus var. alaskanus (Hultén) Novikov | Synonym |  | IOPI |  | 
	
		| Juncus arcticus var. alaskanus (Hultén) S.L. Welsh | Synonym |  | TRO |  | 
	
		| Juncus arcticus var. andicola (Hook.) Balslev | Synonym |  | IOPI |  | 
	
		| Juncus arcticus subsp. arcticus | Synonym |  | IOPI |  | 
	
		| Juncus arcticus subsp. ater (Rydb.) Hultén | Synonym |  | IOPI |  | 
	
		| Juncus arcticus subsp. balticus (Willd.) Hyl. | Synonym |  | IOPI |  | 
	
		| Juncus arcticus var. balticus (Willd.) Trautv. | Synonym |  | IOPI |  | 
	
		| Juncus arcticus var. depauperatus Trautv. | Synonym |  | IOPI |  | 
	
		| Juncus arcticus var. gracilis Hook. | Synonym |  | IOPI |  | 
	
		| Juncus arcticus subsp. grubovii (Novikov) Novikov, Kirschner & Snogerup | Accepted |  | IOPI |  | 
	
		| Juncus arcticus subsp. intermedius Hyl. | Synonym |  | IOPI |  | 
	
		| Juncus arcticus var. inundatus (Drejer) Trautv. | Synonym |  | IOPI |  | 
	
		| Juncus arcticus var. littoralis (Engelm.) B.Boivin | Synonym |  | IOPI |  | 
	
		| Juncus arcticus subsp. littoralis (Engelm.) Hultén | Synonym |  | IOPI |  | 
	
		| Juncus arcticus var. mexicanus (Willd. ex Schult. & Schult.f.) Balslev | Synonym |  | IOPI |  | 
	
		| Juncus arcticus var. montanus (Engelm.) S.L.Welsh | Synonym |  | IOPI |  | 
	
		| Juncus arcticus var. muelleri (Trautv.) Kovt. | Synonym |  | IOPI |  | 
	
		| Juncus arcticus subsp. pyrenaeus (Timb.-Lagr. & Jeanb.) Rivas Goday & Borja | Synonym |  | IOPI |  | 
	
		| Juncus arcticus var. sitchensis Engelm. | Synonym |  | IOPI |  | 
	
		| Juncus arcticus var. tuvinicus Polozhij | Synonym |  | IOPI |  | 
	
		| Juncus arcuatus Wahlenb. | Synonym |  | IOPI |  | 
	
		| Juncus arequipensis Balslev | Synonym |  | IOPI |  | 
	
		| Juncus arianus V.I.Krecz. | Synonym |  | IOPI |  | 
	
		| Juncus aridicola L.A.S.Johnson | Accepted |  | IOPI |  | 
	
		| Juncus aristatus Larrañaga | Unresolved |  | IOPI |  | 
	
		| Juncus aristiflorus Clairv. | Synonym |  | IOPI |  | 
	
		| Juncus aristulatus Michx. | Synonym |  | IOPI |  | 
	
		| Juncus aristulatus var. pinetorum Coville | Synonym |  | IOPI |  | 
	
		| Juncus arizonicus Wiegand | Synonym |  | IOPI |  | 
	
		| Juncus arizonicus var. curtiflorus Wiegand | Synonym |  | IOPI |  | 
	
		| Juncus arthrophyllus Brenner | Synonym |  | TRO |  | 
	
		| Juncus articulatus L. | Accepted |  | IOPI |  | 
	
		| Juncus articulatus var. adscendens Beck | Synonym |  | IOPI |  | 
	
		| Juncus articulatus f. alpicola (Asch. & Graebn.) Sóo | Synonym |  | IOPI |  | 
	
		| Juncus articulatus f. alpigenus (Schur) Sóo | Synonym |  | IOPI |  | 
	
		| Juncus articulatus var. aquaticus L. | Synonym |  | IOPI |  | 
	
		| Juncus articulatus subsp. articulatus | Synonym |  | IOPI |  | 
	
		| Juncus articulatus var. articulatus | Synonym |  | TRO |  | 
	
		| Juncus articulatus f. articulatus | Synonym |  | TRO |  | 
	
		| Juncus articulatus var. brachycarpus (Trab.) Maire | Synonym |  | IOPI |  | 
	
		| Juncus articulatus var. cuspidatus (Brenner) Maire | Synonym |  | IOPI |  | 
	
		| Juncus articulatus var. fluitans Wahlenb. | Synonym |  | IOPI |  | 
	
		| Juncus articulatus var. hylandri Hämet-Ahti | Synonym |  | IOPI |  | 
	
		| Juncus articulatus subsp. limosus (Vorosch.) Vorosch. | Accepted |  | IOPI |  | 
	
		| Juncus articulatus var. lindhardii (Wiinst.) Wiinst. | Synonym |  | IOPI |  | 
	
		| Juncus articulatus var. littoralis Patze, E.Mey. & Elkan | Synonym |  | IOPI |  | 
	
		| Juncus articulatus f. macrocarpus (Döll) Sóo | Synonym |  | IOPI |  | 
	
		| Juncus articulatus subsp. macrocephalus (Viv.) K.Richt. | Synonym |  | IOPI |  | 
	
		| Juncus articulatus var. maritimus G.Mey. | Synonym |  | IOPI |  | 
	
		| Juncus articulatus f. natans (Glück) Sóo | Synonym |  | IOPI |  | 
	
		| Juncus articulatus var. nigrescens Lindem. | Synonym |  | IOPI |  | 
	
		| Juncus articulatus subsp. nigritellus (F.W.Schultz) K.Richt. | Synonym |  | IOPI |  | 
	
		| Juncus articulatus var. obtusatus Engelm. | Synonym |  | IOPI |  | 
	
		| Juncus articulatus var. pallescens Lindem. | Synonym |  | IOPI |  | 
	
		| Juncus articulatus f. pauciflorus Sóo | Synonym |  | IOPI |  | 
	
		| Juncus articulatus var. pelocarpus (E.Mey.) A.Gray | Synonym |  | IOPI |  | 
	
		| Juncus articulatus var. setiformis Patze, E.Mey. & Elkan | Synonym |  | IOPI |  | 
	
		| Juncus articulatus var. stolonifer (Wohll.) House | Synonym |  | IOPI |  | 
	
		| Juncus articulatus f. stolonifer (Wohll.) Raymond | Synonym |  | IOPI |  | 
	
		| Juncus articulatus var. subalpinus Borbás | Synonym |  | IOPI |  | 
	
		| Juncus articulatus f. submersus (Glück) Sóo | Synonym |  | IOPI |  | 
	
		| Juncus articulatus f. subobtusatus (Asch. & Graebn.) Sóo | Synonym |  | IOPI |  | 
	
		| Juncus articulatus var. sylvaticus L. | Synonym |  | IOPI |  | 
	
		| Juncus articulatus subsp. tatewakii (Satake) Vorosch. ex A.K.Skvortsov | Synonym |  | IOPI |  | 
	
		| Juncus articulatus f. viridiflorus (Asch. & Graebn.) I.Grint. | Synonym |  | IOPI |  | 
	
		| Juncus articulifolius Larrañaga | Unresolved |  | IOPI |  | 
	
		| Juncus asper Sauzé | Synonym |  | IOPI |  | 
	
		| Juncus asper Engelm. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus astreptus L.A.S.Johnson | Accepted |  | IOPI |  | 
	
		| Juncus ater Rydb. | Synonym |  | IOPI |  | 
	
		| Juncus atlanticus Laharpe | Synonym |  | IOPI |  | 
	
		| Juncus atratus Krock. | Accepted |  | IOPI |  | 
	
		| Juncus atratus Lam. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus atratus f. divaricatus (Heuffel) Sóo | Synonym |  | IOPI |  | 
	
		| Juncus atratus f. fuscescens Racib. | Synonym |  | IOPI |  | 
	
		| Juncus atratus f. hungaricus Borbás | Synonym |  | IOPI |  | 
	
		| Juncus atricapillus Drejer ex Lange | Synonym |  | IOPI |  | 
	
		| Juncus atrofuscus Rupr. | Synonym |  | IOPI |  | 
	
		| Juncus atropurpureus Adamson | Synonym |  | IOPI |  | 
	
		| Juncus attenuatus Viv. | Synonym |  | IOPI |  | 
	
		| Juncus aureus Pourr. | Synonym |  | IOPI |  | 
	
		| Juncus auritus K.F.Wu | Synonym |  | IOPI |  | 
	
		| Juncus austerus Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus australis Hook.f. | Accepted |  | IOPI |  | 
	
		| Juncus bachitii Hochst. ex Steud. | Synonym |  | IOPI |  | 
	
		| Juncus badius Suksd. | Synonym |  | IOPI |  | 
	
		| Juncus balansae Trab. [Invalid] | Synonym |  | IOPI |  | 
	
		| Juncus balticus Willd. | Accepted |  | IOPI |  | 
	
		| Juncus balticus var. alaskanus (Hultén) A.E. Porsild | Synonym |  | TRO |  | 
	
		| Juncus balticus subsp. andicola (Hook.) Snogerup | Accepted |  | IOPI |  | 
	
		| Juncus balticus subsp. ater (Rydb.) Snogerup | Accepted |  | IOPI |  | 
	
		| Juncus balticus subsp. balticus | Synonym |  | IOPI |  | 
	
		| Juncus balticus var. balticus | Synonym |  | TRO |  | 
	
		| Juncus balticus subsp. cantabricus (T.E.Díaz, Fern.-Carv. & Fern.Prieto) Snogerup | Accepted |  | IOPI |  | 
	
		| Juncus balticus var. columnaris Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus balticus var. condensatus Suksd. | Synonym |  | IOPI |  | 
	
		| Juncus balticus f. contractus Neuman | Synonym |  | IOPI |  | 
	
		| Juncus balticus var. crassiculmis Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus balticus f. dissitiflorus Engelm. ex Fernald & Wiegand | Synonym |  | IOPI |  | 
	
		| Juncus balticus var. durangensis Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus balticus var. eremicus Jeps. | Synonym |  | IOPI |  | 
	
		| Juncus balticus var. europaeus Engelm. [Invalid] | Synonym |  | IOPI |  | 
	
		| Juncus balticus f. flavidior Lepage | Synonym |  | IOPI |  | 
	
		| Juncus balticus var. haenkei (E.Mey.) Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus balticus var. inundatus (Drejer) Fr. | Synonym |  | IOPI |  | 
	
		| Juncus balticus subsp. inundatus (Drejer) Nyman | Synonym |  | IOPI |  | 
	
		| Juncus balticus subsp. inundatus Á. Löve & D. Löve | Synonym |  | TRO |  | 
	
		| Juncus balticus var. japonicus Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus balticus f. laxior Neuman | Synonym |  | IOPI |  | 
	
		| Juncus balticus var. laxus Hook. | Synonym |  | IOPI |  | 
	
		| Juncus balticus var. lesueurii Gelert | Synonym |  | IOPI |  | 
	
		| Juncus balticus subsp. littoralis (Engelm.) Snogerup | Accepted |  | IOPI |  | 
	
		| Juncus balticus var. littoralis Engelm. | Synonym |  | IOPI |  | 
	
		| Juncus balticus var. melanogenus Fernald & Wiegand | Synonym |  | IOPI |  | 
	
		| Juncus balticus subsp. mexicanus (Willd. ex Schult. & Schult.f.) Snogerup | Accepted |  | IOPI |  | 
	
		| Juncus balticus var. mexicanus (Willd. ex Schult. & Schult.f.) Kuntze | Synonym |  | IOPI |  | 
	
		| Juncus balticus f. mexicanus (Willd. ex Schult. & Schult.f.) Parish | Synonym |  | IOPI |  | 
	
		| Juncus balticus var. montanus Engelm. | Synonym |  | IOPI |  | 
	
		| Juncus balticus f. opulentus Lepage | Synonym |  | IOPI |  | 
	
		| Juncus balticus subsp. pacificus Engelm. | Synonym |  | IOPI |  | 
	
		| Juncus balticus var. pictus (F.Phil.) Grisebach | Synonym |  | IOPI |  | 
	
		| Juncus balticus f. pusillus (Fr.) Neuman | Synonym |  | IOPI |  | 
	
		| Juncus balticus subsp. pyrenaeus (Timb.-Lagr. & Jeanb.) P.Fourn. | Accepted |  | IOPI |  | 
	
		| Juncus balticus subsp. sitchensis (Engelm.) Hultén | Synonym |  | IOPI |  | 
	
		| Juncus balticus var. stenocarpus Fernald & Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus balticus var. tenuis H.Linb. | Synonym |  | IOPI |  | 
	
		| Juncus balticus var. vallicola Rydb. | Synonym |  | IOPI |  | 
	
		| Juncus balticus subsp. vallicola (Rydb.) Lint | Synonym |  | TRO |  | 
	
		| Juncus bassianus L.A.S.Johnson | Accepted |  | IOPI |  | 
	
		| Juncus benghalensis Kunth | Accepted |  | IOPI |  | 
	
		| Juncus benghalensis var. kyongnoslae Chhetri, Hynn. & A.A.Ansari | Synonym |  | IOPI |  | 
	
		| Juncus beringensis Buchenau | Accepted |  | IOPI |  | 
	
		| Juncus bhutanensis Satake | Synonym |  | IOPI |  | 
	
		| Juncus bicephalus Viv. | Synonym |  | IOPI |  | 
	
		| Juncus bicornis Michx. | Synonym |  | IOPI |  | 
	
		| Juncus bicornis var. williamsii (Fernald) Vict. | Synonym |  | IOPI |  | 
	
		| Juncus biflorus Elliott | Accepted |  | IOPI |  | 
	
		| Juncus biflorus f. adinus Fernald & Griscom | Synonym |  | IOPI |  | 
	
		| Juncus biflorus f. biflorus | Synonym |  | TRO |  | 
	
		| Juncus bifolius Hoppe [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus biglumis L. | Accepted |  | IOPI |  | 
	
		| Juncus biglumis var. ajonskensis Novikov | Synonym |  | IOPI |  | 
	
		| Juncus biglumoides H.Hara | Accepted |  | IOPI |  | 
	
		| Juncus bilineatus Gand. | Synonym |  | IOPI |  | 
	
		| Juncus biluoshanensis K.F.Wu | Synonym |  | IOPI |  | 
	
		| Juncus bogotensis Kunth | Synonym |  | IOPI |  | 
	
		| Juncus bogotensis var. compactus (Hoppe ex Mert. & W.D.J.Koch) Farw. | Synonym |  | IOPI |  | 
	
		| Juncus bogotensis var. solutus (Fernald & Wiegand) Farw. | Synonym |  | IOPI |  | 
	
		| Juncus bolanderi Engelm. | Accepted |  | IOPI |  | 
	
		| Juncus bolanderi var. riparius Jeps. | Synonym |  | IOPI |  | 
	
		| Juncus bombonzanensis Satake | Synonym |  | IOPI |  | 
	
		| Juncus bottnicus Wahlenb. | Synonym |  | IOPI |  | 
	
		| Juncus brachyanthus (Trab.) T.Durand & B.D.Jacks. [Invalid] | Synonym |  | IOPI |  | 
	
		| Juncus brachycarpus Engelm. | Accepted |  | IOPI |  | 
	
		| Juncus brachycephalus (Engelm.) Buchenau | Accepted |  | IOPI |  | 
	
		| Juncus brachycephalus f. brachycephalus | Synonym |  | TRO |  | 
	
		| Juncus brachycephalus f. hexandrus R.F.Martin | Synonym |  | IOPI |  | 
	
		| Juncus brachyphyllus Wiegand | Accepted |  | IOPI |  | 
	
		| Juncus brachyspathus Maxim. | Accepted |  | IOPI |  | 
	
		| Juncus brachyspathus var. curvatus (Buchenau) Satake | Synonym |  | IOPI |  | 
	
		| Juncus brachyspathus var. magadanicus Novikov | Synonym |  | IOPI |  | 
	
		| Juncus brachystigma Sam. | Accepted |  | IOPI |  | 
	
		| Juncus brachystylus (Engelm.) Piper | Synonym |  | IOPI |  | 
	
		| Juncus brachystylus var. uniflorus (Engelm.) M.Peck | Synonym |  | IOPI |  | 
	
		| Juncus brachytepalus Trautv. ex V.I.Krecz. & Gontsch. | Synonym |  | IOPI |  | 
	
		| Juncus bracteatus Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus bracteosus Kit. ex Kanitz | Synonym |  | IOPI |  | 
	
		| Juncus brasiliensis Breistr. | Accepted |  | IOPI |  | 
	
		| Juncus brevibracteus L.A.S.Johnson | Accepted |  | IOPI |  | 
	
		| Juncus brevicaudatus (Engelm.) Fernald | Accepted |  | IOPI |  | 
	
		| Juncus breviculmis Balslev | Accepted |  | IOPI |  | 
	
		| Juncus brevifolius Kirk [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus brevifolius Liebm. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus brevifolius Link ex Rostk. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus brevifolius var. mexicanus Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus brevifolius var. quitensis Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus brevirostris Nees [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus brevistilus Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus breweri Engelm. | Accepted |  | IOPI |  | 
	
		| Juncus broteroi Steud. | Synonym |  | IOPI |  | 
	
		| Juncus brownii F.Muell. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus × brueggeri Domin | Accepted |  | IOPI |  | 
	
		| Juncus brunnescens Rydb. | Synonym |  | IOPI |  | 
	
		| Juncus brunneus Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus bryoides F.J.Herm. | Accepted |  | IOPI |  | 
	
		| Juncus bryophilus W.W.Sm. | Accepted |  | IOPI |  | 
	
		| Juncus buchenaui Sved. | Synonym |  | IOPI |  | 
	
		| Juncus × buchenaui Dörfl. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus buckleyi Engelm. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus bufonius L. | Accepted |  | IOPI |  | 
	
		| Juncus bufonius var. alpinus Schur | Synonym |  | IOPI |  | 
	
		| Juncus bufonius f. alpinus (Schur) I.Grint. | Synonym |  | IOPI |  | 
	
		| Juncus bufonius subsp. ambiguus (Guss.) Schinz & Thell. | Synonym |  | IOPI |  | 
	
		| Juncus bufonius var. ambiguus (Guss.) Husn. | Synonym |  | IOPI |  | 
	
		| Juncus bufonius var. amuricus Maxim. | Synonym |  | IOPI |  | 
	
		| Juncus bufonius f. bracteatus Pamp. | Synonym |  | IOPI |  | 
	
		| Juncus bufonius var. bufonius | Synonym |  | TRO |  | 
	
		| Juncus bufonius f. bufonius | Synonym |  | TRO |  | 
	
		| Juncus bufonius var. capillaris Rchb. | Synonym |  | IOPI |  | 
	
		| Juncus bufonius var. compactus Celak. | Synonym |  | IOPI |  | 
	
		| Juncus bufonius var. condensatus Cout. | Synonym |  | IOPI |  | 
	
		| Juncus bufonius var. congdonii (S.Watson) J.T.Howell | Synonym |  | IOPI |  | 
	
		| Juncus bufonius var. congestus Wahlenb. | Synonym |  | IOPI |  | 
	
		| Juncus bufonius f. divaricatus Racib. | Synonym |  | IOPI |  | 
	
		| Juncus bufonius var. dolichophyllus Zapal. | Synonym |  | IOPI |  | 
	
		| Juncus bufonius var. fasciculatus W.D.J.Koch | Synonym |  | IOPI |  | 
	
		| Juncus bufonius var. fasciculiflorus Boiss. | Synonym |  | IOPI |  | 
	
		| Juncus bufonius f. filiformis Klinge | Synonym |  | IOPI |  | 
	
		| Juncus bufonius var. filiformis Lojac. | Synonym |  | IOPI |  | 
	
		| Juncus bufonius subsp. foliosus (Desf.) Arcang. | Synonym |  | IOPI |  | 
	
		| Juncus bufonius f. giganteus (Asch. & Graebn.) Nyár. | Synonym |  | IOPI |  | 
	
		| Juncus bufonius var. gracilis St.-Amans | Synonym |  | IOPI |  | 
	
		| Juncus bufonius var. gramineus Lojac. | Synonym |  | IOPI |  | 
	
		| Juncus bufonius var. grandiflorus Schult. & Schult.f. | Synonym |  | IOPI |  | 
	
		| Juncus bufonius var. halophilus Buchenau & Fernald | Synonym |  | IOPI |  | 
	
		| Juncus bufonius subsp. hybridus (Brot.) Arcang. | Synonym |  | IOPI |  | 
	
		| Juncus bufonius var. hybridus (Brot.) Farw. | Synonym |  | IOPI |  | 
	
		| Juncus bufonius subsp. hybridus (Brot.) Mateo & Figuerola | Synonym |  | TRO |  | 
	
		| Juncus bufonius var. hybridus (Brot.) Husn. | Synonym |  | TRO |  | 
	
		| Juncus bufonius subsp. insulanus (Viv.) Briq. ex Jahand. & Maire | Synonym |  | IOPI |  | 
	
		| Juncus bufonius var. jadarensis Bryhn | Synonym |  | IOPI |  | 
	
		| Juncus bufonius subsp. juzepczukii (V.I.Krecz. & Gontsch.) Sóo | Synonym |  | IOPI |  | 
	
		| Juncus bufonius var. juzepczukii (V.I.Krecz. & Gontsch.) Vorosch. | Synonym |  | IOPI |  | 
	
		| Juncus bufonius var. kochii Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus bufonius var. laxus Celak. | Synonym |  | IOPI |  | 
	
		| Juncus bufonius var. major Boiss. | Synonym |  | IOPI |  | 
	
		| Juncus bufonius f. minutulus Albert & Jahand. | Synonym |  | IOPI |  | 
	
		| Juncus bufonius subsp. mogadorensis H.Lindb. | Synonym |  | IOPI |  | 
	
		| Juncus bufonius var. mogadorensis (H.Lindb.) Maire & Weiller | Synonym |  | IOPI |  | 
	
		| Juncus bufonius f. mutabilis Neuman | Synonym |  | IOPI |  | 
	
		| Juncus bufonius subsp. mutabilis (Neuman) H.Lindb. | Synonym |  | IOPI |  | 
	
		| Juncus bufonius subsp. nastanthus (V.I.Krecz. & Gontsch.) Sóo | Synonym |  | IOPI |  | 
	
		| Juncus bufonius subsp. nastanthus Soó | Synonym |  | TRO |  | 
	
		| Juncus bufonius var. occidentalis F.J.Herm. | Synonym |  | IOPI |  | 
	
		| Juncus bufonius var. parvulus Hartm. | Synonym |  | IOPI |  | 
	
		| Juncus bufonius var. procerior Roth | Synonym |  | IOPI |  | 
	
		| Juncus bufonius var. pumilio Griseb. | Synonym |  | IOPI |  | 
	
		| Juncus bufonius subsp. ranarius (Songeon & E.P.Perrier) Hiitonen | Synonym |  | IOPI |  | 
	
		| Juncus bufonius var. ranarius (Songeon & E.P.Perrier) Farw. | Synonym |  | IOPI |  | 
	
		| Juncus bufonius var. rechingeri (Snogerup) Jafri | Synonym |  | IOPI |  | 
	
		| Juncus bufonius var. rhiphaenus (Pau & Font-Quer) Maire & Weiller | Synonym |  | IOPI |  | 
	
		| Juncus bufonius f. scoparius (Asch. & Graebn.) Nyár. | Synonym |  | IOPI |  | 
	
		| Juncus bufonius var. sorrentinii (Parl.) Husn. | Synonym |  | IOPI |  | 
	
		| Juncus bufonius var. subauriculatus Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus bufonius var. suffocatus Lojac. | Synonym |  | IOPI |  | 
	
		| Juncus bufonius var. susianus Nábelek | Synonym |  | IOPI |  | 
	
		| Juncus bufonius var. tuberiferus Krylov | Synonym |  | IOPI |  | 
	
		| Juncus bufonius subsp. turkestanicus (V.I.Krecz. & Gontsch.) Sóo | Synonym |  | IOPI |  | 
	
		| Juncus bufonius subsp. turkestanicus Soó | Synonym |  | TRO |  | 
	
		| Juncus bufonius var. typicus Husn. | Synonym |  | IOPI |  | 
	
		| Juncus bufonum Bubani [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus bulbosus L. | Accepted |  | IOPI |  | 
	
		| Juncus bulbosus var. acutiflorus Regel | Synonym |  | IOPI |  | 
	
		| Juncus bulbosus var. alpinus Schur | Synonym |  | IOPI |  | 
	
		| Juncus bulbosus var. atrofuscus (Rupr.) Regel | Synonym |  | IOPI |  | 
	
		| Juncus bulbosus var. compressus (Jacq.) Regel | Synonym |  | IOPI |  | 
	
		| Juncus bulbosus f. fluitans (Lam.) F.Navarro, J.Sánchez & C.J.Valle | Synonym |  | IOPI |  | 
	
		| Juncus bulbosus var. fluitans (Lam.) Beck | Synonym |  | IOPI |  | 
	
		| Juncus bulbosus f. geniculatus (Asch. & Graebn.) Sóo | Synonym |  | IOPI |  | 
	
		| Juncus bulbosus var. gerardii (Loisel.) A.Gray | Synonym |  | IOPI |  | 
	
		| Juncus bulbosus subsp. kochii (F.W.Schultz) Reichg. | Synonym |  | IOPI |  | 
	
		| Juncus bulbosus var. lychnocarpus Wallr. | Synonym |  | IOPI |  | 
	
		| Juncus bulbosus var. maroccanus Font Quer | Synonym |  | IOPI |  | 
	
		| Juncus bulbosus f. maroccanus (Font Quer) Maire | Synonym |  | IOPI |  | 
	
		| Juncus bulbosus f. nanus (Peterm.) Sóo | Synonym |  | IOPI |  | 
	
		| Juncus bulbosus var. nigricans Regel & Herder | Synonym |  | IOPI |  | 
	
		| Juncus bulbosus var. phaeocarpus Wallr. | Synonym |  | IOPI |  | 
	
		| Juncus bulbosus f. pygmaeus (T.Marsson) Fern.-Carv. & F.Navarro | Synonym |  | IOPI |  | 
	
		| Juncus bulbosus var. salinus Schur | Synonym |  | IOPI |  | 
	
		| Juncus bulbosus var. salsuginosus (Turcz. ex C.A.Mey.) Regel | Synonym |  | IOPI |  | 
	
		| Juncus bulbosus var. soranthus (Schrenk) Regel | Synonym |  | IOPI |  | 
	
		| Juncus bulbosus f. submersus (Glück) Sóo | Synonym |  | IOPI |  | 
	
		| Juncus bulbosus f. submucronatus Proćków | Synonym |  | IOPI |  | 
	
		| Juncus bulbosus var. uliginosus (Roth) Beck | Synonym |  | IOPI |  | 
	
		| Juncus bulbosus f. uliginosus (Roth) Fern.-Carv. | Synonym |  | IOPI |  | 
	
		| Juncus bulbosus f. welwitschii (Hochst. ex Steud.) Sóo | Synonym |  | IOPI |  | 
	
		| Juncus burkartii Barros | Accepted |  | IOPI |  | 
	
		| Juncus caesariensis Coville | Accepted |  | IOPI |  | 
	
		| Juncus caespiticius E.Mey. | Accepted |  | IOPI |  | 
	
		| Juncus caespiticius var. bracteatus Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus caffer Bertol. | Synonym |  | IOPI |  | 
	
		| Juncus campestris L. | Synonym |  | IOPI |  | 
	
		| Juncus campestris var. lapponicus Retz. | Synonym |  | IOPI |  | 
	
		| Juncus campestris var. multiflorus Ehrh. | Synonym |  | IOPI |  | 
	
		| Juncus campestris var. nivalis (Laest.) Sommerf. | Synonym |  | IOPI |  | 
	
		| Juncus campestris var. strictus Retz. | Synonym |  | IOPI |  | 
	
		| Juncus campestris var. tenuis Retz. | Synonym |  | IOPI |  | 
	
		| Juncus camptotropus V.I.Krecz. | Synonym |  | IOPI |  | 
	
		| Juncus canadensis J.Gay ex Laharpe | Accepted |  | IOPI |  | 
	
		| Juncus canadensis f. apertus Fernald | Synonym |  | IOPI |  | 
	
		| Juncus canadensis var. brachycephalus Engelm. | Synonym |  | IOPI |  | 
	
		| Juncus canadensis var. brevicaudatus Engelm. | Synonym |  | IOPI |  | 
	
		| Juncus canadensis var. canadensis | Synonym |  | TRO |  | 
	
		| Juncus canadensis f. canadensis | Synonym |  | TRO |  | 
	
		| Juncus canadensis var. coarctatus Engelm. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus canadensis f. conglobatus Fernald | Synonym |  | IOPI |  | 
	
		| Juncus canadensis var. euroauster Fernald | Synonym |  | IOPI |  | 
	
		| Juncus canadensis var. kuntzei Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus canadensis var. longicaudatus Engelm. | Synonym |  | IOPI |  | 
	
		| Juncus canadensis var. paradoxus Farw. | Synonym |  | IOPI |  | 
	
		| Juncus canadensis var. sparsiflorus Fernald | Synonym |  | IOPI |  | 
	
		| Juncus canadensis var. subcaudatus Engelm. | Synonym |  | IOPI |  | 
	
		| Juncus canaliculatus Liebm. | Synonym |  | IOPI |  | 
	
		| Juncus canaliculatus Engelm. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus canariensis Willd. ex E.Mey. | Synonym |  | IOPI |  | 
	
		| Juncus cantabricus T.E.Díaz, Fern.-Carv. & Fern.Prieto | Synonym |  | IOPI |  | 
	
		| Juncus capensis Thunb. | Accepted |  | IOPI |  | 
	
		| Juncus capensis var. angustifolius E.Mey. | Synonym |  | IOPI |  | 
	
		| Juncus capensis subsp. angustifolius (E.Mey.) Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus capensis subsp. delicatulus (Steud.) Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus capensis var. delicatulus (Steud.) Adamson | Synonym |  | IOPI |  | 
	
		| Juncus capensis f. depauperatus Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus capensis var. flaccidus (Steud.) Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus capensis f. frondescens Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus capensis subsp. geniculatus Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus capensis var. gracilior Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus capensis var. latifolius E.Mey. | Synonym |  | IOPI |  | 
	
		| Juncus capensis subsp. longifolius Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus capensis var. macranthus Adamson | Synonym |  | IOPI |  | 
	
		| Juncus capensis var. minimus Laharpe | Synonym |  | IOPI |  | 
	
		| Juncus capensis subsp. parviflorus Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus capensis var. sphagnetorum Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus capensis var. strictissimus Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus capillaceus Lam. | Accepted |  | IOPI |  | 
	
		| Juncus capillaceus Hook.f. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus capillaceus var. chilensis Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus capillaceus var. montevidensis Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus capillaris F.J.Herm. | Accepted |  | IOPI |  | 
	
		| Juncus capitatus Weigel | Accepted |  | IOPI |  | 
	
		| Juncus capitatus var. congestus Ten. | Synonym |  | IOPI |  | 
	
		| Juncus capitatus f. physcomitrioides (Baen.) Neuman | Synonym |  | IOPI |  | 
	
		| Juncus capitatus var. physcomitrioides Baen. | Synonym |  | IOPI |  | 
	
		| Juncus capitatus subsp. setaceus K.Richt. | Synonym |  | IOPI |  | 
	
		| Juncus capitatus var. setaceus Nyman | Synonym |  | IOPI |  | 
	
		| Juncus capitatus var. triandrus Asch. | Synonym |  | IOPI |  | 
	
		| Juncus capitatus f. umbelliformis Merino | Synonym |  | IOPI |  | 
	
		| Juncus caricinus Durieu | Synonym |  | IOPI |  | 
	
		| Juncus carpaticus Simonk. | Synonym |  | IOPI |  | 
	
		| Juncus carpaticus f. minor Zapal. | Synonym |  | IOPI |  | 
	
		| Juncus castaneus Sm. | Accepted |  | IOPI |  | 
	
		| Juncus castaneus Clairv. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus castaneus subsp. castaneus | Synonym |  | IOPI |  | 
	
		| Juncus castaneus var. castaneus | Synonym |  | TRO |  | 
	
		| Juncus castaneus var. czetzii (Schur) Nyman | Synonym |  | IOPI |  | 
	
		| Juncus castaneus var. koreanus Ohwi | Synonym |  | IOPI |  | 
	
		| Juncus castaneus subsp. leucochlamys (V.J.Zinger ex V.I.Krecz.) Hultén | Accepted |  | IOPI |  | 
	
		| Juncus castaneus var. pallidus Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus castaneus f. pallidus (Buchenau) B.Boivin | Synonym |  | IOPI |  | 
	
		| Juncus castaneus var. pallidus B. Boivin | Synonym |  | TRO |  | 
	
		| Juncus castaneus subsp. triceps (Rostk.) Novikov | Accepted |  | IOPI |  | 
	
		| Juncus castelli Tineo | Synonym |  | IOPI |  | 
	
		| Juncus caudatus Chapm. | Synonym |  | IOPI |  | 
	
		| Juncus cephalostigma Sam. | Accepted |  | IOPI |  | 
	
		| Juncus cephalostigma var. cephalostigma | Synonym |  | TRO |  | 
	
		| Juncus cephalostigma var. dingjieensis K.F.Wu | Synonym |  | IOPI |  | 
	
		| Juncus cephalotes Thunb. | Accepted |  | IOPI |  | 
	
		| Juncus cephalotes var. minimus Hochst. | Synonym |  | IOPI |  | 
	
		| Juncus cephalotes var. ustulatus Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus cephalotes var. varius Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus cespifolius Raf. | Synonym |  | IOPI |  | 
	
		| Juncus chamissonis Kunth | Synonym |  | IOPI |  | 
	
		| Juncus chamissonis f. pusillus Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus chiapasensis Balslev | Accepted |  | IOPI |  | 
	
		| Juncus chilensis Gay | Synonym |  | IOPI |  | 
	
		| Juncus chlorocephalus Engelm. | Accepted |  | IOPI |  | 
	
		| Juncus chloroticus Schult. & Schult.f. | Synonym |  | IOPI |  | 
	
		| Juncus chrysocarpus Buchenau | Accepted |  | IOPI |  | 
	
		| Juncus clarkei Buchenau | Accepted |  | IOPI |  | 
	
		| Juncus clarkei var. clarkei | Synonym |  | TRO |  | 
	
		| Juncus clarkei var. marginatus A.Camus | Synonym |  | IOPI |  | 
	
		| Juncus clausonis Trab. | Synonym |  | IOPI |  | 
	
		| Juncus coarctatus Willd. ex Spreng. [Invalid] | Synonym |  | IOPI |  | 
	
		| Juncus coarctatus (Engelm.) Buchenau [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus coenosus Bicheno | Synonym |  | IOPI |  | 
	
		| Juncus cognatus Kunth | Synonym |  | IOPI |  | 
	
		| Juncus collinus Steud. | Synonym |  | IOPI |  | 
	
		| Juncus columbianus Coville | Synonym |  | IOPI |  | 
	
		| Juncus commixtus Steud. | Synonym |  | IOPI |  | 
	
		| Juncus communis E.Mey. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus communis var. conglomeratus (L.) E.Mey. | Synonym |  | IOPI |  | 
	
		| Juncus communis var. effusus (L.) E.Mey. | Synonym |  | IOPI |  | 
	
		| Juncus communis var. parviflorus Rouy | Synonym |  | IOPI |  | 
	
		| Juncus commutatus Steud. | Synonym |  | IOPI |  | 
	
		| Juncus complanatus Schult. & Schult.f. | Synonym |  | IOPI |  | 
	
		| Juncus compressus Jacq. | Accepted |  | IOPI |  | 
	
		| Juncus compressus Kunth [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus compressus f. alpinus (Schur) Sóo | Synonym |  | IOPI |  | 
	
		| Juncus compressus var. coarctatus E.Mey. ex Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus compressus var. dianthelus K.Koch | Synonym |  | IOPI |  | 
	
		| Juncus compressus subsp. elatior (Lange) Nyman | Synonym |  | IOPI |  | 
	
		| Juncus compressus var. ellipsoideus Neilr. | Synonym |  | IOPI |  | 
	
		| Juncus compressus f. elongatus Asch. & Graebn. | Synonym |  | IOPI |  | 
	
		| Juncus compressus var. euxinus Velen. | Synonym |  | IOPI |  | 
	
		| Juncus compressus f. euxinus (Velen.) Hayek | Synonym |  | IOPI |  | 
	
		| Juncus compressus subsp. gerardii (Loisel.) Hartm. | Synonym |  | IOPI |  | 
	
		| Juncus compressus var. gracillimus Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus compressus var. haenkei (E.Mey.) Laharpe | Synonym |  | IOPI |  | 
	
		| Juncus compressus subsp. jaxarticus (V.I.Krecz. & Gontsch.) Jafri | Synonym |  | IOPI |  | 
	
		| Juncus compressus f. laxus (Asch. & Graebn.) Borza | Synonym |  | IOPI |  | 
	
		| Juncus compressus f. longirepens Zapal. | Synonym |  | IOPI |  | 
	
		| Juncus compressus var. nudiculmis F.W.Schultz | Synonym |  | IOPI |  | 
	
		| Juncus compressus var. pseudogerardii Jafri | Synonym |  | IOPI |  | 
	
		| Juncus compressus var. subcompressus (Zakirov & Novopokr.) Novikov | Synonym |  | IOPI |  | 
	
		| Juncus compressus var. subtriflorus E.Mey. | Synonym |  | IOPI |  | 
	
		| Juncus compressus f. tenuifolius Zapal. | Synonym |  | IOPI |  | 
	
		| Juncus conceptionis Steud. | Synonym |  | IOPI |  | 
	
		| Juncus concinnus D.Don | Accepted |  | IOPI |  | 
	
		| Juncus concinnus var. concinnus | Synonym |  | TRO |  | 
	
		| Juncus concinnus var. gracilicaulis (A. Camus) R.C. Srivast. | Synonym |  | TRO |  | 
	
		| Juncus concinnus var. turbidus Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus concolor Sam. | Accepted |  | IOPI |  | 
	
		| Juncus confervaceus St.-Lag. | Synonym |  | IOPI |  | 
	
		| Juncus confusus Coville | Accepted |  | IOPI |  | 
	
		| Juncus congdonii S.Watson | Synonym |  | IOPI |  | 
	
		| Juncus congestus Thuill. | Synonym |  | IOPI |  | 
	
		| Juncus congestus S. Watson | Synonym |  | TRO |  | 
	
		| Juncus conglomeratus L. | Accepted |  | IOPI |  | 
	
		| Juncus conglomeratus var. effusus (L.) Kostel. | Synonym |  | IOPI |  | 
	
		| Juncus conglomeratus var. laxus (Beck) I.Grint. | Synonym |  | IOPI |  | 
	
		| Juncus conglomeratus subsp. subuliflorus (Drejer) Nyman | Synonym |  | IOPI |  | 
	
		| Juncus conglomeratus var. umbrosus (Asch. & Graebn.) I.Grint. | Synonym |  | IOPI |  | 
	
		| Juncus conradii Tuck. | Synonym |  | IOPI |  | 
	
		| Juncus consanguineus Ziz | Synonym |  | IOPI |  | 
	
		| Juncus continuus L.A.S.Johnson | Accepted |  | IOPI |  | 
	
		| Juncus convolutus Raf. | Unresolved |  | IOPI |  | 
	
		| Juncus cooperi Engelm. | Accepted |  | IOPI |  | 
	
		| Juncus cordobensis Barros | Accepted |  | IOPI |  | 
	
		| Juncus coriaceus Mack. | Accepted |  | IOPI |  | 
	
		| Juncus corralensis Phil. | Synonym |  | IOPI |  | 
	
		| Juncus × correctus Steud. | Accepted |  | IOPI |  | 
	
		| Juncus covillei Piper | Accepted |  | IOPI |  | 
	
		| Juncus covillei var. covillei | Synonym |  | IOPI |  | 
	
		| Juncus covillei var. obtusatus C.L.Hitchc. | Accepted |  | IOPI |  | 
	
		| Juncus crassiculmis (Buchenau) Herter | Synonym |  | IOPI |  | 
	
		| Juncus crassifolius Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus crassifolius var. fascinatus (M.C.Johnst.) Waterf. | Synonym |  | IOPI |  | 
	
		| Juncus crassistylus A.Camus | Accepted |  | IOPI |  | 
	
		| Juncus creticus Raf. | Synonym |  | IOPI |  | 
	
		| Juncus cupreus H.Lév. & Vaniot | Synonym |  | IOPI |  | 
	
		| Juncus curtisiae L.A.S.Johnson | Accepted |  | IOPI |  | 
	
		| Juncus curvatus Buchenau | Accepted |  | IOPI |  | 
	
		| Juncus cylindricus M.A.Curtis | Synonym |  | IOPI |  | 
	
		| Juncus cymosus Lam. | Synonym |  | IOPI |  | 
	
		| Juncus cyperoides Laharpe | Accepted |  | IOPI |  | 
	
		| Juncus cyprius H.Linb. | Synonym |  | IOPI |  | 
	
		| Juncus czetzii Schur | Synonym |  | IOPI |  | 
	
		| Juncus deangelisii Bertol. [Invalid] | Synonym |  | IOPI |  | 
	
		| Juncus debilis A.Gray | Accepted |  | IOPI |  | 
	
		| Juncus decipiens (Buchenau) Nakai | Accepted |  | IOPI |  | 
	
		| Juncus decipiens subsp. decipiens | Synonym |  | IOPI |  | 
	
		| Juncus decipiens var. glomeratus (Makino) Satake | Synonym |  | IOPI |  | 
	
		| Juncus decipiens var. gracilis Nakai | Synonym |  | IOPI |  | 
	
		| Juncus decipiens var. robustior Satake | Synonym |  | IOPI |  | 
	
		| Juncus decipiens f. spiralis (Makino) Satake | Synonym |  | IOPI |  | 
	
		| Juncus decipiens subsp. sundaicus (Ridl.) L.A.S.Johnson & K.L.Wilson | Accepted |  | IOPI |  | 
	
		| Juncus decipiens f. utilis (Makino) Satake | Synonym |  | IOPI |  | 
	
		| Juncus × degenianus Boros | Accepted |  | IOPI |  | 
	
		| Juncus delicatulus Steud. | Synonym |  | IOPI |  | 
	
		| Juncus demissus Steud. | Synonym |  | IOPI |  | 
	
		| Juncus densiflorus Kunth | Accepted |  | IOPI |  | 
	
		| Juncus densiflorus var. cyperinus Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus densiflorus var. pohlii (Steud.) Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus deosaicus Noltie | Accepted |  | IOPI |  | 
	
		| Juncus depauperatus Ten. | Synonym |  | IOPI |  | 
	
		| Juncus depauperatus Phil. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus deserticola F.Phil. | Synonym |  | IOPI |  | 
	
		| Juncus diaphanus Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus diaphragmarius Brot. | Synonym |  | IOPI |  | 
	
		| Juncus diastrophanthus Buchenau | Accepted |  | IOPI |  | 
	
		| Juncus dichotomus Elliott | Accepted |  | IOPI |  | 
	
		| Juncus dichotomus var. platyphyllus Wiegand | Synonym |  | IOPI |  | 
	
		| Juncus diemii Barros | Accepted |  | IOPI |  | 
	
		| Juncus diffusissimus Buckley | Accepted |  | IOPI |  | 
	
		| Juncus × diffusus Hoppe | Accepted |  | IOPI |  | 
	
		| Juncus diffusus Wiegand | Unresolved |  | TRO |  | 
	
		| Juncus diganthus Phil. | Unresolved |  | TRO |  | 
	
		| Juncus digeneus Borbás | Synonym |  | IOPI |  | 
	
		| Juncus digitatus C.W.Witham & Zika | Accepted |  | IOPI |  | 
	
		| Juncus dinteri Poelln. | Synonym |  | IOPI |  | 
	
		| Juncus dioicus Steud. | Synonym |  | IOPI |  | 
	
		| Juncus distegus Edgar | Accepted |  | IOPI |  | 
	
		| Juncus divaricatus Gilib. [Invalid] | Synonym |  | IOPI |  | 
	
		| Juncus divaricatus Wolff | Synonym |  | IOPI |  | 
	
		| Juncus divergens Koch [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus dolichanthus L.A.S.Johnson | Accepted |  | IOPI |  | 
	
		| Juncus dombeyanus J.Gay ex Laharpe | Synonym |  | IOPI |  | 
	
		| Juncus dombeyanus var. achalensis (Barros) Novara | Synonym |  | IOPI |  | 
	
		| Juncus dombeyanus var. elatus Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus dombeyanus var. pycnanthus Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus dongchuanensis K.F.Wu | Accepted |  | IOPI |  | 
	
		| Juncus × donyanae Fern.-Carv. | Accepted |  | IOPI |  | 
	
		| Juncus dregeanus Kunth | Accepted |  | IOPI |  | 
	
		| Juncus dregeanus subsp. bachitii (Hochst. ex Steud.) Hedberg | Accepted |  | IOPI |  | 
	
		| Juncus dregeanus var. conglomeratus Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus dregeanus subsp. dregeanus | Synonym |  | IOPI |  | 
	
		| Juncus dregeanus var. longistylus Adamson | Synonym |  | IOPI |  | 
	
		| Juncus dregeanus var. sphaerocephalus Adamson | Synonym |  | IOPI |  | 
	
		| Juncus dregeanus var. submonocephalus (Steud.) Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus drummondii E.Mey. | Accepted |  | IOPI |  | 
	
		| Juncus drummondii f. davisonii H.St.John | Synonym |  | IOPI |  | 
	
		| Juncus drummondii var. drummondii | Synonym |  | TRO |  | 
	
		| Juncus drummondii var. humilis Engelm. | Synonym |  | IOPI |  | 
	
		| Juncus drummondii var. longifructus H.St.John | Synonym |  | IOPI |  | 
	
		| Juncus drummondii var. parryi (Engelm.) M.E.Jones | Synonym |  | IOPI |  | 
	
		| Juncus drummondii var. subtriflorus (E.Mey.) C.L.Hitchc. | Synonym |  | IOPI |  | 
	
		| Juncus dubius Engelm. | Accepted |  | IOPI |  | 
	
		| Juncus dubius f. rugulosus (Engelm.) Hoover | Synonym |  | IOPI |  | 
	
		| Juncus dudleyi Wiegand | Accepted |  | IOPI |  | 
	
		| Juncus dulongjiongensis Novikov | Accepted |  | IOPI |  | 
	
		| Juncus duranii Ewan | Synonym |  | IOPI |  | 
	
		| Juncus durus L.A.S.Johnson & K.L.Wilson | Accepted |  | IOPI |  | 
	
		| Juncus duthiei (C.B.Clarke) Noltie | Accepted |  | IOPI |  | 
	
		| Juncus duvalii Loret | Synonym |  | IOPI |  | 
	
		| Juncus ebracteatus E.Mey. | Accepted |  | IOPI |  | 
	
		| Juncus echinatus Muhl. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus echinatus Elliott [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus echinocephalus Balslev | Accepted |  | IOPI |  | 
	
		| Juncus echinuloides Brot. | Synonym |  | IOPI |  | 
	
		| Juncus ecuadoriensis Balslev | Accepted |  | IOPI |  | 
	
		| Juncus edgariae L.A.S.Johnson & K.L.Wilson | Accepted |  | IOPI |  | 
	
		| Juncus effusus L. | Accepted |  | IOPI |  | 
	
		| Juncus effusus var. aemulans (Liebm.) Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus effusus var. brunneus Engelm. | Synonym |  | IOPI |  | 
	
		| Juncus effusus var. caeruleomontanus H.St.John | Synonym |  | IOPI |  | 
	
		| Juncus effusus var. canariensis (Willd. ex E.Mey.) Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus effusus var. compactus (Hoppe ex Mert. & W.D.J.Koch) Lej. & Courtois | Synonym |  | IOPI |  | 
	
		| Juncus effusus var. conglomeratus (L.) Bosch | Synonym |  | IOPI |  | 
	
		| Juncus effusus f. conglomeratus (L.) Reichg. | Synonym |  | IOPI |  | 
	
		| Juncus effusus subsp. conglomeratus (L.) Husn. | Synonym |  | IOPI |  | 
	
		| Juncus effusus var. conglomeratus (L.) Engelm. | Synonym |  | TRO |  | 
	
		| Juncus effusus f. conglomeratus (L.) Reichgelt | Synonym |  | TRO |  | 
	
		| Juncus effusus var. costulatus Fernald | Synonym |  | IOPI |  | 
	
		| Juncus effusus var. dasyanthelus K.Koch | Synonym |  | IOPI |  | 
	
		| Juncus effusus subsp. decipiens (Buchenau) Weim. | Synonym |  | IOPI |  | 
	
		| Juncus effusus var. decipiens Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus effusus subsp. effusus | Synonym |  | IOPI |  | 
	
		| Juncus effusus var. effusus | Synonym |  | TRO |  | 
	
		| Juncus effusus var. elatus (Asch. & Graebn.) I.Grint. | Synonym |  | IOPI |  | 
	
		| Juncus effusus var. exiguus Fernald & Wiegand | Synonym |  | IOPI |  | 
	
		| Juncus effusus subsp. fistulosus (Guss.) K.Richt. | Synonym |  | IOPI |  | 
	
		| Juncus effusus var. fistulosus (Guss.) Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus effusus f. glomeratus Makino | Synonym |  | IOPI |  | 
	
		| Juncus effusus var. gracilis Hook. | Synonym |  | IOPI |  | 
	
		| Juncus effusus f. gracilis Buchenau ex Matsum. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus effusus subsp. hesperius Piper | Synonym |  | IOPI |  | 
	
		| Juncus effusus subsp. laxus (Robyns & Tournay) Snogerup | Accepted |  | IOPI |  | 
	
		| Juncus effusus var. longibracteatus A.Fern. & R.Fern. | Synonym |  | IOPI |  | 
	
		| Juncus effusus var. macranthelus K.Koch | Synonym |  | IOPI |  | 
	
		| Juncus effusus subsp. pacificus (Fernald & Wiegand) Piper & Beattie | Accepted |  | IOPI |  | 
	
		| Juncus effusus var. pacificus Fernald & Wiegand | Synonym |  | IOPI |  | 
	
		| Juncus effusus var. pauciflorus Lej. & Courtois | Synonym |  | IOPI |  | 
	
		| Juncus effusus var. prolifer Sond. | Synonym |  | IOPI |  | 
	
		| Juncus effusus f. prolifer (Sond.) Hegi | Synonym |  | IOPI |  | 
	
		| Juncus effusus var. pylaei (Laharpe) Fernald & Wiegand | Synonym |  | IOPI |  | 
	
		| Juncus effusus subsp. solutus (Fernald & Wiegand) Hämet-Ahti | Accepted |  | IOPI |  | 
	
		| Juncus effusus var. solutus Fernald & Wiegand | Synonym |  | IOPI |  | 
	
		| Juncus effusus f. spiralis Makino | Synonym |  | IOPI |  | 
	
		| Juncus effusus var. subglomeratus DC. | Synonym |  | IOPI |  | 
	
		| Juncus effusus var. subglomeratus Lam. & DC. | Synonym |  | TRO |  | 
	
		| Juncus effusus f. utilis Makino | Synonym |  | IOPI |  | 
	
		| Juncus effusus f. zebrinus (André) Hegi | Synonym |  | IOPI |  | 
	
		| Juncus elatior Lange | Synonym |  | IOPI |  | 
	
		| Juncus elatus Steud. | Synonym |  | IOPI |  | 
	
		| Juncus elbrusicus Galushko | Accepted |  | IOPI |  | 
	
		| Juncus elegans Royle ex Sam. | Synonym |  | IOPI |  | 
	
		| Juncus elliottii Chapm. | Accepted |  | IOPI |  | 
	
		| Juncus elliottii var. polyanthemus C.Mohr | Synonym |  | IOPI |  | 
	
		| Juncus ellmanii C.E.Hubb., Sandwith & Turrill | Synonym |  | IOPI |  | 
	
		| Juncus emmanuelis A.Fern. & J.G.García | Accepted |  | IOPI |  | 
	
		| Juncus emmanuelis var. inflatifolius A.Fern. & J.G.García | Synonym |  | IOPI |  | 
	
		| Juncus engelmannii Buchenau [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus engleri Buchenau | Accepted |  | IOPI |  | 
	
		| Juncus ensifolius Wikstr. | Accepted |  | IOPI |  | 
	
		| Juncus ensifolius var. brunnescens (Rydb.) Cronquist | Synonym |  | TRO |  | 
	
		| Juncus ensifolius var. ensifolius | Synonym |  | TRO |  | 
	
		| Juncus ensifolius var. major E.Mey. | Synonym |  | IOPI |  | 
	
		| Juncus ensifolius var. minor E.Mey. | Synonym |  | IOPI |  | 
	
		| Juncus ensifolius var. montanus (Engelm.) C.L.Hitchc. | Synonym |  | IOPI |  | 
	
		| Juncus ensiformis Wikstr. | Unresolved |  | TRO |  | 
	
		| Juncus epimetrocarpus Gontsch. | Synonym |  | IOPI |  | 
	
		| Juncus equisetinus Proskur. | Accepted |  | IOPI |  | 
	
		| Juncus equisetosus Dumort. | Synonym |  | IOPI |  | 
	
		| Juncus erecticulmis G.H.Loos | Synonym |  | IOPI |  | 
	
		| Juncus erectus Besser [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus erectus Pers. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus ericetorum Pollich | Synonym |  | IOPI |  | 
	
		| Juncus ernesti-barrosi Barros | Accepted |  | IOPI |  | 
	
		| Juncus erythropodus V.I.Krecz. | Synonym |  | IOPI |  | 
	
		| Juncus exaltatus Decne. | Synonym |  | IOPI |  | 
	
		| Juncus exaltatus var. capensis Kunth | Synonym |  | IOPI |  | 
	
		| Juncus exiguus (Fernald & Wiegand) Lint ex Snogerup & P.F.Zika | Accepted |  | IOPI |  | 
	
		| Juncus exilis Osterh. | Synonym |  | IOPI |  | 
	
		| Juncus exploratorum E.H.Walker | Synonym |  | IOPI |  | 
	
		| Juncus exsertus Buchenau | Accepted |  | IOPI |  | 
	
		| Juncus exsertus subsp. lesuticus Burtt | Synonym |  | IOPI |  | 
	
		| Juncus falcatus E.Mey. | Accepted |  | IOPI |  | 
	
		| Juncus falcatus var. alaskensis Coville | Synonym |  | IOPI |  | 
	
		| Juncus falcatus subsp. falcatus | Synonym |  | IOPI |  | 
	
		| Juncus falcatus var. falcatus | Synonym |  | TRO |  | 
	
		| Juncus falcatus var. paniculatus Engelm. | Synonym |  | IOPI |  | 
	
		| Juncus falcatus var. prominens Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus falcatus subsp. prominens (Buchenau) Novikov | Synonym |  | TRO |  | 
	
		| Juncus falcatus subsp. sitchensis (Buchenau) Hultén | Accepted |  | IOPI |  | 
	
		| Juncus falcatus var. sitchensis Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus × fallax Trab. | Accepted |  | IOPI |  | 
	
		| Juncus fasciatus Lojac. | Synonym |  | IOPI |  | 
	
		| Juncus fasciculatus Bertol. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus fasciculatus Schrank [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus fasciculatus Schousb. ex E.Mey. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus fasciculiflorus Adamson | Synonym |  | IOPI |  | 
	
		| Juncus fauriei Lév. & Vaniot | Accepted |  | IOPI |  | 
	
		| Juncus fauriensis Buchenau | Accepted |  | IOPI |  | 
	
		| Juncus fauriensis subsp. fauriensis | Synonym |  | IOPI |  | 
	
		| Juncus fauriensis var. iwatensis Satake | Synonym |  | IOPI |  | 
	
		| Juncus fauriensis subsp. kamschatcensis (Buchenau) Novikov | Accepted |  | IOPI |  | 
	
		| Juncus fauriensis var. kamschatcensis Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus fernandezianus Steud. | Synonym |  | IOPI |  | 
	
		| Juncus filicaulis Buchenau | Accepted |  | IOPI |  | 
	
		| Juncus filifolius Adamson | Synonym |  | IOPI |  | 
	
		| Juncus filiformis L. | Accepted |  | IOPI |  | 
	
		| Juncus filiformis var. brachyspathus (Maxim.) Regel | Synonym |  | IOPI |  | 
	
		| Juncus filiformis var. curvatus (Buchenau) R.R.Kudo | Synonym |  | IOPI |  | 
	
		| Juncus filiformis f. flaccidus Borza & Nyár. | Synonym |  | IOPI |  | 
	
		| Juncus filiformis var. kulczynskii Racib. | Synonym |  | IOPI |  | 
	
		| Juncus filiformis var. pluriflorus Krylov | Synonym |  | IOPI |  | 
	
		| Juncus filiformis f. prostratus Freiberg | Synonym |  | IOPI |  | 
	
		| Juncus filiformis var. pusillus Fr. | Synonym |  | IOPI |  | 
	
		| Juncus filiformis var. transsilvanicus (Schur) Nyman | Synonym |  | IOPI |  | 
	
		| Juncus filipendulus Buckley | Accepted |  | IOPI |  | 
	
		| Juncus fimbristyloides Noltie | Accepted |  | IOPI |  | 
	
		| Juncus firmus L.A.S.Johnson | Accepted |  | IOPI |  | 
	
		| Juncus fischerianus Turcz. ex V.I.Krecz. | Synonym |  | IOPI |  | 
	
		| Juncus fistulosus Guss. | Synonym |  | IOPI |  | 
	
		| Juncus flaccidus Steud. | Synonym |  | IOPI |  | 
	
		| Juncus flavescens Host | Synonym |  | IOPI |  | 
	
		| Juncus flavidus L.A.S.Johnson | Accepted |  | IOPI |  | 
	
		| Juncus flexilis Turcz. | Unresolved |  | IOPI |  | 
	
		| Juncus floribundus Kunth | Synonym |  | IOPI |  | 
	
		| Juncus floribundus Phil. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus floridanus Rafin. | Synonym |  | IOPI |  | 
	
		| Juncus fluitans Lam. | Synonym |  | IOPI |  | 
	
		| Juncus fockei Buchenau | Accepted |  | IOPI |  | 
	
		| Juncus foliosus Desf. | Accepted |  | IOPI |  | 
	
		| Juncus foliosus Hoppe [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus fominii Zoz | Accepted |  | IOPI |  | 
	
		| Juncus fontanesii J.Gay ex Laharpe | Accepted |  | IOPI |  | 
	
		| Juncus fontanesii subsp. brachyanthus Trab. | Accepted |  | IOPI |  | 
	
		| Juncus fontanesii var. distortus Lojac. | Synonym |  | IOPI |  | 
	
		| Juncus fontanesii subsp. fontanesii | Synonym |  | IOPI |  | 
	
		| Juncus fontanesii subsp. kotschyi (Boiss.) Snogerup | Accepted |  | IOPI |  | 
	
		| Juncus fontanesii var. kotschyi (Boiss.) Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus fontanesii var. lagenarius (J.Gay ex Laharpe) Nyman | Synonym |  | IOPI |  | 
	
		| Juncus fontanesii var. melanocephalus Trab. | Synonym |  | IOPI |  | 
	
		| Juncus fontanesii subsp. pyramidatus (Laharpe) Snogerup | Accepted |  | IOPI |  | 
	
		| Juncus fontanesii var. pyramidatus (Laharpe) Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus forsteri Sm. | Synonym |  | IOPI |  | 
	
		| Juncus fraternus Kunth | Synonym |  | IOPI |  | 
	
		| Juncus × frisicus Dörfl. | Synonym |  | IOPI |  | 
	
		| Juncus fucensis H.St.John | Synonym |  | IOPI |  | 
	
		| Juncus fugongensis S.Y.Bao | Accepted |  | IOPI |  | 
	
		| Juncus × fulvescens Fernald | Accepted |  | IOPI |  | 
	
		| Juncus fuscatus Raf. | Unresolved |  | IOPI |  | 
	
		| Juncus fuscoater Schreb. | Synonym |  | IOPI |  | 
	
		| Juncus fuscoater subsp. arthrophyllus Brenner | Synonym |  | IOPI |  | 
	
		| Juncus fuscoater var. microcarpus Brenner | Synonym |  | IOPI |  | 
	
		| Juncus fuscoater var. minor Spenn. | Synonym |  | IOPI |  | 
	
		| Juncus fuscoater f. subatricapillus Neuman | Synonym |  | IOPI |  | 
	
		| Juncus fuscocapitatus Balslev | Synonym |  | IOPI |  | 
	
		| Juncus ganeshii Miyam. & H.Ohba | Accepted |  | IOPI |  | 
	
		| Juncus gayanus Steud. | Synonym |  | IOPI |  | 
	
		| Juncus geniculatus Schrank | Synonym |  | IOPI |  | 
	
		| Juncus gentilis N.E.Br. | Synonym |  | IOPI |  | 
	
		| Juncus georgianus Coville | Accepted |  | IOPI |  | 
	
		| Juncus gerardii Loisel. | Accepted |  | IOPI |  | 
	
		| Juncus gerardii var. acutiflorus (Regel) Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus gerardii subsp. atrofuscus (Rupr.) Printz | Accepted |  | IOPI |  | 
	
		| Juncus gerardii var. atrofuscus (Rupr.) Trautv. | Synonym |  | IOPI |  | 
	
		| Juncus gerardii var. attenuatus (Viv.) Nyman | Synonym |  | IOPI |  | 
	
		| Juncus gerardii var. cristoflei Litard. & Maire | Synonym |  | IOPI |  | 
	
		| Juncus gerardii subsp. gerardii | Synonym |  | IOPI |  | 
	
		| Juncus gerardii var. gerardii | Synonym |  | TRO |  | 
	
		| Juncus gerardii subsp. libanoticus (J.Thiébaut) Snogerup | Synonym |  | IOPI |  | 
	
		| Juncus gerardii subsp. microcarpus A. Tarass. | Synonym |  | TRO |  | 
	
		| Juncus gerardii subsp. montanus Snogerup | Accepted |  | IOPI |  | 
	
		| Juncus gerardii var. pedicellatus Fernald | Synonym |  | IOPI |  | 
	
		| Juncus gerardii subsp. persicus (Boiss.) Snogerup | Synonym |  | IOPI |  | 
	
		| Juncus gerardii subsp. salsuginosus (Turcz. ex C.A.Mey.) Printz | Synonym |  | IOPI |  | 
	
		| Juncus gerardii var. salsuginosus (Turcz. ex C.A.Mey.) Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus gerardii var. soranthus (Schrenk) Trautv. | Synonym |  | IOPI |  | 
	
		| Juncus gerardii subsp. soranthus (Schrenk) K.Richt. | Synonym |  | IOPI |  | 
	
		| Juncus gerardii subsp. soranthus Snogerup | Synonym |  | TRO |  | 
	
		| Juncus gerardii var. sparsiflorus H.Mort. ex Lange | Synonym |  | IOPI |  | 
	
		| Juncus gerardii var. ubsunuricus Novikov | Synonym |  | IOPI |  | 
	
		| Juncus gerardii subsp. vvedenskii (V.I.Krecz.) Novikov | Synonym |  | IOPI |  | 
	
		| Juncus germanorum Steud. | Synonym |  | IOPI |  | 
	
		| Juncus gesneri Sm. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus gibraltaricus Salzm. ex Boiss. [Invalid] | Synonym |  | IOPI |  | 
	
		| Juncus giganteus Sam. | Accepted |  | IOPI |  | 
	
		| Juncus glabratus Hoppe | Synonym |  | IOPI |  | 
	
		| Juncus glaucescens Laharpe | Synonym |  | IOPI |  | 
	
		| Juncus glaucoturgidus Noltie | Accepted |  | IOPI |  | 
	
		| Juncus glaucus Sibth. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus glaucus Ehrh. ex P.Gaertn., B.Mey. & Scherb. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus glaucus var. acutissimus Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus glaucus subsp. angelisii (Ten.) Arcang. | Synonym |  | IOPI |  | 
	
		| Juncus glaucus subsp. depauperatus (Ten.) K.Richt. | Synonym |  | IOPI |  | 
	
		| Juncus glaucus subsp. diffusus (Hoppe) Bonnier & Layens | Synonym |  | IOPI |  | 
	
		| Juncus glaucus var. equisetosus (Dumort.) Nyman | Synonym |  | IOPI |  | 
	
		| Juncus glaucus var. fasciculatus Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus glaucus var. laxiflorus Lange | Synonym |  | IOPI |  | 
	
		| Juncus glaucus var. leptocarpus (Buchenau) Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus glaucus var. littoralis Wahlenb. | Synonym |  | IOPI |  | 
	
		| Juncus glaucus var. longicornis (Bastard) Grognot | Synonym |  | IOPI |  | 
	
		| Juncus glaucus subsp. longicornis (Bastard) K.Richt. | Synonym |  | IOPI |  | 
	
		| Juncus glaucus f. macrocarpus Zapal. | Synonym |  | IOPI |  | 
	
		| Juncus glaucus var. pallidus Sond. | Synonym |  | IOPI |  | 
	
		| Juncus glaucus var. paniculatus (Hoppe ex Schult. & Schult.f.) Bosch | Synonym |  | IOPI |  | 
	
		| Juncus glaucus subsp. paniculatus (Hoppe ex Schult. & Schult.f.) Trab. | Synonym |  | IOPI |  | 
	
		| Juncus glaucus var. strictus Spenn. | Synonym |  | IOPI |  | 
	
		| Juncus glaucus var. subglomeratus G.Mey. | Synonym |  | IOPI |  | 
	
		| Juncus glaucus f. virescens Neuman | Synonym |  | IOPI |  | 
	
		| Juncus glaucus var. yokoscensis Franch. & Sav. | Synonym |  | IOPI |  | 
	
		| Juncus globiceps Bajtenov | Synonym |  | IOPI |  | 
	
		| Juncus glomeratus Thunb. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus glomeratus K.F.Wu [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus gonggae Miyam. & H.Ohba | Accepted |  | IOPI |  | 
	
		| Juncus gontscharovii Schischk. | Synonym |  | IOPI |  | 
	
		| Juncus × gracilescens F.J.Herm. ex Wadmond | Accepted |  | IOPI |  | 
	
		| Juncus gracilicaulis A.Camus | Accepted |  | IOPI |  | 
	
		| Juncus gracilis Sm. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus gracilis R.Br. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus gracilis (Hook.f.) Walp. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus gracilis Lej. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus gracilis Roth | Synonym |  | IOPI |  | 
	
		| Juncus gracilis var. capitatus Roth | Synonym |  | IOPI |  | 
	
		| Juncus gracilis var. humilis Benth. | Synonym |  | IOPI |  | 
	
		| Juncus gracillimus (Buchenau) V.I.Krecz. & Gontsch. | Accepted |  | IOPI |  | 
	
		| Juncus graecus Chaub. & Bory | Synonym |  | IOPI |  | 
	
		| Juncus gramineus Dumort. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus graminifolius E.Mey. | Synonym |  | IOPI |  | 
	
		| Juncus grandiflorus L.f. | Synonym |  | IOPI |  | 
	
		| Juncus greenei Oakes & Tuck. | Accepted |  | IOPI |  | 
	
		| Juncus greenei var. vaseyi (Engelm.) B.Boivin | Synonym |  | IOPI |  | 
	
		| Juncus gregiflorus L.A.S.Johnson | Accepted |  | IOPI |  | 
	
		| Juncus griscomii Fernald | Synonym |  | IOPI |  | 
	
		| Juncus grisebachii Buchenau | Accepted |  | IOPI |  | 
	
		| Juncus grubovii Novikov | Synonym |  | IOPI |  | 
	
		| Juncus guadeloupensis Buchenau & Urb. | Accepted |  | IOPI |  | 
	
		| Juncus gubanovii Novikov | Accepted |  | IOPI |  | 
	
		| Juncus gunnii Hook.f. | Synonym |  | IOPI |  | 
	
		| Juncus gussonei Parl. | Synonym |  | IOPI |  | 
	
		| Juncus gymnocarpus Coville | Accepted |  | IOPI |  | 
	
		| Juncus haenkei E.Mey. | Accepted |  | IOPI |  | 
	
		| Juncus hallii Engelm. | Accepted |  | IOPI |  | 
	
		| Juncus hancockii Hance | Synonym |  | IOPI |  | 
	
		| Juncus harae Miyam. & H.Ohba | Accepted |  | IOPI |  | 
	
		| Juncus haussknechtii Ruhmer | Synonym |  | IOPI |  | 
	
		| Juncus × haussknechtii P.Fourn. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus heldreichianus T.Marsson ex Parl. | Accepted |  | IOPI |  | 
	
		| Juncus heldreichianus auct. | Synonym |  | TRO |  | 
	
		| Juncus heldreichianus subsp. heldreichianus | Synonym |  | IOPI |  | 
	
		| Juncus heldreichianus subsp. orientalis Snogerup | Accepted |  | IOPI |  | 
	
		| Juncus heldreichianus var. orientalis Novikov | Synonym |  | TRO |  | 
	
		| Juncus helodes Link [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus hemiendytus F.J.Herm. | Accepted |  | IOPI |  | 
	
		| Juncus hemiendytus var. abjectus (F.J.Herm.) Ertter | Accepted |  | IOPI |  | 
	
		| Juncus hemiendytus var. hemiendytus | Synonym |  | IOPI |  | 
	
		| Juncus heptopotamicus V.I.Krecz. & Gontsch. | Accepted |  | IOPI |  | 
	
		| Juncus heptopotamicus var. heptopotamicus | Synonym |  | TRO |  | 
	
		| Juncus heptopotamicus var. yiningensis K.F.Wu | Synonym |  | IOPI |  | 
	
		| Juncus hesperius (Piper) Lint | Accepted |  | IOPI |  | 
	
		| Juncus heteranthos Nutt. | Synonym |  | IOPI |  | 
	
		| Juncus heterophyllus Dufour | Accepted |  | IOPI |  | 
	
		| Juncus himalensis Klotzsch | Accepted |  | IOPI |  | 
	
		| Juncus himalensis var. schlagintweitii (Buchenau) Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus hizenensis Satake | Synonym |  | IOPI |  | 
	
		| Juncus hochstetteri Steud. | Synonym |  | IOPI |  | 
	
		| Juncus hoffmeisteri Klotzsch | Synonym |  | IOPI |  | 
	
		| Juncus holoschoenus R.Br. | Accepted |  | IOPI |  | 
	
		| Juncus holoschoenus var. multiflorus Carse | Synonym |  | IOPI |  | 
	
		| Juncus homalocaulis F.Muell. ex Benth. | Accepted |  | IOPI |  | 
	
		| Juncus homalophyllus Steud. | Synonym |  | IOPI |  | 
	
		| Juncus hoodii Boottin Hook | Unresolved |  | TRO |  | 
	
		| Juncus hookerianus Steud. | Unresolved |  | TRO |  | 
	
		| Juncus hookeridis Steud. | Synonym |  | IOPI |  | 
	
		| Juncus hostii Tausch [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus howellii F.J.Herm. | Accepted |  | IOPI |  | 
	
		| Juncus husnotii (Rouy) Prain | Synonym |  | IOPI |  | 
	
		| Juncus hybridus Brot. | Accepted |  | IOPI |  | 
	
		| Juncus hybridus subsp. nastanthus (V.I.Krecz. & Gontsch.) Novikov | Synonym |  | IOPI |  | 
	
		| Juncus hybridus var. nastanthus Novikov | Synonym |  | TRO |  | 
	
		| Juncus hydrophilus Noltie | Accepted |  | IOPI |  | 
	
		| Juncus hylanderi (Hämet-Ahti) Tzvelev & Glazkova | Synonym |  | IOPI |  | 
	
		| Juncus imbricatus Laharpe | Accepted |  | IOPI |  | 
	
		| Juncus imbricatus var. chamissonis (Kunth) Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus imbricatus var. lechleri (Steud.) Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus inaequalis Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus inaequalis var. altus (Buchenau) Adamson | Synonym |  | IOPI |  | 
	
		| Juncus inaequalis var. squarrosus Adamson | Synonym |  | IOPI |  | 
	
		| Juncus inaequalis var. viridescens Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus inconspicuus d'Urv. | Synonym |  | IOPI |  | 
	
		| Juncus indescriptus Steud. | Synonym |  | IOPI |  | 
	
		| Juncus indicus Royle ex D.Don | Synonym |  | IOPI |  | 
	
		| Juncus indicus var. nanus Royle ex D.Don | Synonym |  | IOPI |  | 
	
		| Juncus inflexus L. | Accepted |  | IOPI |  | 
	
		| Juncus inflexus f. aggregatus (Asch. & Graebn.) I.Grint. | Synonym |  | IOPI |  | 
	
		| Juncus inflexus subsp. austrooccidentalis K.F.Wu | Synonym |  | IOPI |  | 
	
		| Juncus inflexus subsp. brachytepalus (Trautv. ex V.I.Krecz. & Gontsch.) Novikov | Accepted |  | IOPI |  | 
	
		| Juncus inflexus var. brachytepalus (Trautv. ex V.I.Krecz. & Gontsch.) Kitam. | Synonym |  | IOPI |  | 
	
		| Juncus inflexus var. depauperatus (Ten.) I.Grint. | Synonym |  | IOPI |  | 
	
		| Juncus inflexus f. equisetosus (Dumort.) Sóo | Synonym |  | IOPI |  | 
	
		| Juncus inflexus subsp. inflexus | Synonym |  | IOPI |  | 
	
		| Juncus inflexus var. leptocarpus (Buchenau) Zhi Y. Zhang | Synonym |  | TRO |  | 
	
		| Juncus inflexus var. longicornis (Bastard) Briq. | Synonym |  | IOPI |  | 
	
		| Juncus inflexus f. melanocarpus (G.Mey.) I.Grint. | Synonym |  | IOPI |  | 
	
		| Juncus inflexus var. oligocarpus (Asch. & Graebn.) I.Grint. | Synonym |  | IOPI |  | 
	
		| Juncus inflexus f. pallidus (Sond.) I.Grint. | Synonym |  | IOPI |  | 
	
		| Juncus inflexus f. strictus Sóo | Synonym |  | IOPI |  | 
	
		| Juncus inflexus var. trimenii Cout. | Synonym |  | IOPI |  | 
	
		| Juncus ingens N.A.Wakef. | Accepted |  | IOPI |  | 
	
		| Juncus insulanus Viv. | Synonym |  | IOPI |  | 
	
		| Juncus interior Wiegand | Accepted |  | IOPI |  | 
	
		| Juncus interior var. arizonicus (Wiegand) F.J.Herm. | Synonym |  | IOPI |  | 
	
		| Juncus interior var. billingtonii Farw. | Synonym |  | IOPI |  | 
	
		| Juncus interior var. neomexicanus (Wiegand) F.J.Herm. | Synonym |  | IOPI |  | 
	
		| Juncus interior var. uniflorus Farw. | Synonym |  | IOPI |  | 
	
		| Juncus intermedius Host [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus intermedius Thuill. | Synonym |  | IOPI |  | 
	
		| Juncus × inundatus Drejer | Accepted |  | IOPI |  | 
	
		| Juncus inventus L.F.Hend. | Synonym |  | IOPI |  | 
	
		| Juncus involucratus Steud. ex Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus involucratus Kirk [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus isolepoides Nees | Unresolved |  | TRO |  | 
	
		| Juncus isthmiacus Neck. | Synonym |  | IOPI |  | 
	
		| Juncus istriacus Gand. | Synonym |  | IOPI |  | 
	
		| Juncus jacquinii L. | Accepted |  | IOPI |  | 
	
		| Juncus jacquinii var. biceps Beck | Synonym |  | IOPI |  | 
	
		| Juncus jaxarticus V.I.Krecz. & Gontsch. | Accepted |  | IOPI |  | 
	
		| Juncus jeholensis Satake | Synonym |  | IOPI |  | 
	
		| Juncus jinpingensis S.Y.Bao | Accepted |  | IOPI |  | 
	
		| Juncus jonesii Rydb. | Synonym |  | IOPI |  | 
	
		| Juncus juzepczukii V.I.Krecz. & Gontsch. | Synonym |  | IOPI |  | 
	
		| Juncus kamschatcensis (Buchenau) Kudô | Synonym |  | IOPI |  | 
	
		| Juncus kangdingensis K.F.Wu | Synonym |  | IOPI |  | 
	
		| Juncus kangpuensis K.F.Wu | Synonym |  | IOPI |  | 
	
		| Juncus kansanus F.J.Herm. | Synonym |  | IOPI |  | 
	
		| Juncus karelinii Steud. | Synonym |  | IOPI |  | 
	
		| Juncus kelloggii Engelm. | Accepted |  | IOPI |  | 
	
		| Juncus × kern-reichgeltii Jansen & Wacht. ex Reichg. | Synonym |  | IOPI |  | 
	
		| Juncus khasiensis Buchenau | Accepted |  | IOPI |  | 
	
		| Juncus kingii Rendle | Accepted |  | IOPI |  | 
	
		| Juncus kleinii Barros | Accepted |  | IOPI |  | 
	
		| Juncus kochii F.W.Schultz | Synonym |  | IOPI |  | 
	
		| Juncus koidzumii Satake | Synonym |  | IOPI |  | 
	
		| Juncus kotschyi Boiss. | Synonym |  | IOPI |  | 
	
		| Juncus kotschyi var. arianus (V.I.Krecz.) Novikov | Synonym |  | IOPI |  | 
	
		| Juncus krameri Franch. & Sav. | Accepted |  | IOPI |  | 
	
		| Juncus kraussii Hochst. | Accepted |  | IOPI |  | 
	
		| Juncus kraussii subsp. austerus (Buchenau) Snogerup | Accepted |  | IOPI |  | 
	
		| Juncus kraussii subsp. australiensis (Buchenau) Snogerup | Accepted |  | IOPI |  | 
	
		| Juncus kraussii var. effusus Adamson | Synonym |  | IOPI |  | 
	
		| Juncus kraussii subsp. kraussii | Synonym |  | IOPI |  | 
	
		| Juncus kraussii var. parviflorus Adamson | Synonym |  | IOPI |  | 
	
		| Juncus kuntzei (Buchenau) Vierh. | Synonym |  | IOPI |  | 
	
		| Juncus laccatus P.F.Zika | Accepted |  | IOPI |  | 
	
		| Juncus lacteus Link | Synonym |  | IOPI |  | 
	
		| Juncus laevis Wallr. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus laevis var. diffusus Wallr. | Synonym |  | IOPI |  | 
	
		| Juncus laeviusculus L.A.S.Johnson | Accepted |  | IOPI |  | 
	
		| Juncus laeviusculus subsp. laeviusculus | Synonym |  | IOPI |  | 
	
		| Juncus lagenarius J.Gay ex Laharpe | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus Ehrh. ex Hoffm. | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus var. acutiflorus (Ehrh. ex Hoffm.) Neilr. | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus f. acutipetalus Marcet | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus var. affinis (Gaudin) Gaudin | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus var. alpigenus Schur | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus var. alpinus Spenn. | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus f. brachycarpus Trab. | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus var. caespitosus Zapal. | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus var. corymbosus Neuman | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus var. cuspidatus Brenner | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus var. erectus Celak. | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus var. fluitans W.D.J.Koch | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus f. gracilis Montell | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus var. heterophyllus (Dufour) Duby | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus var. lindhardii Wiinst. | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus var. littoralis (Patze, E.Mey. & Elkan) Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus var. macrocarpus Döll | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus subsp. macrocephalus (Viv.) Rouy | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus var. macrocephalus (Viv.) Döll | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus f. maximus Erdner | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus var. microcephalus Peterm. | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus var. multiflorus Lange | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus f. nanus Neuman | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus f. natans Glück | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus f. nigrescens Zapal. | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus subsp. nigritellus (F.W.Schultz) Nyman | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus var. nigritellus (F.W.Schultz) Macreight | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus var. obtusiflorus Neilr. | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus var. pallidus Schur | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus f. parviflorus Racib. | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus var. parviflorus (Racib.) Zapal. | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus var. patens Ser. ex Gaudin | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus var. pauciflorus Sond. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus var. prolifer Parl. | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus var. pygmaeus Salis-Marschl. ex Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus subsp. repens (Sond.) Asch. & Graebn. | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus var. repens Sond. | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus var. salinus Schur | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus var. senescens Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus var. sphaerocephalus Nyman | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus var. stolonifer (Wohll.) Asch. & Graebn. | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus var. suberectus Spenn. | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus f. submersus Glück | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus var. subobtusus Neuman | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus var. turczaninowii Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus f. viridans Kneuck. | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus f. viridiflorus Zapal. [Invalid] | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus var. viviparus Schur | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus f. viviparus (Gaudin) Neuman | Synonym |  | IOPI |  | 
	
		| Juncus lampocarpus subsp. viviparus Gaudin | Synonym |  | IOPI |  | 
	
		| Juncus lancangensis Y.Y.Qian | Accepted |  | IOPI |  | 
	
		| Juncus × langii Erdner | Accepted |  | IOPI |  | 
	
		| Juncus lanpinguensis Novikov | Synonym |  | IOPI |  | 
	
		| Juncus lateriflorus Larrañaga | Unresolved |  | IOPI |  | 
	
		| Juncus latifolius Wulfen | Synonym |  | IOPI |  | 
	
		| Juncus latifolius (Engelm.) Buchenau [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus latifolius var. paniculatus (Engelm.) Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus latior Satake | Synonym |  | IOPI |  | 
	
		| Juncus latior var. viviparus Satake | Synonym |  | IOPI |  | 
	
		| Juncus laxus Robyns & Tournay | Synonym |  | IOPI |  | 
	
		| Juncus lechleri Steud. | Synonym |  | IOPI |  | 
	
		| Juncus leersii T.Marsson | Synonym |  | IOPI |  | 
	
		| Juncus leersii var. laxus Beck | Synonym |  | IOPI |  | 
	
		| Juncus leersii var. praeflorens Ade & Vollm. | Synonym |  | IOPI |  | 
	
		| Juncus leersii var. subuliflorus (Drejer) Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus leersii f. subuliflorus (Drejer) Neuman | Synonym |  | IOPI |  | 
	
		| Juncus leersii var. viridiflorus Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus leersii f. viridiflorus (Buchenau) Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus leiospermus F.J.Herm. | Accepted |  | IOPI |  | 
	
		| Juncus leiospermus var. leiospermus | Synonym |  | IOPI |  | 
	
		| Juncus × lemieuxii B.Boivin | Accepted |  | IOPI |  | 
	
		| Juncus leopoldii Parl. | Synonym |  | IOPI |  | 
	
		| Juncus leptocarpus Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus leptocaulis Torr. & A.Gray ex Engelm. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus leptocladus Hayata | Synonym |  | IOPI |  | 
	
		| Juncus leptospermus Buchenau | Accepted |  | IOPI |  | 
	
		| Juncus lesbiacus C.Candargy | Synonym |  | IOPI |  | 
	
		| Juncus leschenaultii Gay ex Laharpe | Synonym |  | IOPI |  | 
	
		| Juncus leschenaultii var. major Miq. | Synonym |  | IOPI |  | 
	
		| Juncus leschenaultii var. radicans Franch. & Sav. | Synonym |  | IOPI |  | 
	
		| Juncus leschenaultii var. unitubulosus (Buchenau) Novikov | Synonym |  | IOPI |  | 
	
		| Juncus lesueurii Bol. | Accepted |  | IOPI |  | 
	
		| Juncus lesueurii var. elatus S.Watson | Synonym |  | IOPI |  | 
	
		| Juncus lesueurii var. lesueurii | Synonym |  | TRO |  | 
	
		| Juncus lesueurii var. stenocaulon Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus lesueurii var. tracyi Jeps. | Synonym |  | IOPI |  | 
	
		| Juncus leucanthus Royle ex D.Don | Accepted |  | IOPI |  | 
	
		| Juncus leucanthus var. alpinus Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus leucochlamus Zing. ex V. Krecz. | Unresolved |  | TRO |  | 
	
		| Juncus leucochlamys V.J.Zinger ex V.I.Krecz. | Synonym |  | IOPI |  | 
	
		| Juncus leucochlamys subsp. borealis (Tolm.) Novikov | Synonym |  | IOPI |  | 
	
		| Juncus leucochlamys var. borealis Tolm. | Synonym |  | IOPI |  | 
	
		| Juncus leucomelas Royle ex D.Don | Accepted |  | IOPI |  | 
	
		| Juncus leucomelas var. thomsonii (Buchenau) Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus leucophobus Ehrh. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus libanoticus J.Thiébaut | Synonym |  | IOPI |  | 
	
		| Juncus liebmannii J.F.Macbr. | Accepted |  | IOPI |  | 
	
		| Juncus liebmannii var. liebmannii | Synonym |  | IOPI |  | 
	
		| Juncus liebmannii var. quitensis (Buchenau) Balslev | Accepted |  | IOPI |  | 
	
		| Juncus limosus Vorosch. | Synonym |  | IOPI |  | 
	
		| Juncus liniger With. | Synonym |  | IOPI |  | 
	
		| Juncus litorum Rydb. | Synonym |  | IOPI |  | 
	
		| Juncus littoralis C.A.Mey. | Accepted |  | IOPI |  | 
	
		| Juncus littoralis (Engelm.) Smyth & L.C.Smyth [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus littoralis subsp. tyraicus Novikov | Synonym |  | TRO |  | 
	
		| Juncus × livetianus H.Lév. | Synonym |  | IOPI |  | 
	
		| Juncus llanquihuensis Barros | Accepted |  | IOPI |  | 
	
		| Juncus lomatophyllus Spreng. | Accepted |  | IOPI |  | 
	
		| Juncus lomatophyllus var. aristatus Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus lomatophyllus var. congestus Adamson | Synonym |  | IOPI |  | 
	
		| Juncus lomatophyllus var. lutescens Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus longibracteatus A.M.Lu & Z.Y.Zhang | Synonym |  | IOPI |  | 
	
		| Juncus longicapsularis Chevall. | Synonym |  | IOPI |  | 
	
		| Juncus longicaudatus (Engelm.) Mack. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus longicornis Bastard | Synonym |  | IOPI |  | 
	
		| Juncus longiflorus (A.Camus) Noltie | Accepted |  | IOPI |  | 
	
		| Juncus longifolius Steud. | Synonym |  | IOPI |  | 
	
		| Juncus longii Fernald | Accepted |  | IOPI |  | 
	
		| Juncus longirostris Kuvaev | Accepted |  | IOPI |  | 
	
		| Juncus longistamineus A.Camus | Accepted |  | IOPI |  | 
	
		| Juncus longistylis Torr. | Accepted |  | IOPI |  | 
	
		| Juncus longistylis var. latifolius Engelm. | Synonym |  | IOPI |  | 
	
		| Juncus longistylis var. scabratus F.J.Herm. | Synonym |  | IOPI |  | 
	
		| Juncus loureiroana Schult. & Schult.f. | Synonym |  | IOPI |  | 
	
		| Juncus lucens Burnham | Synonym |  | IOPI |  | 
	
		| Juncus lucidus Hochst. | Synonym |  | IOPI |  | 
	
		| Juncus luciensis Ertter | Accepted |  | IOPI |  | 
	
		| Juncus luctuosus Sennen | Synonym |  | IOPI |  | 
	
		| Juncus luetkei Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus luteocarpus Satake | Synonym |  | IOPI |  | 
	
		| Juncus luteus All. | Synonym |  | IOPI |  | 
	
		| Juncus luxurians Colenso | Synonym |  | IOPI |  | 
	
		| Juncus luzula Krock. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus luzuliformis Franch. | Accepted |  | IOPI |  | 
	
		| Juncus luzuliformis var. modestus (Buchenau) Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus luzuliformis var. potaninii (Buchenau) Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus luzulinus Vill. | Synonym |  | IOPI |  | 
	
		| Juncus luzuloides Lam. | Synonym |  | IOPI |  | 
	
		| Juncus luzuloxiphium Griseb. | Synonym |  | IOPI |  | 
	
		| Juncus macedonicus Beauverd | Synonym |  | IOPI |  | 
	
		| Juncus macer Gray | Synonym |  | IOPI |  | 
	
		| Juncus macer var. anthelatus (Wiegand) Fernald | Synonym |  | IOPI |  | 
	
		| Juncus macer f. anthelatus (Wiegand) F.J.Herm. | Synonym |  | IOPI |  | 
	
		| Juncus macer f. discretiflorus F.J.Herm. | Synonym |  | IOPI |  | 
	
		| Juncus macer f. williamsii (Fernald) F.J.Herm. | Synonym |  | IOPI |  | 
	
		| Juncus macer var. williamsii (Fernald) Fernald | Synonym |  | IOPI |  | 
	
		| Juncus macrandrus Coville | Accepted |  | IOPI |  | 
	
		| Juncus macrantherus V.I.Krecz. & Gontsch. | Accepted |  | IOPI |  | 
	
		| Juncus macranthus Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus macrocarpus Nees | Synonym |  | TRO |  | 
	
		| Juncus macrocephalus Viv. | Synonym |  | IOPI |  | 
	
		| Juncus macrophyllus Coville | Accepted |  | IOPI |  | 
	
		| Juncus macrostemon J.Gay ex Laharpe | Synonym |  | IOPI |  | 
	
		| Juncus macrostigma Colenso | Synonym |  | IOPI |  | 
	
		| Juncus magellanicus Lam. | Synonym |  | IOPI |  | 
	
		| Juncus mairei H.Lév. | Synonym |  | IOPI |  | 
	
		| Juncus manasiensis K.F.Wu | Synonym |  | IOPI |  | 
	
		| Juncus mandonii Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus marginatus Rostk. | Accepted |  | IOPI |  | 
	
		| Juncus marginatus var. aristulatus (Michx.) Coville | Synonym |  | IOPI |  | 
	
		| Juncus marginatus var. biflorus (Elliott) Chapm. | Synonym |  | IOPI |  | 
	
		| Juncus marginatus var. biflorus (Elliott) Engelm. | Synonym |  | TRO |  | 
	
		| Juncus marginatus var. marginatus | Synonym |  | TRO |  | 
	
		| Juncus marginatus var. odoratus Torr. | Synonym |  | IOPI |  | 
	
		| Juncus marginatus var. paucicapitatus Engelm. | Synonym |  | IOPI |  | 
	
		| Juncus marginatus var. setosus Coville | Synonym |  | IOPI |  | 
	
		| Juncus maritimus Lam. | Accepted |  | IOPI |  | 
	
		| Juncus maritimus var. arabicus Asch. & Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus maritimus var. atlanticus J.W.White | Synonym |  | IOPI |  | 
	
		| Juncus maritimus var. australiensis Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus maritimus var. biancae Lojac. | Synonym |  | IOPI |  | 
	
		| Juncus maritimus var. congestus L.B.Hall | Synonym |  | IOPI |  | 
	
		| Juncus maritimus var. luxurians Lojac. | Synonym |  | IOPI |  | 
	
		| Juncus maritimus var. nervatus Lojac. | Synonym |  | IOPI |  | 
	
		| Juncus maritimus var. ponticus (Steven) Nyman | Synonym |  | IOPI |  | 
	
		| Juncus maritimus var. rigidus (Desf.) Rouy | Synonym |  | IOPI |  | 
	
		| Juncus maritimus subsp. rigidus (Desf.) Nyman | Synonym |  | IOPI |  | 
	
		| Juncus maritimus f. rigidus (Desf.) Maire & Weiller | Synonym |  | IOPI |  | 
	
		| Juncus maritimus var. socotranus Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus maroccanus Kirschner | Accepted |  | IOPI |  | 
	
		| Juncus marshallii Pugsley | Synonym |  | IOPI |  | 
	
		| Juncus matthioli Bubani [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus mauritanicus Trab. | Synonym |  | IOPI |  | 
	
		| Juncus mauritianus Bojer [Invalid] | Synonym |  | IOPI |  | 
	
		| Juncus maximowiczii Buchenau | Accepted |  | IOPI |  | 
	
		| Juncus maximowiczii f. rostratus Satake | Synonym |  | IOPI |  | 
	
		| Juncus maximus Reichard | Synonym |  | IOPI |  | 
	
		| Juncus maximus var. angustifolius Roth | Synonym |  | IOPI |  | 
	
		| Juncus megacephalus M.A.Curtis | Accepted |  | IOPI |  | 
	
		| Juncus megacephalus (Torr.) Alph.Wood [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus megakoleos Steud. | Synonym |  | IOPI |  | 
	
		| Juncus megalophyllus S.Y.Bao | Accepted |  | IOPI |  | 
	
		| Juncus megaspermus F.J.Herm. | Synonym |  | IOPI |  | 
	
		| Juncus meianthus L.A.S.Johnson ex K.L.Wilson | Accepted |  | IOPI |  | 
	
		| Juncus meiguensis K.F.Wu | Synonym |  | IOPI |  | 
	
		| Juncus melananthos Rchb. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus melanocarpus Michx. | Synonym |  | IOPI |  | 
	
		| Juncus melanocephalus Boiss. & Kotschy [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus melanocephalus Friv. | Synonym |  | IOPI |  | 
	
		| Juncus membranaceus Royle | Accepted |  | IOPI |  | 
	
		| Juncus mendocinus Barros | Synonym |  | IOPI |  | 
	
		| Juncus menziesii R.Br. ex Hook. | Synonym |  | IOPI |  | 
	
		| Juncus menziesii var. californicus Hook. & Arn. | Synonym |  | IOPI |  | 
	
		| Juncus meridionalis (Buchenau) Herter | Synonym |  | IOPI |  | 
	
		| Juncus mertensianus Bong. | Accepted |  | IOPI |  | 
	
		| Juncus mertensianus var. badius (Suksd.) F.J.Herm. | Synonym |  | IOPI |  | 
	
		| Juncus mertensianus var. columbianus (Coville) F.J.Herm. | Synonym |  | IOPI |  | 
	
		| Juncus mertensianus var. duranii (Ewan) F.J.Herm. | Synonym |  | IOPI |  | 
	
		| Juncus mertensianus var. filifolius Suksd. | Synonym |  | IOPI |  | 
	
		| Juncus mertensianus subsp. gracilis (Engelm.) F.J.Herm. | Synonym |  | IOPI |  | 
	
		| Juncus mertensianus subsp. mertensianus | Synonym |  | TRO |  | 
	
		| Juncus mertensianus var. paniculatus Engelm. | Synonym |  | IOPI |  | 
	
		| Juncus mertensianus var. suksdorfii (Rydb.) F.J.Herm. | Synonym |  | IOPI |  | 
	
		| Juncus metzleri F.W.Schultz | Synonym |  | IOPI |  | 
	
		| Juncus mexicanus Willd. ex Schult. & Schult.f. | Synonym |  | IOPI |  | 
	
		| Juncus micranthus Schrad. ex E.Mey. | Accepted |  | IOPI |  | 
	
		| Juncus × micranthus Desv. | Synonym |  | IOPI |  | 
	
		| Juncus microcephalus Kunth | Accepted |  | IOPI |  | 
	
		| Juncus microcephalus f. conglobatus Barros | Synonym |  | IOPI |  | 
	
		| Juncus microcephalus var. floribundus (Kunth) E.Mey. | Synonym |  | IOPI |  | 
	
		| Juncus microcephalus var. floribundus (Kunth) Kunth | Synonym |  | TRO |  | 
	
		| Juncus microcephalus var. intermedius E.Mey. ex Schult. & Schult.f. | Synonym |  | IOPI |  | 
	
		| Juncus microcephalus var. microcephalus | Synonym |  | TRO |  | 
	
		| Juncus microcephalus var. pusillus E.Mey. | Synonym |  | IOPI |  | 
	
		| Juncus microcephalus var. virens Griseb. | Synonym |  | IOPI |  | 
	
		| Juncus milashanensis A.M.Lu & Z.Y.Zhang | Accepted |  | IOPI |  | 
	
		| Juncus militaris Bigelow | Accepted |  | IOPI |  | 
	
		| Juncus militaris f. bifrons Fernald | Synonym |  | IOPI |  | 
	
		| Juncus militaris f. militaris | Synonym |  | TRO |  | 
	
		| Juncus militaris f. subnudus Fernald | Synonym |  | IOPI |  | 
	
		| Juncus minimus Buchenau | Accepted |  | IOPI |  | 
	
		| Juncus minutulus V.I.Krecz. & Gontsch. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus minutulus (Albert & Jahand.) Prain | Accepted |  | IOPI |  | 
	
		| Juncus miyiensis K.F. Wu | Accepted |  | TRO |  | 
	
		| Juncus modestus Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus modicus N.E.Br. | Accepted |  | IOPI |  | 
	
		| Juncus mogadorensis (H.Lindb.) A.W.Hill | Synonym |  | IOPI |  | 
	
		| Juncus mollifolius Hilliard & B.L.Burtt | Synonym |  | IOPI |  | 
	
		| Juncus mollis L.A.S.Johnson | Accepted |  | IOPI |  | 
	
		| Juncus monanthos Jacq. | Accepted |  | IOPI |  | 
	
		| Juncus monostichus Bartlett | Synonym |  | IOPI |  | 
	
		| Juncus montanus Lam. | Synonym |  | IOPI |  | 
	
		| Juncus × montellii Vierh. | Accepted |  | IOPI |  | 
	
		| Juncus monticola Steud. | Synonym |  | IOPI |  | 
	
		| Juncus × montserratensis Marcet | Accepted |  | IOPI |  | 
	
		| Juncus mucroniflorus Clairv. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus muehlenbergii Spreng. | Synonym |  | IOPI |  | 
	
		| Juncus muelleri Trautv. | Synonym |  | IOPI |  | 
	
		| Juncus muelleri subsp. grubovii (Novikov) Novikov | Synonym |  | IOPI |  | 
	
		| Juncus multibracteatus Tineo | Synonym |  | IOPI |  | 
	
		| Juncus multicapitatus Schult. & Schult.f. | Synonym |  | IOPI |  | 
	
		| Juncus multiceps Kunze | Synonym |  | IOPI |  | 
	
		| Juncus multiceps Kunze ex Kunth | Synonym |  | TRO |  | 
	
		| Juncus multiflorus Desf. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus multiflorus (Ehrh.) Hoffm. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus multiflorus Retz. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus multiflorus Ehrh. | Synonym |  | TRO |  | 
	
		| Juncus multiflorus var. siculus (Tineo) Nyman | Synonym |  | IOPI |  | 
	
		| Juncus × murbeckii Sagorski | Accepted |  | IOPI |  | 
	
		| Juncus mustangensis Miyam. & H.Ohba | Accepted |  | IOPI |  | 
	
		| Juncus mutabilis Savi [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus mutabilis Lam. | Synonym |  | IOPI |  | 
	
		| Juncus mutabilis subsp. ambiguus (Guss.) Nyman | Synonym |  | IOPI |  | 
	
		| Juncus mutabilis var. ranarius (Songeon & E.P.Perrier) Nyman | Synonym |  | IOPI |  | 
	
		| Juncus nanus Dubois | Synonym |  | IOPI |  | 
	
		| Juncus nastanthus V.I.Krecz. & Gontsch. | Synonym |  | IOPI |  | 
	
		| Juncus nastanthus V. Krecz. & Bobr. | Accepted |  | TRO |  | 
	
		| Juncus nebrodensis Lojac. | Synonym |  | IOPI |  | 
	
		| Juncus neesii F.Heller | Synonym |  | IOPI |  | 
	
		| Juncus nematocaulon Hook.f. | Synonym |  | IOPI |  | 
	
		| Juncus nemorosus Host [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus nemorosus Lam. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus nemorosus Pollich | Synonym |  | IOPI |  | 
	
		| Juncus nemorosus Sibth. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus neomexicanus Wiegand | Synonym |  | IOPI |  | 
	
		| Juncus nepalicus Miyam. & H.Ohba | Accepted |  | IOPI |  | 
	
		| Juncus nevadensis S.Watson | Accepted |  | IOPI |  | 
	
		| Juncus nevadensis var. badius (Suksd.) C.L.Hitchc. | Synonym |  | IOPI |  | 
	
		| Juncus nevadensis var. columbianus (Coville) H.St.John | Synonym |  | IOPI |  | 
	
		| Juncus nevadensis var. inventus (L.F.Hend.) C.L.Hitchc. | Synonym |  | IOPI |  | 
	
		| Juncus nevadensis var. nevadensis | Synonym |  | TRO |  | 
	
		| Juncus nevskii V.I.Krecz. & Gontsch. | Synonym |  | IOPI |  | 
	
		| Juncus nigricans Wolff ex Schreb. | Unresolved |  | IOPI |  | 
	
		| Juncus nigritellus D.Don [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus nigroviolaceus K.F.Wu | Synonym |  | IOPI |  | 
	
		| Juncus nikkoensis Satake | Synonym |  | IOPI |  | 
	
		| Juncus nikkoensis var. minor Satake | Synonym |  | IOPI |  | 
	
		| Juncus nikkoensis var. pinifolius Satake | Synonym |  | IOPI |  | 
	
		| Juncus niponensis Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus niponensis var. hakodatensis H.Lév. | Synonym |  | IOPI |  | 
	
		| Juncus nitidiflorus Dufour | Synonym |  | IOPI |  | 
	
		| Juncus nitidus Phil. | Unresolved |  | IOPI |  | 
	
		| Juncus niveus Nathh. | Synonym |  | IOPI |  | 
	
		| Juncus nodatus Coville | Accepted |  | IOPI |  | 
	
		| Juncus nodifolius Larrañaga | Unresolved |  | IOPI |  | 
	
		| Juncus × nodosiformis Fernald | Accepted |  | IOPI |  | 
	
		| Juncus nodosus L. | Accepted |  | IOPI |  | 
	
		| Juncus nodosus f. intermedius Kneuck. | Synonym |  | IOPI |  | 
	
		| Juncus nodosus var. megacephalus Torr. | Synonym |  | IOPI |  | 
	
		| Juncus nodosus var. meridianus F.J.Herm. | Synonym |  | IOPI |  | 
	
		| Juncus nodosus var. prolifer Lunell | Synonym |  | IOPI |  | 
	
		| Juncus nodosus var. texanus Engelm. | Synonym |  | IOPI |  | 
	
		| Juncus nodulosus Wahlenb. | Synonym |  | IOPI |  | 
	
		| Juncus nodulosus Bory & Chaub. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus nodulosus var. biceps Laest. ex Wahlenb. | Synonym |  | IOPI |  | 
	
		| Juncus nodulosus f. dissolutus Lindm. | Synonym |  | IOPI |  | 
	
		| Juncus nodulosus var. marshallii (Pugsley) P.W.Richards | Synonym |  | IOPI |  | 
	
		| Juncus nodulosus var. rariflorus (Hartm.) Fr. | Synonym |  | IOPI |  | 
	
		| Juncus nodulosus var. uniceps Laest. ex Wahlenb. | Synonym |  | IOPI |  | 
	
		| Juncus novae-zelandiae Hook.f. | Accepted |  | IOPI |  | 
	
		| Juncus novikovii A.P.Khokhr. | Synonym |  | IOPI |  | 
	
		| Juncus nupela Veldkamp | Accepted |  | IOPI |  | 
	
		| Juncus nutans Chaix ex Vill. [Invalid] | Synonym |  | IOPI |  | 
	
		| Juncus oauciflorus R. Br. | Unresolved |  | TRO |  | 
	
		| Juncus obliquus Adamson | Accepted |  | IOPI |  | 
	
		| Juncus × obotritorum Rothm. | Accepted |  | IOPI |  | 
	
		| Juncus obtusatus Kit. ex Schult. | Synonym |  | IOPI |  | 
	
		| Juncus obtusatus Engelm. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus obtusiflorus Ehrh. ex Hoffm. | Synonym |  | IOPI |  | 
	
		| Juncus obtusiflorus var. laxus M.Mandon & Foucaud | Synonym |  | IOPI |  | 
	
		| Juncus obtusiflorus var. rubellus Erdner | Synonym |  | IOPI |  | 
	
		| Juncus obtusiflorus var. schillingeri G.Fischer | Synonym |  | IOPI |  | 
	
		| Juncus occidentalis Wiegand | Accepted |  | IOPI |  | 
	
		| Juncus ochraceus Buchenau | Accepted |  | IOPI |  | 
	
		| Juncus ochrocoleus L.A.S.Johnson | Accepted |  | IOPI |  | 
	
		| Juncus odoratus (Torr.) Steud. | Synonym |  | IOPI |  | 
	
		| Juncus oehleri Graebn. | Synonym |  | IOPI |  | 
	
		| Juncus ohwianus Kao | Synonym |  | IOPI |  | 
	
		| Juncus oliganthus Phil. | Synonym |  | IOPI |  | 
	
		| Juncus oligocephalus Satake & Ohwi | Synonym |  | IOPI |  | 
	
		| Juncus olympicus Schott, Nyman & Kotschy | Synonym |  | IOPI |  | 
	
		| Juncus orchonicus Novikov | Accepted |  | IOPI |  | 
	
		| Juncus oreganus S.Watson | Synonym |  | IOPI |  | 
	
		| Juncus orientalis (Snogerup) Filim. | Synonym |  | IOPI |  | 
	
		| Juncus orientalis Filimonova | Accepted |  | TRO |  | 
	
		| Juncus orizabae Liebm. | Synonym |  | IOPI |  | 
	
		| Juncus × oronensis Fernald | Accepted |  | IOPI |  | 
	
		| Juncus orthophyllus Coville | Accepted |  | IOPI |  | 
	
		| Juncus orthophyllus f. congestus (Suksd.) H.St.John | Synonym |  | IOPI |  | 
	
		| Juncus orthophyllus var. congestus Suksd. | Synonym |  | IOPI |  | 
	
		| Juncus oxycarpus E.Mey. ex Kunth | Accepted |  | IOPI |  | 
	
		| Juncus oxycarpus var. microcephalus Adamson | Synonym |  | IOPI |  | 
	
		| Juncus oxycarpus subsp. sparganioides Weim. | Synonym |  | IOPI |  | 
	
		| Juncus oxymeris Engelm. | Accepted |  | IOPI |  | 
	
		| Juncus pacificus (Engelm.) B.D.Jacks. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus palensis Maly | Synonym |  | IOPI |  | 
	
		| Juncus pallescens Lam. | Accepted |  | IOPI |  | 
	
		| Juncus pallescens Wahlenb. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus pallescens var. achalensis (Barros) Novara | Synonym |  | IOPI |  | 
	
		| Juncus pallidus R.Br. | Accepted |  | IOPI |  | 
	
		| Juncus pallidus Hoppe [Invalid] | Synonym |  | IOPI |  | 
	
		| Juncus pallidus var. triandrus Cheeseman | Synonym |  | IOPI |  | 
	
		| Juncus paludosus E.L.Bridges & Orzell | Accepted |  | IOPI |  | 
	
		| Juncus palustris Gromov | Unresolved |  | IOPI |  | 
	
		| Juncus paniculatus Hoppe ex Schult. & Schult.f. | Synonym |  | IOPI |  | 
	
		| Juncus paniculatus Hoppe ex Mert. & W.D.J. Koch | Synonym |  | TRO |  | 
	
		| Juncus paniculatus subsp. depauperatus (Ten.) Nyman | Synonym |  | IOPI |  | 
	
		| Juncus papillosus Franch. & Sav. | Accepted |  | IOPI |  | 
	
		| Juncus papillosus var. virens (Buchenau) Vorosch. | Synonym |  | IOPI |  | 
	
		| Juncus paradoxus E.Mey. | Synonym |  | IOPI |  | 
	
		| Juncus parous Rydb. | Synonym |  | IOPI |  | 
	
		| Juncus parryi Engelm. | Accepted |  | IOPI |  | 
	
		| Juncus parviflorus Poir. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus parviflorus Ehrh. | Synonym |  | IOPI |  | 
	
		| Juncus parvulus E.Mey. ex Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus patens E.Mey. | Accepted |  | IOPI |  | 
	
		| Juncus paucicapitatus Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus pauciflorus R.Br. | Accepted |  | IOPI |  | 
	
		| Juncus pauciflorus Moench ex Schleich. [Invalid] | Synonym |  | IOPI |  | 
	
		| Juncus pauciflorus Kirk [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus pauciflorus var. cheesemanii Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus pauciflorus var. gunnii (Hook.f.) Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus paui Sennen | Synonym |  | IOPI |  | 
	
		| Juncus pauperculus O.Schwarz [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus pauperculus Raf. | Unresolved |  | IOPI |  | 
	
		| Juncus pediformis Chaix | Synonym |  | IOPI |  | 
	
		| Juncus pelocarpus E.Mey. | Accepted |  | IOPI |  | 
	
		| Juncus pelocarpus var. crassicaudex Engelm. | Synonym |  | IOPI |  | 
	
		| Juncus pelocarpus var. fluitans Buchenau | Synonym |  | TRO |  | 
	
		| Juncus pelocarpus var. pelocarpus | Synonym |  | TRO |  | 
	
		| Juncus pelocarpus f. pelocarpus | Synonym |  | TRO |  | 
	
		| Juncus pelocarpus var. sabulonensis H.St.John | Synonym |  | IOPI |  | 
	
		| Juncus pelocarpus f. submersus Fassett | Synonym |  | IOPI |  | 
	
		| Juncus pelocarpus var. subtilis (E.Mey.) Engelm. | Synonym |  | IOPI |  | 
	
		| Juncus perparvus K.F.Wu | Synonym |  | IOPI |  | 
	
		| Juncus perpusillus Sam. | Accepted |  | IOPI |  | 
	
		| Juncus perpusillus (Fern.-Carv. & Navarro) Rivas Mart., Fern.Gonz. & Sánchez Mata [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus persicus Boiss. | Accepted |  | IOPI |  | 
	
		| Juncus persicus subsp. libanoticus (J.Thiébaut) Novikov & Snogerup | Accepted |  | IOPI |  | 
	
		| Juncus persicus subsp. persicus | Synonym |  | IOPI |  | 
	
		| Juncus persicus subsp. vvedenskii (V.I.Krecz.) Novikov | Synonym |  | IOPI |  | 
	
		| Juncus pervetus Fernald | Accepted |  | IOPI |  | 
	
		| Juncus phaeanthus L.A.S.Johnson | Accepted |  | IOPI |  | 
	
		| Juncus phaeocarpus A.M.Lu & Z.Y.Zhang | Synonym |  | IOPI |  | 
	
		| Juncus phaeocephalus Engelm. | Accepted |  | IOPI |  | 
	
		| Juncus phaeocephalus var. glomeratus Engelm. [Invalid] | Synonym |  | IOPI |  | 
	
		| Juncus phaeocephalus var. gracilis Engelm. | Synonym |  | IOPI |  | 
	
		| Juncus phaeocephalus var. phaeocephalus | Synonym |  | IOPI |  | 
	
		| Juncus phalereus Gand. | Synonym |  | IOPI |  | 
	
		| Juncus philippii Lojac. | Unresolved |  | IOPI |  | 
	
		| Juncus phyllophorus Lojac. | Unresolved |  | IOPI |  | 
	
		| Juncus pictus Steud. | Accepted |  | IOPI |  | 
	
		| Juncus pictus F.Phil. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus pilosus L. | Synonym |  | IOPI |  | 
	
		| Juncus pilosus subsp. cymosus Schrank | Synonym |  | IOPI |  | 
	
		| Juncus pilosus subsp. fascicularis Schrank | Synonym |  | IOPI |  | 
	
		| Juncus pilosus subsp. glabrescens Schrank | Synonym |  | IOPI |  | 
	
		| Juncus pilosus subsp. maximus (Reichard) Ehrh. | Synonym |  | IOPI |  | 
	
		| Juncus pilosus var. vernalis (Reichard) Pers. | Synonym |  | IOPI |  | 
	
		| Juncus pisuergae P.Monts. | Synonym |  | IOPI |  | 
	
		| Juncus planifolius R.Br. | Accepted |  | IOPI |  | 
	
		| Juncus planifolius var. chathamensis Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus planifolius var. demissus (Steud.) Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus planifolius var. humilis Ostenf. | Synonym |  | IOPI |  | 
	
		| Juncus planifolius var. planifolius | Synonym |  | TRO |  | 
	
		| Juncus planifolius var. tenellus Benth. | Synonym |  | IOPI |  | 
	
		| Juncus platycaulos Kunth | Synonym |  | IOPI |  | 
	
		| Juncus platyphyllus (Wiegand) Fernald | Synonym |  | IOPI |  | 
	
		| Juncus plebeius R.Br. | Synonym |  | IOPI |  | 
	
		| Juncus plumosus Wall. ex E. Mey. | Synonym |  | TRO |  | 
	
		| Juncus pohlii Steud. | Synonym |  | IOPI |  | 
	
		| Juncus polyanthemus Buchenau | Accepted |  | IOPI |  | 
	
		| Juncus polyanthemus var. cheesemanii (Buchenau) Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus polycarpus Mey. | Unresolved |  | TRO |  | 
	
		| Juncus polycephalus D.Don ex Hook. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus polycephalus Michx. | Accepted |  | IOPI |  | 
	
		| Juncus polycephalus var. crassifolius Michx. | Synonym |  | IOPI |  | 
	
		| Juncus polycephalus var. depauperatus Torr. | Synonym |  | IOPI |  | 
	
		| Juncus polycephalus var. paradoxus (E.Mey.) Torr. | Synonym |  | IOPI |  | 
	
		| Juncus polycephalus var. tenuifolius Michx. | Synonym |  | IOPI |  | 
	
		| Juncus polytrichos E.Mey. & Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus pondii Alph.Wood | Synonym |  | IOPI |  | 
	
		| Juncus ponticus Steven | Synonym |  | IOPI |  | 
	
		| Juncus potaninii Buchenau | Accepted |  | IOPI |  | 
	
		| Juncus potaninii subsp. potaninii | Synonym |  | IOPI |  | 
	
		| Juncus potaninii subsp. woroschilovii (Nechaev & Novikov) Novikov | Accepted |  | IOPI |  | 
	
		| Juncus pringlei Fernald | Synonym |  | IOPI |  | 
	
		| Juncus prismatocarpus R.Br. | Accepted |  | IOPI |  | 
	
		| Juncus prismatocarpus subsp. leschenaultii (Gay ex Laharpe) Kirschner | Accepted |  | IOPI |  | 
	
		| Juncus prismatocarpus var. leschenaultii (Gay ex Laharpe) Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus prismatocarpus subsp. prismatocarpus | Synonym |  | IOPI |  | 
	
		| Juncus prismatocarpus subsp. teretifolius K.F.Wu | Synonym |  | IOPI |  | 
	
		| Juncus procerus E.Mey. | Accepted |  | IOPI |  | 
	
		| Juncus procerus Bianca [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus prolifer Kunth | Synonym |  | IOPI |  | 
	
		| Juncus prominens (Buchenau) Miyabe & Kudo | Accepted |  | IOPI |  | 
	
		| Juncus prominens Miyabe et Kudo | Unresolved |  | TRO |  | 
	
		| Juncus proximus Steud. | Synonym |  | IOPI |  | 
	
		| Juncus przewalskii Buchenau | Accepted |  | IOPI |  | 
	
		| Juncus przewalskii var. discolor Sam. | Synonym |  | IOPI |  | 
	
		| Juncus przewalskii var. multiflorus S.Y.Bao | Synonym |  | IOPI |  | 
	
		| Juncus przewalskii var. przewalskii | Synonym |  | TRO |  | 
	
		| Juncus psammophilus L.A.S.Johnson | Accepted |  | IOPI |  | 
	
		| Juncus pseudacutus Pau | Synonym |  | IOPI |  | 
	
		| Juncus pseudocastaneus (Lingelsh.) Sam. | Synonym |  | IOPI |  | 
	
		| Juncus pseudokrameri Satake | Synonym |  | IOPI |  | 
	
		| Juncus pumilus Raf. | Synonym |  | IOPI |  | 
	
		| Juncus punctorius L.f. | Accepted |  | IOPI |  | 
	
		| Juncus punctorius var. exaltatus (Decne.) Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus punctorius subsp. mauritanicus Trab. | Synonym |  | IOPI |  | 
	
		| Juncus punctorius var. mauritanicus (Trab.) Buchenau & Trab. | Synonym |  | IOPI |  | 
	
		| Juncus punctorius var. schimperi (Hochst. ex A.Rich.) Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus pusillus Buchenau | Accepted |  | IOPI |  | 
	
		| Juncus pygmaeus Rich. ex Thuill. | Accepted |  | IOPI |  | 
	
		| Juncus pygmaeus var. bicephalus (Viv.) Nyman | Synonym |  | IOPI |  | 
	
		| Juncus pygmaeus var. brachycarpus P.Candargy | Synonym |  | IOPI |  | 
	
		| Juncus pygmaeus f. lacustris (Lange) Fern.-Carv. | Synonym |  | IOPI |  | 
	
		| Juncus pygmaeus var. lacustris Lange | Synonym |  | IOPI |  | 
	
		| Juncus pygmaeus f. submersus H.Glück | Synonym |  | IOPI |  | 
	
		| Juncus pygmaeus var. umbelloides Holkema | Synonym |  | IOPI |  | 
	
		| Juncus pylaei Laharpe | Accepted |  | IOPI |  | 
	
		| Juncus pyramidatus Laharpe | Synonym |  | IOPI |  | 
	
		| Juncus pyramidatus var. kotschyi (Boiss.) Boiss. | Synonym |  | IOPI |  | 
	
		| Juncus pyrenaeus Timb.-Lagr. & Jeanb. | Synonym |  | IOPI |  | 
	
		| Juncus pyrenaicus Cadevall & Pau | Synonym |  | IOPI |  | 
	
		| Juncus quartinianus A.Rich. | Synonym |  | IOPI |  | 
	
		| Juncus radicans Schltdl. | Synonym |  | IOPI |  | 
	
		| Juncus radula Buchenau | Accepted |  | IOPI |  | 
	
		| Juncus radula var. laevior Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus × raeperi Asch. & Graebn. | Unresolved |  | TRO |  | 
	
		| Juncus ramboi Barros | Accepted |  | IOPI |  | 
	
		| Juncus ramboi f. explicatus Barros | Synonym |  | IOPI |  | 
	
		| Juncus ramboi subsp. ramboi | Synonym |  | IOPI |  | 
	
		| Juncus ranarius Songeon & E.P.Perrier | Accepted |  | IOPI |  | 
	
		| Juncus ranarius var. ossoraicus Novikov | Synonym |  | IOPI |  | 
	
		| Juncus ranarius subsp. turkestanicus Novikov | Synonym |  | TRO |  | 
	
		| Juncus rariflorus Hartm. | Synonym |  | IOPI |  | 
	
		| Juncus rariflorus var. obtusatus Hartm. | Synonym |  | IOPI |  | 
	
		| Juncus ratkowskyanus L.A.S.Johnson | Accepted |  | IOPI |  | 
	
		| Juncus rechingeri Snogerup | Accepted |  | IOPI |  | 
	
		| Juncus recurvatus Raf. | Unresolved |  | IOPI |  | 
	
		| Juncus regelii Buchenau | Accepted |  | IOPI |  | 
	
		| Juncus remotiflorus L.A.S.Johnson | Accepted |  | IOPI |  | 
	
		| Juncus repens Michx. | Accepted |  | IOPI |  | 
	
		| Juncus repens Req. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus requienii Parl. | Accepted |  | IOPI |  | 
	
		| Juncus retroflexus Rafn | Synonym |  | IOPI |  | 
	
		| Juncus revolutus R.Br. | Accepted |  | IOPI |  | 
	
		| Juncus rhiphaenus Pau & Font-Quer | Synonym |  | IOPI |  | 
	
		| Juncus richardsonianus Schult. & Schult.f. | Synonym |  | IOPI |  | 
	
		| Juncus rigidus Desf. | Accepted |  | IOPI |  | 
	
		| Juncus rivularis Poepp. ex Steud. | Synonym |  | IOPI |  | 
	
		| Juncus robustus S.Watson | Synonym |  | IOPI |  | 
	
		| Juncus robustus (Engelm.) Coville [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus rochelianus Schult. & Schult.f. | Synonym |  | IOPI |  | 
	
		| Juncus rochelianus var. digeneus (Borbás) Nyman | Synonym |  | IOPI |  | 
	
		| Juncus roemerianus Scheele | Accepted |  | IOPI |  | 
	
		| Juncus rohtangensis Goel & Aswal | Accepted |  | IOPI |  | 
	
		| Juncus rostkovii E.Mey. | Synonym |  | IOPI |  | 
	
		| Juncus rostratus Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus rubens Lam. | Unresolved |  | IOPI |  | 
	
		| Juncus rudis Kunth | Synonym |  | IOPI |  | 
	
		| Juncus rufus Miel. ex Huebener [Invalid] | Synonym |  | IOPI |  | 
	
		| Juncus rugosus Steud. | Synonym |  | IOPI |  | 
	
		| Juncus rugulosus Engelm. | Synonym |  | IOPI |  | 
	
		| Juncus × ruhmeri Asch. & Graebn. | Unresolved |  | IOPI |  | 
	
		| Juncus rupestris Kunth | Accepted |  | IOPI |  | 
	
		| Juncus rupestris f. gracilis Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus rupestris f. robusta Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus rupestris var. schlechteri (Buchenau) Adamson | Synonym |  | IOPI |  | 
	
		| Juncus × rusguniensis Trab. ex Maire | Unresolved |  | IOPI |  | 
	
		| Juncus saginoides Engelm. [Invalid] | Synonym |  | IOPI |  | 
	
		| Juncus salinus Durieu | Synonym |  | IOPI |  | 
	
		| Juncus salsuginosus Turcz. ex C.A.Mey. | Accepted |  | IOPI |  | 
	
		| Juncus salsuginosus Turcz. ex E. Mey. | Synonym |  | TRO |  | 
	
		| Juncus salsuginosus subsp. tuvinicus Kovt. | Synonym |  | IOPI |  | 
	
		| Juncus salsuginosus var. tuvinicus (Kovt.) Novikov | Synonym |  | IOPI |  | 
	
		| Juncus sandwithii Lourteig | Accepted |  | IOPI |  | 
	
		| Juncus sarophorus L.A.S.Johnson | Accepted |  | IOPI |  | 
	
		| Juncus satakei Kitag. | Synonym |  | IOPI |  | 
	
		| Juncus saximontanus A.Nelson | Accepted |  | IOPI |  | 
	
		| Juncus saximontanus f. brunnescens (Rydb.) F.J.Herm. | Synonym |  | IOPI |  | 
	
		| Juncus saximontanus var. robustior M.Peck | Synonym |  | IOPI |  | 
	
		| Juncus saximontanus f. saximontanus | Synonym |  | TRO |  | 
	
		| Juncus scabriusculus Kunth | Accepted |  | IOPI |  | 
	
		| Juncus scabriusculus var. subglandulosus (Steud.) Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus × scalovenicus Asch. & Graebn. | Synonym |  | IOPI |  | 
	
		| Juncus scheuchzerioides Gaudich. | Accepted |  | IOPI |  | 
	
		| Juncus scheuchzerioides var. inconspicuus (d'Urv.) Hook.f. | Synonym |  | IOPI |  | 
	
		| Juncus scheuchzerioides var. inconspicuus (d'Urv.) Hook. | Synonym |  | TRO |  | 
	
		| Juncus schimperi Hochst. ex A.Rich. | Synonym |  | IOPI |  | 
	
		| Juncus schischkinii Krylov & Sumnev. | Synonym |  | IOPI |  | 
	
		| Juncus schlagintweitii Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus schlechteri Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus schoenoides Mérat | Synonym |  | IOPI |  | 
	
		| Juncus schranckii K.Moll | Synonym |  | IOPI |  | 
	
		| Juncus scirpoides Lam. | Accepted |  | IOPI |  | 
	
		| Juncus scirpoides var. compositus R.M.Harper | Synonym |  | IOPI |  | 
	
		| Juncus scirpoides var. macrostemon (J.Gay ex Laharpe) Engelm. | Synonym |  | IOPI |  | 
	
		| Juncus scirpoides var. meridionalis Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus scirpoides var. polycephalus (Michx.) Engelm. | Synonym |  | IOPI |  | 
	
		| Juncus scirpoides var. scirpoides | Synonym |  | TRO |  | 
	
		| Juncus secundiflorus Raf. | Unresolved |  | IOPI |  | 
	
		| Juncus secundus P.Beauv. ex Poir. | Accepted |  | IOPI |  | 
	
		| Juncus sellowianus Kunth | Synonym |  | IOPI |  | 
	
		| Juncus semisolidus L.A.S.Johnson | Accepted |  | IOPI |  | 
	
		| Juncus septangulus Peterm. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus serratus L.f. | Synonym |  | IOPI |  | 
	
		| Juncus setaceus Rostk. | Synonym |  | IOPI |  | 
	
		| Juncus setchuensis Buchenau | Accepted |  | IOPI |  | 
	
		| Juncus setchuensis var. compactus Satake | Synonym |  | IOPI |  | 
	
		| Juncus setchuensis f. compactus (Satake) Satake | Synonym |  | IOPI |  | 
	
		| Juncus setchuensis var. effusoides Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus setchuensis var. setchuensis | Synonym |  | TRO |  | 
	
		| Juncus setifolius Ehrh. [Invalid] | Synonym |  | IOPI |  | 
	
		| Juncus setosus (Coville) Small | Synonym |  | IOPI |  | 
	
		| Juncus sherei Miyam. & H.Ohba | Accepted |  | IOPI |  | 
	
		| Juncus siculus Tineo | Synonym |  | IOPI |  | 
	
		| Juncus sikkimensis Hook.f. | Accepted |  | IOPI |  | 
	
		| Juncus sikkimensis var. helvolus K.F.Wu | Synonym |  | IOPI |  | 
	
		| Juncus sikkimensis var. longiflorus A.Camus | Synonym |  | IOPI |  | 
	
		| Juncus sikkimensis var. monocephalus Hook.f. | Synonym |  | IOPI |  | 
	
		| Juncus sikkimensis var. pseudocastaneus Lingelsh. | Synonym |  | IOPI |  | 
	
		| Juncus sikkimensis var. sikkimensis | Synonym |  | TRO |  | 
	
		| Juncus similis Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus sinensis Gay ex Laharpe | Synonym |  | IOPI |  | 
	
		| Juncus singularis Steud. | Synonym |  | IOPI |  | 
	
		| Juncus slwookoorum S.B.Young | Synonym |  | IOPI |  | 
	
		| Juncus smithii Kunth [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus smithii Engelm. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus socotranus (Buchenau) Snogerup | Accepted |  | IOPI |  | 
	
		| Juncus sonderianus Buchenau | Accepted |  | IOPI |  | 
	
		| Juncus soranthus Schrenk | Accepted |  | IOPI |  | 
	
		| Juncus sorrentinii Parl. | Accepted |  | IOPI |  | 
	
		| Juncus sorrentinii var. bicephalus Lojac. | Synonym |  | IOPI |  | 
	
		| Juncus sosnowskyi Novikov | Synonym |  | IOPI |  | 
	
		| Juncus spadiceus Vill. | Synonym |  | IOPI |  | 
	
		| Juncus spadiceus Schreb. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus spadiceus All. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus spanianthus Steud. | Synonym |  | IOPI |  | 
	
		| Juncus sparganiifolius Boiss. & Kotschy ex Buchenau | Accepted |  | IOPI |  | 
	
		| Juncus spectabilis Rendle | Accepted |  | IOPI |  | 
	
		| Juncus sphacelatus Decne. | Accepted |  | IOPI |  | 
	
		| Juncus sphacelatus var. himalensis (Klotzsch) Jafri | Synonym |  | IOPI |  | 
	
		| Juncus sphacelatus var. sphacelatus | Synonym |  | TRO |  | 
	
		| Juncus sphaerocarpus Nees | Accepted |  | IOPI |  | 
	
		| Juncus sphaerocarpus var. amuricus (Maxim.) Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus sphaerocephalus K.F.Wu [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus sphagnetorum (Buchenau) Adamson | Synonym |  | IOPI |  | 
	
		| Juncus sphenostemon Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus spicatus L. | Synonym |  | IOPI |  | 
	
		| Juncus spinosus Forssk. | Synonym |  | IOPI |  | 
	
		| Juncus spinosus var. congestus (L.B.Hall) Druce | Synonym |  | IOPI |  | 
	
		| Juncus sprengelii Willd. | Synonym |  | IOPI |  | 
	
		| Juncus sprengelii Nees ex Buchenau [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus sprengelii var. gracilior Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus sprengelii var. robustior Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus spretus Schult. & Schult.f. [Invalid] | Synonym |  | IOPI |  | 
	
		| Juncus spumosus Noltie | Accepted |  | IOPI |  | 
	
		| Juncus squarrosus L. | Accepted |  | IOPI |  | 
	
		| Juncus squarrosus subsp. ellmanii (C.E.Hubb., Sandwith & Turrill) Maire & Weiller | Synonym |  | IOPI |  | 
	
		| Juncus squarrosus var. glomeratus Hartm. | Synonym |  | IOPI |  | 
	
		| Juncus squarrosus var. longibracteatus Zapal. | Synonym |  | IOPI |  | 
	
		| Juncus stellatus Willd. ex Kunth [Invalid] | Synonym |  | IOPI |  | 
	
		| Juncus stenopetalus Adamson | Accepted |  | IOPI |  | 
	
		| Juncus stenophyllus Steud. | Synonym |  | IOPI |  | 
	
		| Juncus stipulatus Nees & Meyen | Accepted |  | IOPI |  | 
	
		| Juncus stipulatus var. chilensis (Gay) Kirschner | Accepted |  | IOPI |  | 
	
		| Juncus stipulatus var. corralensis (Phil.) Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus stipulatus var. stipulatus | Synonym |  | IOPI |  | 
	
		| Juncus stoechadanthos Brot. | Synonym |  | IOPI |  | 
	
		| Juncus stolonifer Wohll. | Synonym |  | IOPI |  | 
	
		| Juncus striatus Schousb. ex E.Mey. | Accepted |  | IOPI |  | 
	
		| Juncus striatus var. asper (Sauzé) Nyman | Synonym |  | IOPI |  | 
	
		| Juncus striatus var. capitulatus Lojac. | Synonym |  | IOPI |  | 
	
		| Juncus striatus var. diffusus Lange | Synonym |  | IOPI |  | 
	
		| Juncus striatus var. hochstetteri (Steud.) Nyman | Synonym |  | IOPI |  | 
	
		| Juncus striatus var. lagenarius (J.Gay ex Laharpe) Parl. | Synonym |  | IOPI |  | 
	
		| Juncus striatus subsp. lagenarius (J.Gay ex Laharpe) Arcang. | Synonym |  | IOPI |  | 
	
		| Juncus striatus var. macrocephalus Coss. & Durieu | Synonym |  | IOPI |  | 
	
		| Juncus striatus var. pauciflorus Tineo ex Parl. | Synonym |  | IOPI |  | 
	
		| Juncus striatus var. prolifer Parl. | Synonym |  | IOPI |  | 
	
		| Juncus striatus var. pygmaeus Lojac. | Synonym |  | IOPI |  | 
	
		| Juncus striatus var. radicans Lojac. | Synonym |  | IOPI |  | 
	
		| Juncus strictus Lucé | Synonym |  | IOPI |  | 
	
		| Juncus × stuckeyi Reinking | Accepted |  | IOPI |  | 
	
		| Juncus stygius L. | Accepted |  | IOPI |  | 
	
		| Juncus stygius subsp. americanus (Buchenau) Hultén | Accepted |  | IOPI |  | 
	
		| Juncus stygius var. americanus Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus stygius subsp. grossii Abrom. | Synonym |  | IOPI |  | 
	
		| Juncus stygius subsp. stygius | Synonym |  | IOPI |  | 
	
		| Juncus subarticulatus Zakirov & Novopokr. | Synonym |  | IOPI |  | 
	
		| Juncus subarticulatus Zak. & Novopokr. | Synonym |  | TRO |  | 
	
		| Juncus subcaudatus (Engelm.) Coville & S.F.Blake | Accepted |  | IOPI |  | 
	
		| Juncus subcaudatus var. planisepalus Fernald | Synonym |  | IOPI |  | 
	
		| Juncus subcaudatus var. subcaudatus | Synonym |  | TRO |  | 
	
		| Juncus subcompressus Zakirov & Novopokr. | Synonym |  | IOPI |  | 
	
		| Juncus subcuneatus C.E.Moss ex Adamson | Synonym |  | IOPI |  | 
	
		| Juncus subcuneatus var. latifolius Adamson | Synonym |  | IOPI |  | 
	
		| Juncus subcuneatus var. minor Adamson | Synonym |  | IOPI |  | 
	
		| Juncus subglandulosus Steud. | Synonym |  | IOPI |  | 
	
		| Juncus subglaucus L.A.S.Johnson | Accepted |  | IOPI |  | 
	
		| Juncus subglobosus C.E.Moss ex Adamson | Synonym |  | IOPI |  | 
	
		| Juncus subglobosus K.F.Wu [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus subincurvus Steud. | Synonym |  | IOPI |  | 
	
		| Juncus submonocephalus Steud. | Synonym |  | IOPI |  | 
	
		| Juncus subnodulosus Schrank | Accepted |  | IOPI |  | 
	
		| Juncus subnodulosus var. condensatus (Cout.) Fern-Carv. | Synonym |  | IOPI |  | 
	
		| Juncus suboxycarpus Adamson | Synonym |  | IOPI |  | 
	
		| Juncus subpilosus Gilib. | Synonym |  | TRO |  | 
	
		| Juncus subsecundus N.A.Wakef. | Accepted |  | IOPI |  | 
	
		| Juncus subtilis E.Mey. | Accepted |  | IOPI |  | 
	
		| Juncus subtriflorus (E.Mey.) Coville | Synonym |  | IOPI |  | 
	
		| Juncus subulatus Forssk. | Accepted |  | IOPI |  | 
	
		| Juncus subulatus f. salinus (Durieu) Maire | Synonym |  | IOPI |  | 
	
		| Juncus subulatus subsp. siculus (Tineo) K.Richt. | Synonym |  | IOPI |  | 
	
		| Juncus subuliflorus Drejer | Synonym |  | IOPI |  | 
	
		| Juncus subuliflorus f. laxus (Beck) Reichg. | Synonym |  | IOPI |  | 
	
		| Juncus subuliflorus f. leersii (T.Marsson) Reichg. | Synonym |  | IOPI |  | 
	
		| Juncus subuliflorus f. leersii Reichgelt | Synonym |  | TRO |  | 
	
		| Juncus subuliflorus f. praeflorens (Ade & Vollm.) Reichg. | Synonym |  | IOPI |  | 
	
		| Juncus subulitepalus Balslev | Accepted |  | IOPI |  | 
	
		| Juncus subverticillatus Wulfen | Synonym |  | IOPI |  | 
	
		| Juncus subverticillatus var. fluitans (Lam.) Wallr. | Synonym |  | IOPI |  | 
	
		| Juncus sudeticus Willd. | Synonym |  | IOPI |  | 
	
		| Juncus suksdorfii Rydb. | Synonym |  | IOPI |  | 
	
		| Juncus sulcatus Hochst. | Synonym |  | IOPI |  | 
	
		| Juncus sundaicus Ridl. | Synonym |  | IOPI |  | 
	
		| Juncus supiniformis Engelm. | Accepted |  | IOPI |  | 
	
		| Juncus supinus Moench | Synonym |  | IOPI |  | 
	
		| Juncus supinus var. confervaceus (St.-Lag.) Rouy | Synonym |  | IOPI |  | 
	
		| Juncus supinus f. confervaceus (St.-Lag.) Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus supinus var. cylindricus Husn. | Synonym |  | IOPI |  | 
	
		| Juncus supinus var. erectus Neilr. | Synonym |  | IOPI |  | 
	
		| Juncus supinus var. erectus E.Lehm. | Synonym |  | IOPI |  | 
	
		| Juncus supinus var. fluitans (Lam.) Fr. | Synonym |  | IOPI |  | 
	
		| Juncus supinus f. fluitans (Lam.) Neuman | Synonym |  | IOPI |  | 
	
		| Juncus supinus subsp. fluitans (Lam.) K.Richt. | Synonym |  | IOPI |  | 
	
		| Juncus supinus subsp. kochii (F.W.Schultz) Nyman | Synonym |  | IOPI |  | 
	
		| Juncus supinus var. kochii (F.W.Schultz) Syme | Synonym |  | IOPI |  | 
	
		| Juncus supinus f. nanus Peterm. | Synonym |  | IOPI |  | 
	
		| Juncus supinus var. nigritellus F.W.Schultz | Synonym |  | IOPI |  | 
	
		| Juncus supinus var. nigritellus W.D.J.Koch [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus supinus var. nodosus Lange | Synonym |  | IOPI |  | 
	
		| Juncus supinus var. pygmaeus T.Marsson | Synonym |  | IOPI |  | 
	
		| Juncus supinus var. repens Gren. & Godr. | Synonym |  | IOPI |  | 
	
		| Juncus supinus f. submersus Glück | Synonym |  | IOPI |  | 
	
		| Juncus supinus var. terrestris Lange | Synonym |  | IOPI |  | 
	
		| Juncus supinus subsp. uliginosus (Roth) K.Richt. | Synonym |  | IOPI |  | 
	
		| Juncus supinus var. uliginosus (Roth) Fr. | Synonym |  | IOPI |  | 
	
		| Juncus supinus var. viviparus (Relhan) Willk. & Lange | Synonym |  | IOPI |  | 
	
		| Juncus supinus var. welwitschii (Hochst. ex Steud.) Cout. | Synonym |  | IOPI |  | 
	
		| Juncus supinus subsp. welwitschii (Hochst. ex Steud.) K.Richt. | Synonym |  | IOPI |  | 
	
		| Juncus × surrejanus Druce ex Stace & Lambion | Synonym |  | IOPI |  | 
	
		| Juncus surreyanus Druce ex Stace & Lambinon | Unresolved |  | TRO |  | 
	
		| Juncus × sylvaticoides H.Lév. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus sylvaticus (L.) Reichard [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus sylvaticus Huds. | Synonym |  | IOPI |  | 
	
		| Juncus sylvaticus Muhl. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus sylvaticus var. brachiatus Lojac. | Synonym |  | IOPI |  | 
	
		| Juncus sylvaticus var. congestus Lange | Synonym |  | IOPI |  | 
	
		| Juncus sylvaticus f. divaricatus Heuffel | Synonym |  | IOPI |  | 
	
		| Juncus sylvaticus var. macrocephalus W.D.J.Koch | Synonym |  | IOPI |  | 
	
		| Juncus sylvaticus var. multiflorus Rochel | Synonym |  | IOPI |  | 
	
		| Juncus sylvaticus var. pallescens W.D.J.Koch | Synonym |  | IOPI |  | 
	
		| Juncus sylvaticus var. paniculatus Lojac. | Synonym |  | IOPI |  | 
	
		| Juncus sylvaticus var. rochelianus (Schult. & Schult.f.) Nyman | Synonym |  | IOPI |  | 
	
		| Juncus sylvaticus subsp. rugosus (Steud.) Nyman | Synonym |  | IOPI |  | 
	
		| Juncus sylvaticus var. viviparus Lange | Synonym |  | IOPI |  | 
	
		| Juncus takasagomontanus Satake | Synonym |  | IOPI |  | 
	
		| Juncus tanguticus Sam. | Synonym |  | IOPI |  | 
	
		| Juncus taonanensis Satake & Kitag. | Accepted |  | IOPI |  | 
	
		| Juncus tasmanicus Engelm. | Synonym |  | IOPI |  | 
	
		| Juncus tatewakii Satake | Synonym |  | IOPI |  | 
	
		| Juncus tenageia Ehrh. ex L.f. | Accepted |  | IOPI |  | 
	
		| Juncus tenageia subsp. acicularis (H.Roux) Bonnier & Layens | Synonym |  | IOPI |  | 
	
		| Juncus tenageia var. brunneus Neilr. | Synonym |  | IOPI |  | 
	
		| Juncus tenageia f. depauperatus Cout. | Synonym |  | IOPI |  | 
	
		| Juncus tenageia var. filiformis Gaudin | Synonym |  | IOPI |  | 
	
		| Juncus tenageia var. intermedius Gaudin | Synonym |  | IOPI |  | 
	
		| Juncus tenageia f. pauciflorus Albert | Synonym |  | IOPI |  | 
	
		| Juncus tenageia subsp. perpusillus Fern.-Carv. & Navarro | Accepted |  | IOPI |  | 
	
		| Juncus tenageia var. racemosus Gaudin | Synonym |  | IOPI |  | 
	
		| Juncus tenageia var. rhiphaenus (Pau & Font-Quer) Maire | Synonym |  | IOPI |  | 
	
		| Juncus tenageia subsp. sphaerocarpus (Nees) Trab. | Synonym |  | IOPI |  | 
	
		| Juncus tenageia var. sphaerocarpus (Nees) Cariot & St.-Lag. | Synonym |  | IOPI |  | 
	
		| Juncus tenageia var. strictus Gaudin | Synonym |  | IOPI |  | 
	
		| Juncus tenageia subsp. tenageia | Synonym |  | IOPI |  | 
	
		| Juncus tenax Banks & Sol. ex Sm. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus tenax Sol. ex G.Forst. [Invalid] | Synonym |  | IOPI |  | 
	
		| Juncus tenax Poir. [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus tenellus S.Geuns [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus tenuifolius Steud. | Synonym |  | IOPI |  | 
	
		| Juncus tenuis Willd. | Accepted |  | IOPI |  | 
	
		| Juncus tenuis var. anthelatus Wiegand | Synonym |  | IOPI |  | 
	
		| Juncus tenuis subsp. anthelatus (Wiegand) Verloove & Lambinon | Synonym |  | IOPI |  | 
	
		| Juncus tenuis f. anthelatus (Wiegand) F.J. Herm. | Synonym |  | TRO |  | 
	
		| Juncus tenuis var. bicornis (Michx.) E.Mey. | Synonym |  | IOPI |  | 
	
		| Juncus tenuis subsp. bicornis (Michx.) P.Fourn. | Synonym |  | IOPI |  | 
	
		| Juncus tenuis var. congestus Engelm. | Synonym |  | IOPI |  | 
	
		| Juncus tenuis var. dichotomus (Elliott) Alph.Wood | Synonym |  | IOPI |  | 
	
		| Juncus tenuis subsp. dichotomus (Elliott) Verloove & Lambinon | Synonym |  | IOPI |  | 
	
		| Juncus tenuis f. discretiflorus (F.J.Herm.) Fernald | Synonym |  | IOPI |  | 
	
		| Juncus tenuis subsp. dudleyi (Wiegand) P.Fourn. | Synonym |  | IOPI |  | 
	
		| Juncus tenuis var. dudleyi (Wiegand) F.J.Herm. | Synonym |  | IOPI |  | 
	
		| Juncus tenuis var. germanorum (Steud.) Rouy | Synonym |  | IOPI |  | 
	
		| Juncus tenuis var. laxiflorus Fiek | Synonym |  | IOPI |  | 
	
		| Juncus tenuis var. multicornis E.Mey. | Synonym |  | IOPI |  | 
	
		| Juncus tenuis var. nakaii Satake | Synonym |  | IOPI |  | 
	
		| Juncus tenuis var. occidentalis Coville [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus tenuis var. platycaulos (Kunth) Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus tenuis var. platyphllus (Wiegand) Cory | Synonym |  | TRO |  | 
	
		| Juncus tenuis var. secundus (P.Beauv. ex Poir.) Engelm. | Synonym |  | IOPI |  | 
	
		| Juncus tenuis var. tenuis | Synonym |  | TRO |  | 
	
		| Juncus tenuis f. tenuis | Synonym |  | TRO |  | 
	
		| Juncus tenuis var. unicornis E.Mey. | Synonym |  | IOPI |  | 
	
		| Juncus tenuis var. uniflorus Farw. | Synonym |  | IOPI |  | 
	
		| Juncus tenuis f. victorinii Raymond | Synonym |  | IOPI |  | 
	
		| Juncus tenuis f. williamsii (Fernald) F.J.Herm. | Synonym |  | IOPI |  | 
	
		| Juncus tenuis var. williamsii Fernald | Synonym |  | IOPI |  | 
	
		| Juncus terminiflorus Larrañaga | Unresolved |  | IOPI |  | 
	
		| Juncus texanus (Engelm.) Coville | Accepted |  | IOPI |  | 
	
		| Juncus textilis Buchenau | Accepted |  | IOPI |  | 
	
		| Juncus thomasii Ten. | Accepted |  | IOPI |  | 
	
		| Juncus thomasii var. laxiusculus Zapal. | Synonym |  | IOPI |  | 
	
		| Juncus thomasii subsp. palensis Maly | Synonym |  | IOPI |  | 
	
		| Juncus thompsonianus L.A.S.Johnson | Accepted |  | IOPI |  | 
	
		| Juncus thomsonii Buchenau | Accepted |  | IOPI |  | 
	
		| Juncus thomsonii var. fulvus K.F.Wu | Synonym |  | IOPI |  | 
	
		| Juncus tibeticus T.V.Egorova | Synonym |  | IOPI |  | 
	
		| Juncus tiehmii Ertter | Accepted |  | IOPI |  | 
	
		| Juncus timotensis Barros | Synonym |  | IOPI |  | 
	
		| Juncus tingitanus Maire & Weiller | Accepted |  | IOPI |  | 
	
		| Juncus tirfidus L. | Unresolved |  | TRO |  | 
	
		| Juncus tobdeniorum Noltie | Accepted |  | IOPI |  | 
	
		| Juncus togakushiensis H.Lév. | Synonym |  | IOPI |  | 
	
		| Juncus togakushiensis f. viviparus (Satake) Satake | Synonym |  | IOPI |  | 
	
		| Juncus togakushiensis var. viviparus Satake | Synonym |  | IOPI |  | 
	
		| Juncus tokubuchii Miyabe & Kudô | Synonym |  | IOPI |  | 
	
		| Juncus tommasinii Parl. | Synonym |  | IOPI |  | 
	
		| Juncus torreyi Coville | Accepted |  | IOPI |  | 
	
		| Juncus torreyi f. brevipes Farw. | Synonym |  | IOPI |  | 
	
		| Juncus torreyi var. globularis Farw. | Synonym |  | IOPI |  | 
	
		| Juncus torreyi f. longipes Farw. | Synonym |  | IOPI |  | 
	
		| Juncus torreyi var. paniculatus Farw. | Synonym |  | IOPI |  | 
	
		| Juncus torreyi var. prolifer Lunell | Synonym |  | IOPI |  | 
	
		| Juncus trachyphyllus Miyam. & H.Ohba | Accepted |  | IOPI |  | 
	
		| Juncus tracyi Rydb. | Synonym |  | IOPI |  | 
	
		| Juncus tracyi f. utahensis (R.F.Martin) F.J.Herm. | Synonym |  | IOPI |  | 
	
		| Juncus transsilvanicus Schur | Synonym |  | IOPI |  | 
	
		| Juncus tratangensis Satake | Synonym |  | IOPI |  | 
	
		| Juncus triandrus Gouan [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus tricephalus J.Gay ex Laharpe | Synonym |  | IOPI |  | 
	
		| Juncus triceps Rostk. | Synonym |  | IOPI |  | 
	
		| Juncus triceps var. koreanus (Ohwi) Satake | Synonym |  | IOPI |  | 
	
		| Juncus trichodes Steud. | Synonym |  | IOPI |  | 
	
		| Juncus trichophyllus W.W.Sm. | Accepted |  | IOPI |  | 
	
		| Juncus trifidus L. | Accepted |  | IOPI |  | 
	
		| Juncus trifidus subsp. carolinianus Hämet-Ahti | Synonym |  | IOPI |  | 
	
		| Juncus trifidus var. fastigiatus Tausch | Synonym |  | IOPI |  | 
	
		| Juncus trifidus subsp. hostii Hartm. | Synonym |  | IOPI |  | 
	
		| Juncus trifidus var. medius Rouy | Synonym |  | IOPI |  | 
	
		| Juncus trifidus var. monanthos (Jacq.) Bluff & Fingerh. | Synonym |  | TRO |  | 
	
		| Juncus trifidus subsp. monanthos (Jacq.) Asch. & Graebn. | Synonym |  | TRO |  | 
	
		| Juncus trifidus var. sessiliflorus Tausch | Synonym |  | IOPI |  | 
	
		| Juncus trifidus var. trifidus | Synonym |  | TRO |  | 
	
		| Juncus trifidus var. triflorus Krylov | Synonym |  | IOPI |  | 
	
		| Juncus trifidus var. uniflorus Tausch | Synonym |  | IOPI |  | 
	
		| Juncus trifidus var. vaginatus Neilr. | Synonym |  | IOPI |  | 
	
		| Juncus triflorus Ohwi | Synonym |  | IOPI |  | 
	
		| Juncus triformis Engelm. | Accepted |  | IOPI |  | 
	
		| Juncus triformis var. brachystylus Engelm. | Synonym |  | IOPI |  | 
	
		| Juncus triformis var. stylosus Engelm. | Synonym |  | IOPI |  | 
	
		| Juncus triformis var. uniflorus Engelm. | Synonym |  | IOPI |  | 
	
		| Juncus triglumis L. | Accepted |  | IOPI |  | 
	
		| Juncus triglumis f. acutiusculus (Norman) Neuman | Synonym |  | IOPI |  | 
	
		| Juncus triglumis var. acutiusculus Norman | Synonym |  | IOPI |  | 
	
		| Juncus triglumis subsp. albescens (Lange) Hultén | Accepted |  | IOPI |  | 
	
		| Juncus triglumis var. albescens Lange | Synonym |  | IOPI |  | 
	
		| Juncus triglumis var. copelandii Buchenau | Synonym |  | IOPI |  | 
	
		| Juncus triglumis var. fuscatus Regel | Synonym |  | IOPI |  | 
	
		| Juncus triglumis var. nigricans Regel | Synonym |  | IOPI |  | 
	
		| Juncus triglumis var. schischkinii (Krylov & Sumnev.) Novikov | Synonym |  | IOPI |  | 
	
		| Juncus triglumis subsp. triglumis | Synonym |  | IOPI |  | 
	
		| Juncus triglumis var. triglumis | Synonym |  | TRO |  | 
	
		| Juncus triglumis subsp. wakhaniensis Snogerup | Synonym |  | IOPI |  | 
	
		| Juncus trigonocarpus Steud. | Accepted |  | IOPI |  | 
	
		| Juncus trinervis Liebm. | Synonym |  | IOPI |  | 
	
		| Juncus trinervis var. elatus Liebm. | Synonym |  | IOPI |  | 
	
		| Juncus trinervis var. minor Liebm. | Synonym |  | IOPI |  | 
	
		| Juncus tristanianus Hemsl. | Synonym |  | IOPI |  | 
	
		| Juncus truncatus Rydb. | Synonym |  | IOPI |  | 
	
		| Juncus turczaninowii (Buchenau) Freyn | Synonym |  | IOPI |  | 
	
		| Juncus turczaninowii (Buchenau) V.I. Krecz. | Synonym |  | TRO |  | 
	
		| Juncus turczaninowii var. jeholensis (Satake) K.F.Wu & Ma | Synonym |  | IOPI |  | 
	
		| Juncus turkestanicus V.I.Krecz. & Gontsch. | Accepted |  | IOPI |  | 
	
		| Juncus tweedyi Rydb. | Synonym |  | IOPI |  | 
	
		| Juncus tyraicus (Pacz.) V.I.Krecz. & Gontsch. | Synonym |  | IOPI |  | 
	
		| Juncus tyraicus Novikov | Accepted |  | TRO |  | 
	
		| Juncus uliginosus Roth | Synonym |  | IOPI |  | 
	
		| Juncus uliginosus var. fluitans (Lam.) Spenn. | Synonym |  | IOPI |  | 
	
		| Juncus uliginosus var. minor Hook. | Synonym |  | IOPI |  | 
	
		| Juncus uliginosus var. subtilis (E.Mey.) Hook. | Synonym |  | IOPI |  | 
	
		| Juncus umbellatus Adamson | Synonym |  | IOPI |  | 
	
		| Juncus umbellifer H.Lév. & Vaniot | Synonym |  | IOPI |  | 
	
		| Juncus umbricatus Laharpe | Unresolved |  | TRO |  | 
	
		| Juncus uncialis Greene | Accepted |  | IOPI |  | 
	
		| Juncus unibracteatus Griff. | Synonym |  | IOPI |  | 
	
		| Juncus uniflorus W.W.Sm. | Accepted |  | IOPI |  | 
	
		| Juncus unifolius A.M.Lu & Z.Y.Zhang | Synonym |  | IOPI |  | 
	
		| Juncus uruguensis Griseb. | Accepted |  | IOPI |  | 
	
		| Juncus urvillei Steud. | Synonym |  | IOPI |  | 
	
		| Juncus usitatus L.A.S.Johnson | Accepted |  | IOPI |  | 
	
		| Juncus ustulatus Hoppe | Synonym |  | IOPI |  | 
	
		| Juncus ustulatus Buchenau [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus ustulatus var. alpestris (Hartm.) Hartm. | Synonym |  | IOPI |  | 
	
		| Juncus ustulatus var. alpinus (Vill.) Gaudin | Synonym |  | IOPI |  | 
	
		| Juncus ustulatus var. rariflorus (Hartm.) Lange | Synonym |  | IOPI |  | 
	
		| Juncus utahensis R.F.Martin | Synonym |  | IOPI |  | 
	
		| Juncus vacillans Steud. | Synonym |  | IOPI |  | 
	
		| Juncus vaginatus R.Br. | Accepted |  | IOPI |  | 
	
		| Juncus vaillantii Thuill. | Synonym |  | IOPI |  | 
	
		| Juncus × valbrayi H.Lév. | Accepted |  | IOPI |  | 
	
		| Juncus valdiviae Steud. | Synonym |  | IOPI |  | 
	
		| Juncus validus Coville | Accepted |  | IOPI |  | 
	
		| Juncus validus var. fascinatus M.C.Johnst. | Accepted |  | IOPI |  | 
	
		| Juncus validus var. validus | Synonym |  | IOPI |  | 
	
		| Juncus vallicola (Rydb.) Rydb. | Synonym |  | IOPI |  | 
	
		| Juncus vallis-demonis Lojac. | Synonym |  | IOPI |  | 
	
		| Juncus valvatus Link | Accepted |  | IOPI |  | 
	
		| Juncus valvatus var. caricinus (Durieu) Coss. & Durieu | Synonym |  | IOPI |  | 
	
		| Juncus valvatus subsp. conimbrigensis A.Fern. & R.B.Fern. | Synonym |  | IOPI |  | 
	
		| Juncus valvatus var. echinuloides (Brot.) Coss. & Durieu | Synonym |  | IOPI |  | 
	
		| Juncus variegatus Caruel | Synonym |  | IOPI |  | 
	
		| Juncus vaseyi Engelm. | Accepted |  | IOPI |  | 
	
		| Juncus venturianus Castillón | Accepted |  | IOPI |  | 
	
		| Juncus vernalis Reichard | Synonym |  | IOPI |  | 
	
		| Juncus virens Buchenau | Accepted |  | IOPI |  | 
	
		| Juncus virgatus Raf. | Unresolved |  | IOPI |  | 
	
		| Juncus viridifolius Adamson | Synonym |  | IOPI |  | 
	
		| Juncus viviparus Conrad [Illegitimate] | Synonym |  | IOPI |  | 
	
		| Juncus viviparus Relhan | Synonym |  | IOPI |  | 
	
		| Juncus vvedenskii V.I.Krecz. | Synonym |  | IOPI |  | 
	
		| Juncus wallichianus J.Gay ex Laharpe | Accepted |  | IOPI |  | 
	
		| Juncus warakensis Nábelek | Synonym |  | IOPI |  | 
	
		| Juncus webbianus V.I.Krecz. | Synonym |  | IOPI |  | 
	
		| Juncus welwitschii Hochst. ex Steud. | Synonym |  | IOPI |  | 
	
		| Juncus woroschilovii Nechaev & Novikov | Synonym |  | IOPI |  | 
	
		| Juncus woroschilovii Neczajev & Novik | Synonym |  | TRO |  | 
	
		| Juncus xantholepis Steud. | Synonym |  | IOPI |  | 
	
		| Juncus xiphioides E.Mey. | Accepted |  | IOPI |  | 
	
		| Juncus xiphioides var. auratus Engelm. | Synonym |  | IOPI |  | 
	
		| Juncus xiphioides var. glomeratus Hoover | Synonym |  | IOPI |  | 
	
		| Juncus xiphioides var. littoralis Engelm. | Synonym |  | IOPI |  | 
	
		| Juncus xiphioides var. macranthus Engelm. | Synonym |  | IOPI |  | 
	
		| Juncus xiphioides var. montanus Engelm. | Synonym |  | IOPI |  | 
	
		| Juncus xiphioides var. triandrus Engelm. | Synonym |  | IOPI |  | 
	
		| Juncus yakeisidakensis Satake | Synonym |  | IOPI |  | 
	
		| Juncus yanshanuensis Novikov | Synonym |  | IOPI |  | 
	
		| Juncus yokoscensis (Franch. & Sav.) Satake | Synonym |  | IOPI |  | 
	
		| Juncus yokoscensis var. laxus Satake | Synonym |  | IOPI |  | 
	
		| Juncus yoskisukei Goel | Synonym |  | IOPI |  | 
	
		| Juncus yui S.Y.Bao | Accepted |  | IOPI |  | 
	
		| Juncus yunnanensis A.Camus | Synonym |  | IOPI |  | 
	
		| Juncus zebrinus André | Synonym |  | IOPI |  | 
	
		| Juncus zeilanicus Houtt. | Synonym |  | IOPI |  |