| Trifolium melilotus indicus L. | Synonym |  | ILDIS | 
	
		| Trifolium melilotus officinalis L. | Synonym |  | ILDIS | 
	
		| Trifolium melilotus ruthenicum M.Bieb. | Synonym |  | ILDIS | 
	
		| Trifolium melilotus tauricum M.Bieb. | Synonym |  | ILDIS | 
	
		| Trifolium abbreviatum J.Woods | Unresolved |  | WCSP (in review) | 
	
		| Trifolium absadamii Post | Unresolved |  | WCSP (in review) | 
	
		| Trifolium abyssinicum D.Heller | Accepted |  | ILDIS | 
	
		| Trifolium acaule A.Rich. | Accepted |  | ILDIS | 
	
		| Trifolium aciculare Torr. & A.Gray | Synonym |  | ILDIS | 
	
		| Trifolium aciculare Nutt. | Synonym |  | TRO | 
	
		| Trifolium acutiflorum Murb. | Accepted |  | ILDIS | 
	
		| Trifolium adscendens Hornem. | Synonym |  | ILDIS | 
	
		| Trifolium adulterinum Beyer | Unresolved |  | WCSP (in review) | 
	
		| Trifolium affine C.Presl | Accepted |  | ILDIS | 
	
		| Trifolium africanum Ser. | Accepted |  | ILDIS | 
	
		| Trifolium agrarium sensu auct. | Synonym |  | ILDIS | 
	
		| Trifolium agrarium "L., p.p." | Synonym |  | ILDIS | 
	
		| Trifolium agrarium L. | Synonym |  | ILDIS | 
	
		| Trifolium agrestinum Boreau | Synonym |  | ILDIS | 
	
		| Trifolium aintabense Boiss. & Hausskn. | Accepted |  | ILDIS | 
	
		| Trifolium aitonii Rydb. | Synonym |  | ILDIS | 
	
		| Trifolium alatum Biv. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium albens Loudon | Synonym |  | ILDIS | 
	
		| Trifolium albiceps Ehrenb. ex Sweet | Unresolved |  | WCSP (in review) | 
	
		| Trifolium albiflorum Fisch. ex Loudon | Unresolved |  | WCSP (in review) | 
	
		| Trifolium albopurpureum Torr. & A.Gray | Accepted |  | ILDIS | 
	
		| Trifolium albopurpureum f. argillorum (Jeps.) Jepson ex McDermott | Synonym |  | TRO | 
	
		| Trifolium albopurpureum var. dichotomum (Hook. & Arn.) Isely | Synonym |  | ILDIS | 
	
		| Trifolium albopurpureum var. neolagopus (Lojac.) McDermott | Synonym |  | ILDIS | 
	
		| Trifolium albopurpureum var. olivaceum (Greene) Isely | Synonym |  | ILDIS | 
	
		| Trifolium album (Medik.) Loisel. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium album Crantz | Unresolved |  | WCSP (in review) | 
	
		| Trifolium album Lam. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium alexandrinum sensu auct. | Synonym |  | ILDIS | 
	
		| Trifolium alexandrinum L. | Accepted |  | ILDIS | 
	
		| Trifolium alexandrinum subsp. berytheum (Boiss. & Blanche) Ponert | Synonym |  | ILDIS | 
	
		| Trifolium alexandrinum var. phleoides (Boiss.) Boiss. | Synonym |  | ILDIS | 
	
		| Trifolium alexandrinum var. serotinum Zohary & Lern. | Synonym |  | TRO | 
	
		| Trifolium alexandrinum subsp. serotinum (Zohary & Lern.) Pinto da Silva | Accepted |  | TRO | 
	
		| Trifolium alexandrium L. [Spelling variant] | Synonym |  | ILDIS | 
	
		| Trifolium alopecuroides Kit. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium alopecuroides Pers. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium alpestre L. | Accepted |  | ILDIS | 
	
		| Trifolium alpestre var. alpestre L. | Accepted |  | ILDIS | 
	
		| Trifolium alpestre subsp. lanigerum (DC.) Stoj. & Stef. | Synonym |  | ILDIS | 
	
		| Trifolium alpestre var. lanigerum Ser. | Synonym |  | ILDIS | 
	
		| Trifolium alpicola Hegetschw. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium alpinum L. | Accepted |  | ILDIS | 
	
		| Trifolium alsadami POST | Unresolved |  | TRO | 
	
		| Trifolium altissimum Torr. & A.Gray | Synonym |  | ILDIS | 
	
		| Trifolium altissimum Hook. | Synonym |  | ILDIS | 
	
		| Trifolium altissimum Douglas | Synonym |  | TRO | 
	
		| Trifolium amabile Kunth | Accepted |  | ILDIS | 
	
		| Trifolium amabile Lojac. | Unresolved |  | TRO | 
	
		| Trifolium amabile var. amabile Kunth | Accepted |  | ILDIS | 
	
		| Trifolium amabile var. hemsleyi (Lojac.) D.Heller & Zohary | Accepted |  | ILDIS | 
	
		| Trifolium amabile var. longifoliolum Hemsl. | Accepted |  | TRO | 
	
		| Trifolium amabile var. longifolium Hemsl. | Accepted |  | ILDIS | 
	
		| Trifolium amabile var. mexicanum (Hemsl.) D.Heller & Zohary | Accepted |  | ILDIS | 
	
		| Trifolium amabile var. pedicellaris Ball | Accepted |  | ILDIS | 
	
		| Trifolium amabile var. pentlandii Ball | Accepted |  | TRO | 
	
		| Trifolium amani Post & Beauverd | Unresolved |  | WCSP (in review) | 
	
		| Trifolium ambiguum M.Bieb. | Accepted |  | ILDIS | 
	
		| Trifolium amoenum Greene | Synonym |  | ILDIS | 
	
		| Trifolium amphianthum Torr. & A.Gray | Synonym |  | ILDIS | 
	
		| Trifolium amphicarpum Phil. | Synonym |  | ILDIS | 
	
		| Trifolium amplectens Torr. & A.Gray | Synonym |  | ILDIS | 
	
		| Trifolium amplectens var. diversifolium (Nutt.) Jeps. | Synonym |  | ILDIS | 
	
		| Trifolium amplectens var. hydrophilum (Greene) Jeps. | Synonym |  | ILDIS | 
	
		| Trifolium amplectens var. stenophyllum (Nutt.) Jeps. | Synonym |  | ILDIS | 
	
		| Trifolium amplectens var. truncatum (Greene) Jeps. | Synonym |  | ILDIS | 
	
		| Trifolium ampulescens Gilib. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium anatolicum Boiss. | Synonym |  | ILDIS | 
	
		| Trifolium andersonii A.Gray | Accepted |  | ILDIS | 
	
		| Trifolium andersonii subsp. beatleyae J.M.Gillett | Accepted |  | ILDIS | 
	
		| Trifolium andersonii var. beatleyae (J.M.Gillett) Isely | Synonym |  | ILDIS | 
	
		| Trifolium andersonii subsp. monoense (Greene) J.M.Gillett | Accepted |  | ILDIS | 
	
		| Trifolium andersonii var. monoense (Greene) Isely | Synonym |  | ILDIS | 
	
		| Trifolium andersonii f. monoense (Greene) McDermott | Synonym |  | TRO | 
	
		| Trifolium andinum Torr. & A.Gray | Accepted |  | ILDIS | 
	
		| Trifolium andinum Nutt. | Unresolved |  | TRO | 
	
		| Trifolium andinum var. andinum | Synonym |  | TRO | 
	
		| Trifolium andinum var. podocephalum Barneby | Synonym |  | ILDIS | 
	
		| Trifolium andrewsii (A.Gray) A.Heller | Synonym |  | ILDIS | 
	
		| Trifolium andricum Lassen | Unresolved |  | WCSP (in review) | 
	
		| Trifolium anemophilum Greene | Synonym |  | ILDIS | 
	
		| Trifolium angulatum Waldst. & Kit. | Accepted |  | ILDIS | 
	
		| Trifolium angustifolium L. | Accepted |  | ILDIS | 
	
		| Trifolium angustifolium subsp. gibellianum Pignatti | Synonym |  | ILDIS | 
	
		| Trifolium angustifolium subsp. intermedium (Gibelli & Belli) Arcang. | Synonym |  | ILDIS | 
	
		| Trifolium angustifolium var. intermedium Gibelli & Belli | Synonym |  | ILDIS | 
	
		| Trifolium angustifolium subsp. intermedium (Guss.) Ponert | Accepted |  | TRO | 
	
		| Trifolium angustifolium var. intermedium (Guss.) Gib. & Belli | Synonym |  | TRO | 
	
		| Trifolium angustifolium subsp. pamphylicum (Boiss. & Heldr.) Ponert | Accepted |  | TRO | 
	
		| Trifolium angustifolium subsp. purpureum (Loisel.) Ponert | Synonym |  | ILDIS | 
	
		| Trifolium ankaratrense Bosser | Accepted |  | ILDIS | 
	
		| Trifolium ankaratrensis Bosser [Spelling variant] | Synonym |  | ILDIS | 
	
		| Trifolium anodon Greene | Synonym |  | ILDIS | 
	
		| Trifolium anomalum Schrank | Unresolved |  | WCSP (in review) | 
	
		| Trifolium anomalum Bory & Chaub. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium antucoensis D.Heller | Accepted |  | ILDIS | 
	
		| Trifolium apertum Bobrov | Accepted |  | ILDIS | 
	
		| Trifolium apertum subsp. kilaeum (Zohary & Lerner) Ponert | Synonym |  | ILDIS | 
	
		| Trifolium apertum var. kilaeum Zohary & Lerner | Synonym |  | ILDIS | 
	
		| Trifolium apertum var. kilaeum Zohary & Lern. | Synonym |  | TRO | 
	
		| Trifolium appendiculatum Lojac. | Synonym |  | ILDIS | 
	
		| Trifolium appendiculatum var. rostratum (Greene) Jeps. | Synonym |  | ILDIS | 
	
		| Trifolium appendiculatum f. rostratum (Greene) McDermott | Synonym |  | TRO | 
	
		| Trifolium arachnoideum C.Presl | Unresolved |  | WCSP (in review) | 
	
		| Trifolium arcuatum Piper | Synonym |  | ILDIS | 
	
		| Trifolium arcuatum var. cusickii Piper | Synonym |  | ILDIS | 
	
		| Trifolium arcuatum var. harneyense (Howell) Piper | Synonym |  | ILDIS | 
	
		| Trifolium arenivagum Boreau | Synonym |  | ILDIS | 
	
		| Trifolium argentinense Speg. | Synonym |  | ILDIS | 
	
		| Trifolium argutum Sol. | Accepted |  | ILDIS | 
	
		| Trifolium arizagae Pau | Unresolved |  | WCSP (in review) | 
	
		| Trifolium arizonicum Greene | Synonym |  | ILDIS | 
	
		| Trifolium armeniacum Penny ex G.Don | Unresolved |  | WCSP (in review) | 
	
		| Trifolium armenium Eichw. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium armenium Willd. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium arrectisetum Brot. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium arvense Walter | Synonym |  | ILDIS | 
	
		| Trifolium arvense L. | Accepted |  | ILDIS | 
	
		| Trifolium arvense subsp. gracile (Thuill.) Nyman | Synonym |  | ILDIS | 
	
		| Trifolium arvense var. gracile (Thuill.) DC. | Synonym |  | ILDIS | 
	
		| Trifolium arvense subsp. gracile (Thuill.) Ponert | Accepted |  | TRO | 
	
		| Trifolium arvense subsp. gracile (Thuill.) Teles | Synonym |  | TRO | 
	
		| Trifolium arvernense Lamotte | Synonym |  | ILDIS | 
	
		| Trifolium arvicolum Jord. ex Nyman | Unresolved |  | WCSP (in review) | 
	
		| Trifolium asperulum De Not. ex Ces. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium atlanticum Ball | Synonym |  | TRO | 
	
		| Trifolium atropurpureum Nutt. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium atrorubens (Greene) House | Synonym |  | ILDIS | 
	
		| Trifolium attenuatum Greene | Accepted |  | ILDIS | 
	
		| Trifolium aucheri Boiss. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium aurantiacum Boiss. & Spruner | Synonym |  | ILDIS | 
	
		| Trifolium aureum Pollich | Accepted |  | ILDIS | 
	
		| Trifolium austinae McDermott | Synonym |  | ILDIS | 
	
		| Trifolium axillare Phil. | Synonym |  | ILDIS | 
	
		| Trifolium baccarinii Chiov. | Accepted |  | ILDIS | 
	
		| Trifolium badium Schreb. | Accepted |  | ILDIS | 
	
		| Trifolium badium subsp. pseudobadium (Velen.) Kozuharov | Synonym |  | ILDIS | 
	
		| Trifolium badium subsp. rivulare (Boiss. & Balansa) Townsend | Synonym |  | TRO | 
	
		| Trifolium badium subsp. rytidosemium Hossain | Synonym |  | TRO | 
	
		| Trifolium baeticum Boiss. | Synonym |  | ILDIS | 
	
		| Trifolium baicalense Belyaeva & Sipliv. | Synonym |  | ILDIS | 
	
		| Trifolium balansae Boiss. | Synonym |  | ILDIS | 
	
		| Trifolium balbisianum Ser. | Synonym |  | ILDIS | 
	
		| Trifolium balcanicum Velen. | Unresolved |  | TRO | 
	
		| Trifolium banaticum (Heuff.) Májovský | Unresolved |  | WCSP (in review) | 
	
		| Trifolium barbatum DC. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium barbeyi Gibelli & Belli | Accepted |  | ILDIS | 
	
		| Trifolium barbigerum Torr. | Accepted |  | ILDIS | 
	
		| Trifolium barbigerum var. andrewsii A.Gray | Accepted |  | ILDIS | 
	
		| Trifolium barbigerum var. lilacinum (Greene) Jeps. | Synonym |  | ILDIS | 
	
		| Trifolium barbulatum (Freyn & Sint.) Zohary | Unresolved |  | WCSP (in review) | 
	
		| Trifolium barbulatum Freyn & Sint. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium barnebyi (Isely) Dorn & Lichvar | Accepted |  | ILDIS | 
	
		| Trifolium basileianum Chiov. | Synonym |  | ILDIS | 
	
		| Trifolium bastetanum Gand. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium batmanicum Katzn. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium beckwithii S.Watson | Accepted |  | ILDIS | 
	
		| Trifolium bejariense Moric. | Accepted |  | ILDIS | 
	
		| Trifolium bellianum Chiov. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium benghalense Gaertn. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium × bertrandii Rouy | Unresolved |  | WCSP (in review) | 
	
		| Trifolium berytheum Boiss. & Blanche | Accepted |  | ILDIS | 
	
		| Trifolium biasolettianum Steud. & Hochst. ex W.D.J.Koch | Unresolved |  | WCSP (in review) | 
	
		| Trifolium biasolettii Steud. & Hochst. | Synonym |  | ILDIS | 
	
		| Trifolium bicephalum Elmer | Synonym |  | ILDIS | 
	
		| Trifolium biceps Schousb. ex Ball | Unresolved |  | WCSP (in review) | 
	
		| Trifolium bicolor Moench | Unresolved |  | WCSP (in review) | 
	
		| Trifolium bicorne Forssk. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium biebersteinii Boiss. | Accepted |  | ILDIS | 
	
		| Trifolium bifidum A.Gray | Accepted |  | ILDIS | 
	
		| Trifolium bifidum var. decipiens Greene | Accepted |  | ILDIS | 
	
		| Trifolium biflorum L. | Synonym |  | ILDIS | 
	
		| Trifolium bifurcatum Pourr. ex Willk. & Lange | Unresolved |  | WCSP (in review) | 
	
		| Trifolium bilineatum Fresen. | Accepted |  | ILDIS | 
	
		| Trifolium billardierei Spreng. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium bithynicum Boiss. | Accepted |  | ILDIS | 
	
		| Trifolium bituminosum Garsault | Unresolved |  | WCSP (in review) | 
	
		| Trifolium bivestitum Gand. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium bivonae Guss. | Accepted |  | ILDIS | 
	
		| Trifolium blancheanum Boiss. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium blesense Dodart ex Gibelli & Belli | Unresolved |  | TRO | 
	
		| Trifolium bobrovii Khalilov | Accepted |  | ILDIS | 
	
		| Trifolium bocconei Savi | Accepted |  | ILDIS | 
	
		| Trifolium bocconei var. tenuifolium (Ten.) Griseb. | Synonym |  | ILDIS | 
	
		| Trifolium boissieri Guss. | Accepted |  | ILDIS | 
	
		| Trifolium bolanderi A.Gray | Accepted |  | ILDIS | 
	
		| Trifolium bolivianum P.B.Kenn. | Synonym |  | ILDIS | 
	
		| Trifolium bonanni PRESL | Accepted |  | TRO | 
	
		| Trifolium bonnevillei Mouterde | Unresolved |  | WCSP (in review) | 
	
		| Trifolium borderi A.Kern. ex Rouy | Unresolved |  | WCSP (in review) | 
	
		| Trifolium bordsilovskyi Grossh. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium bordzilowskyi Grossh. | Accepted |  | ILDIS | 
	
		| Trifolium boryanum Steud. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium borysthenicum Gruner | Synonym |  | ILDIS | 
	
		| Trifolium bourgaei Boiss. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium brachyanthum Rouy | Unresolved |  | WCSP (in review) | 
	
		| Trifolium brachycalycinum (Katzn. & Morley) Katzn. | Accepted |  | TRO | 
	
		| Trifolium brachyodon Greene | Synonym |  | ILDIS | 
	
		| Trifolium brachyodon (Celak.) A.Kern. | Synonym |  | ILDIS | 
	
		| Trifolium brachypus (S.Watson) Blank. | Synonym |  | ILDIS | 
	
		| Trifolium brachystylos Knaf | Unresolved |  | WCSP (in review) | 
	
		| Trifolium bracteatum Schousb. | Synonym |  | ILDIS | 
	
		| Trifolium bracteolatum Rydb. | Synonym |  | ILDIS | 
	
		| Trifolium brandegei S.Watson | Accepted |  | ILDIS | 
	
		| Trifolium brevidens Conrath & Freyn | Unresolved |  | WCSP (in review) | 
	
		| Trifolium brevipes Phil. | Synonym |  | ILDIS | 
	
		| Trifolium breweri S.Watson | Accepted |  | ILDIS | 
	
		| Trifolium brittingeri Opiz | Synonym |  | ILDIS | 
	
		| Trifolium broteri Link | Unresolved |  | WCSP (in review) | 
	
		| Trifolium brunellii Chiov. ex Fiori | Unresolved |  | WCSP (in review) | 
	
		| Trifolium brutium Ten. | Accepted |  | ILDIS | 
	
		| Trifolium buckwestiorum Isely | Accepted |  | ILDIS | 
	
		| Trifolium bullatum Boiss. & Hausskn. | Accepted |  | ILDIS | 
	
		| Trifolium bullatum var. macrosphaerum ZOHARY | Synonym |  | TRO | 
	
		| Trifolium burchellianum Ser. | Accepted |  | ILDIS | 
	
		| Trifolium burchellianum subsp. burchellianum Ser. | Accepted |  | ILDIS | 
	
		| Trifolium burchellianum subsp. johnstonii (Oliv.) J.B.Gillett | Accepted |  | ILDIS | 
	
		| Trifolium burchellianum var. johnstonii (Oliv.) J.B. Gillett | Synonym |  | TRO | 
	
		| Trifolium buxbaumii Sternb. & Hoppe | Unresolved |  | WCSP (in review) | 
	
		| Trifolium caeruleum L. | Synonym |  | ILDIS | 
	
		| Trifolium caespitosum A.Reyn. | Synonym |  | ILDIS | 
	
		| Trifolium calabricum Steud. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium calcaricum J.L.Collins & Wieboldt | Accepted |  | ILDIS | 
	
		| Trifolium californicum Jeps. | Synonym |  | ILDIS | 
	
		| Trifolium californicum f. turbinatum (Jeps.) Jepson ex McDermott | Synonym |  | TRO | 
	
		| Trifolium calocephalum Torr. & A.Gray | Synonym |  | ILDIS | 
	
		| Trifolium calocephalum Fresen. | Synonym |  | ILDIS | 
	
		| Trifolium calophyllum Greene | Synonym |  | ILDIS | 
	
		| Trifolium caloxanthum Griseb. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium calycinum Steud. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium campestre Schreb. | Accepted |  | ILDIS | 
	
		| Trifolium campestre var. lagrangei (Boiss.) Zohary | Synonym |  | ILDIS | 
	
		| Trifolium candollei Post | Unresolved |  | WCSP (in review) | 
	
		| Trifolium canescens Willd. | Accepted |  | ILDIS | 
	
		| Trifolium capense Willd. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium capillatum Dumort. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium capilliforme Delile ex Nyman | Unresolved |  | WCSP (in review) | 
	
		| Trifolium capitellatum Pau | Unresolved |  | WCSP (in review) | 
	
		| Trifolium capitulatum Pau | Synonym |  | ILDIS | 
	
		| Trifolium carmeli Boiss. | Synonym |  | ILDIS | 
	
		| Trifolium carmelii var. serrulatum Hossain | Synonym |  | TRO | 
	
		| Trifolium carolinianum Michx. | Accepted |  | ILDIS | 
	
		| Trifolium carolinianum f. bejariense (Moric.) McDermott | Synonym |  | TRO | 
	
		| Trifolium carpathicum Janka ex Nyman | Unresolved |  | WCSP (in review) | 
	
		| Trifolium carteiense Coincy | Synonym |  | ILDIS | 
	
		| Trifolium cassium Boiss. | Synonym |  | ILDIS | 
	
		| Trifolium catalinae S.Watson | Synonym |  | ILDIS | 
	
		| Trifolium catanense H.Buek | Unresolved |  | WCSP (in review) | 
	
		| Trifolium caucasicum Tausch | Accepted |  | ILDIS | 
	
		| Trifolium caudatum Boiss. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium caurinum Piper | Synonym |  | ILDIS | 
	
		| Trifolium celtibericum Pau | Synonym |  | ILDIS | 
	
		| Trifolium ceretanum Sennen | Unresolved |  | WCSP (in review) | 
	
		| Trifolium cernuum Brot. | Accepted |  | ILDIS | 
	
		| Trifolium cernuum subsp. perreymondii (Gren.) P.Fourn. | Synonym |  | ILDIS | 
	
		| Trifolium × charrierii H.J.Coste | Unresolved |  | WCSP (in review) | 
	
		| Trifolium cheranganiense J.B.Gillett | Accepted |  | ILDIS | 
	
		| Trifolium cherleri L. | Accepted |  | ILDIS | 
	
		| Trifolium chiclense Ball | Synonym |  | ILDIS | 
	
		| Trifolium chilaloense Thulin | Accepted |  | ILDIS | 
	
		| Trifolium chilense Hook. & Arn. | Accepted |  | ILDIS | 
	
		| Trifolium chlorotrichum Boiss. & Balansa | Unresolved |  | WCSP (in review) | 
	
		| Trifolium chrysanthoides Candargy | Unresolved |  | WCSP (in review) | 
	
		| Trifolium chrysanthum Hook. & Arn. | Synonym |  | ILDIS | 
	
		| Trifolium chrysopogon Viv. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium ciliatum Nutt. | Synonym |  | ILDIS | 
	
		| Trifolium ciliatum var. discolor Lojac. | Synonym |  | ILDIS | 
	
		| Trifolium ciliolatum Benth. | Accepted |  | ILDIS | 
	
		| Trifolium ciliosum Thuill. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium cinctum DC. | Accepted |  | ILDIS | 
	
		| Trifolium cinerascens Kit. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium circumdatum Kunze | Synonym |  | ILDIS | 
	
		| Trifolium circumscissum Pers. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium cisvolgense Sprygin ex Iljin & Trukhaleva | Synonym |  | TRO | 
	
		| Trifolium ciswolgense Sprygin | Synonym |  | ILDIS | 
	
		| Trifolium ciswolgense Iljin & Trukh. | Synonym |  | ILDIS | 
	
		| Trifolium clandestinum Lag. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium clausonis Pomel | Unresolved |  | WCSP (in review) | 
	
		| Trifolium clusii Godr. & Gren. | Accepted |  | ILDIS | 
	
		| Trifolium clypeatum L. | Accepted |  | ILDIS | 
	
		| Trifolium coarctatum Rchb. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium coccineum Steud. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium coerulescens M.Bieb. | Synonym |  | ILDIS | 
	
		| Trifolium cognatum House | Synonym |  | ILDIS | 
	
		| Trifolium collinum Bastard | Unresolved |  | WCSP (in review) | 
	
		| Trifolium columbinum Greene | Synonym |  | ILDIS | 
	
		| Trifolium columbinum var. argillorum Jeps. | Synonym |  | ILDIS | 
	
		| Trifolium columbinum var. olivaceum (Greene) Jeps. | Synonym |  | ILDIS | 
	
		| Trifolium commutatum Ledeb. | Synonym |  | ILDIS | 
	
		| Trifolium comosum Labill. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium comosum L. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium compactum Post | Synonym |  | ILDIS | 
	
		| Trifolium concinnum Phil. | Synonym |  | ILDIS | 
	
		| Trifolium confrsum Rydb. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium confusum Rydb. | Synonym |  | ILDIS | 
	
		| Trifolium congestum Guss. | Accepted |  | ILDIS | 
	
		| Trifolium constantinopolitanum Ser. | Accepted |  | ILDIS | 
	
		| Trifolium constantinopolitanum var. carmelii (Boiss.) Thell. | Synonym |  | TRO | 
	
		| Trifolium controversum Jan ex Ser. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium cordifolium Walp. | Unresolved |  | TRO | 
	
		| Trifolium corniculatum L. | Synonym |  | ILDIS | 
	
		| Trifolium costei Sennen | Unresolved |  | TRO | 
	
		| Trifolium cousturieri Gand. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium covillei House | Synonym |  | ILDIS | 
	
		| Trifolium creticum L. | Synonym |  | ILDIS | 
	
		| Trifolium crosnierii Clos | Synonym |  | ILDIS | 
	
		| Trifolium cryptopodium A.Rich. | Accepted |  | ILDIS | 
	
		| Trifolium cryptoscias Griseb. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium cupanii Tineo | Unresolved |  | WCSP (in review) | 
	
		| Trifolium curvisepalum Tackh. | Synonym |  | ILDIS | 
	
		| Trifolium cusonii Spreng. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium cuspidatum Lour. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium cussoni Hort. Berol. ex Sprengel | Unresolved |  | TRO | 
	
		| Trifolium cyathiferum Lindl. | Accepted |  | ILDIS | 
	
		| Trifolium cylindricum Wallr. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium cylindrocephalum Gand. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium cyrenaicum (Pamp.) Maire & Weiller | Unresolved |  | WCSP (in review) | 
	
		| Trifolium cytisoides Pall. | Synonym |  | ILDIS | 
	
		| Trifolium dahuricum Laxm. | Synonym |  | ILDIS | 
	
		| Trifolium dalmaticum Vis. | Accepted |  | ILDIS | 
	
		| Trifolium dalmatinum E.H.L.Krause | Unresolved |  | WCSP (in review) | 
	
		| Trifolium dasyphyllum Torr. & A.Gray | Accepted |  | ILDIS | 
	
		| Trifolium dasyphyllum subsp. anemophilum (Greene) J.M.Gillett | Accepted |  | ILDIS | 
	
		| Trifolium dasyphyllum var. anemophilum (Greene) Isely | Synonym |  | ILDIS | 
	
		| Trifolium dasyphyllum f. attenuatum (Greene) McDermott | Synonym |  | TRO | 
	
		| Trifolium dasyphyllum subsp. dasyphyllum Torr. & A.Gray | Accepted |  | ILDIS | 
	
		| Trifolium dasyphyllum var. stenolobum (Rydb.) McDermott | Synonym |  | ILDIS | 
	
		| Trifolium dasyphyllum subsp. uintense (Rydb.) J.M.Gillett | Accepted |  | ILDIS | 
	
		| Trifolium dasyphyllum var. uintense (Rydb.) Isely | Synonym |  | ILDIS | 
	
		| Trifolium dasyphyllum f. uintense (Rydb.) McDermott | Synonym |  | TRO | 
	
		| Trifolium dasyphyllum var. uintense (Rydb.) S.L. Welsh | Synonym |  | TRO | 
	
		| Trifolium dasyurum C.Presl | Accepted |  | ILDIS | 
	
		| Trifolium dauricum Laxm. [Spelling variant] | Synonym |  | ILDIS | 
	
		| Trifolium daveauanum Thell. | Synonym |  | ILDIS | 
	
		| Trifolium davisii M.Hossain | Unresolved |  | WCSP (in review) | 
	
		| Trifolium davuricum Laxm. | Synonym |  | ILDIS | 
	
		| Trifolium decipiens Hornem. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium decodon Greene | Synonym |  | ILDIS | 
	
		| Trifolium decorum Chiov. | Accepted |  | ILDIS | 
	
		| Trifolium decumbens F.W.Schultz | Unresolved |  | WCSP (in review) | 
	
		| Trifolium dedeckerae J.M.Gillett | Synonym |  | ILDIS | 
	
		| Trifolium delilii Gibelli & Belli | Unresolved |  | WCSP (in review) | 
	
		| Trifolium densiflorum Phil. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium dentatum Waldst. & Kit. | Synonym |  | ILDIS | 
	
		| Trifolium denudatum Nutt. | Synonym |  | ILDIS | 
	
		| Trifolium depauperatum Desv. | Accepted |  | ILDIS | 
	
		| Trifolium depauperatum var. amplectens (Torr. & A.Gray) S.Watson | Accepted |  | ILDIS | 
	
		| Trifolium depauperatum var. angustatum (Greene) Jeps. | Synonym |  | ILDIS | 
	
		| Trifolium depauperatum var. depauperatum Desv. | Accepted |  | ILDIS | 
	
		| Trifolium depauperatum var. diversifolium (Nutt.) McDermott | Accepted |  | ILDIS | 
	
		| Trifolium depauperatum f. franciscanum (Greene) McDermott | Synonym |  | TRO | 
	
		| Trifolium depauperatum var. hydrophilum (Greene) Isely | Synonym |  | ILDIS | 
	
		| Trifolium depauperatum var. laciniatum (Greene) Jeps. | Synonym |  | ILDIS | 
	
		| Trifolium depauperatum var. stenophyllum (Nutt.) McDermott | Accepted |  | ILDIS | 
	
		| Trifolium depauperatum var. truncatum (Greene) Isely | Synonym |  | ILDIS | 
	
		| Trifolium depauperatum f. truncatum (Greene) McDermott | Synonym |  | TRO | 
	
		| Trifolium desvauxii Boiss. & Blanche | Synonym |  | ILDIS | 
	
		| Trifolium dianthum Greene | Synonym |  | ILDIS | 
	
		| Trifolium dichotomum Hook. & Arn. | Accepted |  | ILDIS | 
	
		| Trifolium dichotomum f. petrophilum (Greene ex A. Heller) McDermott | Synonym |  | TRO | 
	
		| Trifolium dichotomum var. turbinatum Jeps. | Synonym |  | ILDIS | 
	
		| Trifolium dichroanthoides Rech.f. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium dichroanthum Boiss. | Accepted |  | ILDIS | 
	
		| Trifolium diffusum Ehrh. | Accepted |  | ILDIS | 
	
		| Trifolium dimediatum Salisb. | Synonym |  | ILDIS | 
	
		| Trifolium dipsaceum Thuill. | Synonym |  | ILDIS | 
	
		| Trifolium divaricatum Hornem. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium diversifolium Nutt. | Synonym |  | ILDIS | 
	
		| Trifolium dolopium Gibelli & Belli | Accepted |  | ILDIS | 
	
		| Trifolium douglasii House | Accepted |  | ILDIS | 
	
		| Trifolium dubium Sibth. | Accepted |  | ILDIS | 
	
		| Trifolium duodecimnerve Willk. & Lange | Synonym |  | ILDIS | 
	
		| Trifolium durandoi Pomel | Unresolved |  | WCSP (in review) | 
	
		| Trifolium durandoi Pomel ex Batt. & Trab. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium echinatum M.Bieb. | Accepted |  | ILDIS | 
	
		| Trifolium echinatum var. carmeli (Boiss.) Gibelli & Belli | Accepted |  | ILDIS | 
	
		| Trifolium echinatum subsp. carmelii (Boiss.) Ponert | Accepted |  | TRO | 
	
		| Trifolium echinatum subsp. serrulatum (Hossain) Ponert | Accepted |  | TRO | 
	
		| Trifolium egrissicum Mikheev & Magulaev | Synonym |  | ILDIS | 
	
		| Trifolium ehrenbergii Sweet | Unresolved |  | WCSP (in review) | 
	
		| Trifolium elegans Savi | Synonym |  | ILDIS | 
	
		| Trifolium elgonense J.B.Gillett | Accepted |  | ILDIS | 
	
		| Trifolium elizabethae Grossh. | Accepted |  | ILDIS | 
	
		| Trifolium elmeri Greene | Synonym |  | ILDIS | 
	
		| Trifolium elongatum Willd. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium endressii J.Gay ex Gren. & Godr. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium erectum Walter | Synonym |  | ILDIS | 
	
		| Trifolium erinaceum M.Bieb. | Synonym |  | ILDIS | 
	
		| Trifolium eriocephalum Torr. & A.Gray | Accepted |  | ILDIS | 
	
		| Trifolium eriocephalum Ledeb. | Synonym |  | ILDIS | 
	
		| Trifolium eriocephalum Nutt. | Unresolved |  | TRO | 
	
		| Trifolium eriocephalum subsp. arcuatum (Piper) J.M.Gillett | Accepted |  | ILDIS | 
	
		| Trifolium eriocephalum var. arcuatum (Piper) M.Peck | Synonym |  | ILDIS | 
	
		| Trifolium eriocephalum f. arcuatum (Piper) McDermott | Synonym |  | TRO | 
	
		| Trifolium eriocephalum var. butleri Jeps. | Synonym |  | ILDIS | 
	
		| Trifolium eriocephalum subsp. cusickii (Piper) J.M.Gillett | Accepted |  | ILDIS | 
	
		| Trifolium eriocephalum var. cusickii (Piper) J.S.Martin | Synonym |  | ILDIS | 
	
		| Trifolium eriocephalum subsp. eriocephalum Torr. & A.Gray | Accepted |  | ILDIS | 
	
		| Trifolium eriocephalum var. harneyense (Howell) McDermott | Synonym |  | ILDIS | 
	
		| Trifolium eriocephalum var. piperi J.S.Martin | Synonym |  | ILDIS | 
	
		| Trifolium eriocephalum subsp. villiferum (House) J.M.Gillett | Accepted |  | ILDIS | 
	
		| Trifolium eriocephalum var. villiferum (House) J.S.Martin | Synonym |  | ILDIS | 
	
		| Trifolium eriocephalum f. villiferum (House) McDermott | Synonym |  | TRO | 
	
		| Trifolium eriosphaerum Boiss. | Accepted |  | ILDIS | 
	
		| Trifolium erubescens Fenzl | Accepted |  | ILDIS | 
	
		| Trifolium erythraeum Schousb. ex Ball | Unresolved |  | WCSP (in review) | 
	
		| Trifolium erythranthum (Griseb.) Halacsy | Synonym |  | ILDIS | 
	
		| Trifolium euxinum Zohary | Unresolved |  | WCSP (in review) | 
	
		| Trifolium exile Greene | Synonym |  | ILDIS | 
	
		| Trifolium eximium DC. | Accepted |  | ILDIS | 
	
		| Trifolium eximium Stephan ex Ser. | Unresolved |  | TRO | 
	
		| Trifolium expansum Waldst. & Kit. | Synonym |  | ILDIS | 
	
		| Trifolium fabaceum Lindl. ex Steud. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium farayense Mouterde | Unresolved |  | WCSP (in review) | 
	
		| Trifolium fendleri Greene | Synonym |  | ILDIS | 
	
		| Trifolium filicaule Boiss. & Heldr. | Synonym |  | ILDIS | 
	
		| Trifolium filiforme L. | Synonym |  | ILDIS | 
	
		| Trifolium filiforme sensu auct. | Synonym |  | ILDIS | 
	
		| Trifolium filiforme var. dubium (Sibth.) Fiori & Paol. | Synonym |  | ILDIS | 
	
		| Trifolium filiforme subsp. dubium (Sibth.) Gams | Synonym |  | ILDIS | 
	
		| Trifolium filiforme var. dubium (Sibth.) Fiori & Paoletti | Synonym |  | TRO | 
	
		| Trifolium filipes Greene | Synonym |  | ILDIS | 
	
		| Trifolium fimbriatum Lindl. | Synonym |  | ILDIS | 
	
		| Trifolium fistulasuns Vaughan | Unresolved |  | TRO | 
	
		| Trifolium fistulosum A.E.Vaughan | Synonym |  | ILDIS | 
	
		| Trifolium fistulosum Gilib. | Synonym |  | ILDIS | 
	
		| Trifolium flavescens Tineo | Unresolved |  | WCSP (in review) | 
	
		| Trifolium flavicans Link | Unresolved |  | WCSP (in review) | 
	
		| Trifolium flavulum Greene | Synonym |  | ILDIS | 
	
		| Trifolium flavum C. Presl | Synonym |  | TRO | 
	
		| Trifolium fleischeri Steud. & Hochst. ex C.Presl | Unresolved |  | WCSP (in review) | 
	
		| Trifolium flexicaule Vill. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium flexuosum Jacq. | Synonym |  | ILDIS | 
	
		| Trifolium flexuosum subsp. heldreichianum Gibelli & Belli | Synonym |  | ILDIS | 
	
		| Trifolium fluminense Vell. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium foliosum Miniaev | Accepted |  | TRO | 
	
		| Trifolium folliculatum Lam. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium fontanum Bobrov | Accepted |  | ILDIS | 
	
		| Trifolium formosum d'Urv. | Synonym |  | ILDIS | 
	
		| Trifolium fragiferum L. | Accepted |  | ILDIS | 
	
		| Trifolium fragiferum subsp. bonannii (C.Presl) Sojak | Accepted |  | ILDIS | 
	
		| Trifolium fragiferum subsp. pulchellum (Lange) Ponert | Accepted |  | TRO | 
	
		| Trifolium fragiferum var. pulchellum Lange | Synonym |  | TRO | 
	
		| Trifolium franciscanum Greene | Synonym |  | ILDIS | 
	
		| Trifolium franciscanum var. truncatum Greene | Synonym |  | ILDIS | 
	
		| Trifolium friscanum (S.L. Welsh) S.L. Welsh | Accepted |  | TRO | 
	
		| Trifolium fruticans L. | Synonym |  | ILDIS | 
	
		| Trifolium fucatum Lindl. | Accepted |  | ILDIS | 
	
		| Trifolium fucatum var. flavulum (Greene) Jeps. | Synonym |  | ILDIS | 
	
		| Trifolium fucatum var. gambellii (Nutt.) Jeps. | Synonym |  | ILDIS | 
	
		| Trifolium fucatum var. virescens (Greene) Jeps. | Synonym |  | ILDIS | 
	
		| Trifolium fucatum f. virescens (Greene) McDermott | Synonym |  | TRO | 
	
		| Trifolium furcatum Hook. & Arn. | Synonym |  | ILDIS | 
	
		| Trifolium fuscum Desv. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium galilaeum Eig | Unresolved |  | WCSP (in review) | 
	
		| Trifolium galilaeum Boiss. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium gambelii Nutt. | Synonym |  | ILDIS | 
	
		| Trifolium geldreichianum Hausskn. | Unresolved |  | TRO | 
	
		| Trifolium gemellum Willd. | Accepted |  | ILDIS | 
	
		| Trifolium gemellum subsp. atlanticum (Ball) Dobignard | Accepted |  | TRO | 
	
		| Trifolium geminiflorum Greene | Synonym |  | ILDIS | 
	
		| Trifolium germaniciae Post ex Gibelli & Belli | Unresolved |  | TRO | 
	
		| Trifolium gibbosum Nègre | Unresolved |  | WCSP (in review) | 
	
		| Trifolium gillettianum Jacq.-Fel. | Accepted |  | ILDIS | 
	
		| Trifolium glabellum C.Presl | Unresolved |  | WCSP (in review) | 
	
		| Trifolium glabrum J.Gay ex Nyman | Unresolved |  | WCSP (in review) | 
	
		| Trifolium glaciale Reyner ex J.F.Gmel. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium glaciale Porc. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium glanduliferum Boiss. | Accepted |  | ILDIS | 
	
		| Trifolium glanduliferum var. nervulosum (Boiss. & Heldr.) Zohary | Accepted |  | ILDIS | 
	
		| Trifolium glanduliferum subsp. nervulosum (Boiss. & Heldr.) Ponert | Synonym |  | ILDIS | 
	
		| Trifolium glareosum (Ser.) Boiss. | Synonym |  | ILDIS | 
	
		| Trifolium glaucescens Hausskn. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium glaucum Hausskn. ex Nyman | Unresolved |  | WCSP (in review) | 
	
		| Trifolium globosum L. | Accepted |  | ILDIS | 
	
		| Trifolium globosum sensu auct. | Synonym |  | ILDIS | 
	
		| Trifolium globosum subsp. eriosphaerum (Boiss.) Gibelli & Belli | Synonym |  | TRO | 
	
		| Trifolium globosum var. eriosphaerum (Boiss.) POST | Accepted |  | TRO | 
	
		| Trifolium globosum subsp. meduseum (Blanche ex Boiss.) Gibelli & Belli | Synonym |  | TRO | 
	
		| Trifolium globosum var. meduseum (Blanche ex Boiss.) POST | Accepted |  | TRO | 
	
		| Trifolium glomeratum L. | Accepted |  | ILDIS | 
	
		| Trifolium goetzenii Engl. | Synonym |  | ILDIS | 
	
		| Trifolium goniocarpum Lojac. | Synonym |  | ILDIS | 
	
		| Trifolium gordeievii (Kom.) E.Small | Unresolved |  | WCSP (in review) | 
	
		| Trifolium gordejevii (Kom.) Z.Wei | Accepted |  | ILDIS | 
	
		| Trifolium gordejevii (Kom.) N.S.Pavlova | Synonym |  | ILDIS | 
	
		| Trifolium gracile Thuill. | Synonym |  | ILDIS | 
	
		| Trifolium gracilentum Torr. & A.Gray | Accepted |  | ILDIS | 
	
		| Trifolium gracilentum var. exile (Greene) P.B.Kenn. | Synonym |  | ILDIS | 
	
		| Trifolium gracilentum var. gracilentum Torr. & A.Gray | Accepted |  | ILDIS | 
	
		| Trifolium gracilentum var. inconspicuum Fernald | Synonym |  | ILDIS | 
	
		| Trifolium gracilentum var. palmeri (S.Watson) McDermott | Accepted |  | ILDIS | 
	
		| Trifolium gracilentum var. reductum Parish | Synonym |  | ILDIS | 
	
		| Trifolium graecum Griseb. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium grandiflorum Hook. & Arn. | Synonym |  | ILDIS | 
	
		| Trifolium grandiflorum Schreb. | Accepted |  | ILDIS | 
	
		| Trifolium grandiflorum Ledeb. | Synonym |  | ILDIS | 
	
		| Trifolium grantianum A.Heller | Synonym |  | ILDIS | 
	
		| Trifolium grayi Lojac. | Synonym |  | ILDIS | 
	
		| Trifolium greenei House | Synonym |  | ILDIS | 
	
		| Trifolium grossheimii Khalilov | Synonym |  | ILDIS | 
	
		| Trifolium guestii Blakelock | Synonym |  | ILDIS | 
	
		| Trifolium guianensis Aubl. | Synonym |  | ILDIS | 
	
		| Trifolium gussonei Tineo | Unresolved |  | WCSP (in review) | 
	
		| Trifolium guyanense Aubl. [Spelling variant] | Synonym |  | ILDIS | 
	
		| Trifolium gymnocarpon Torr. & A.Gray | Accepted |  | ILDIS | 
	
		| Trifolium gymnocarpon Sensu J.M.Gillet | Misapplied |  | ILDIS | 
	
		| Trifolium gymnocarpon Nutt. | Unresolved |  | TRO | 
	
		| Trifolium gymnocarpon var. lemmonii (S.Watson) McDermott | Synonym |  | ILDIS | 
	
		| Trifolium gymnocarpon var. plummerae (S.Watson) J.S.Martin | Accepted |  | ILDIS | 
	
		| Trifolium gymnocarpon subsp. plummerae (S.Watson) J.M.Gillett | Synonym |  | ILDIS | 
	
		| Trifolium gymnocarpon f. plummerae (S. Watson) McDermott | Synonym |  | TRO | 
	
		| Trifolium gymnocarpon var. subcaulescens (A.Gray) A.Nelson | Synonym |  | ILDIS | 
	
		| Trifolium gymnocarpum Nutt. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium hallii Howell | Synonym |  | ILDIS | 
	
		| Trifolium hamosum M.Bieb. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium hansenii Greene | Synonym |  | ILDIS | 
	
		| Trifolium harneyensis Howell | Synonym |  | ILDIS | 
	
		| Trifolium haussknechtii Boiss. | Accepted |  | ILDIS | 
	
		| Trifolium haydenii Porter | Accepted |  | ILDIS | 
	
		| Trifolium haydenii Sensu Zohary & D.Heller | Misapplied |  | ILDIS | 
	
		| Trifolium haydenii var. barnebyi Isely | Synonym |  | ILDIS | 
	
		| Trifolium haynaldianum Pant. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium haynaldii Meynh. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium hedysaroides Pall. | Synonym |  | ILDIS | 
	
		| Trifolium heldreichianum Hausskn. | Accepted |  | ILDIS | 
	
		| Trifolium helleri P.B.Kenn. | Synonym |  | ILDIS | 
	
		| Trifolium hemsleyi Lojac. | Synonym |  | ILDIS | 
	
		| Trifolium hervieri Freyn | Synonym |  | ILDIS | 
	
		| Trifolium heterodon Torr. & A.Gray | Synonym |  | ILDIS | 
	
		| Trifolium heterophyllum Tratt. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium hexanthum A.Heller | Synonym |  | ILDIS | 
	
		| Trifolium hirsutum E.Mey. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium hirsutum Thunb. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium hirtum All. | Accepted |  | ILDIS | 
	
		| Trifolium hispidissimum Michx. ex Steud. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium hispidum Desf. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium hohenackeri Jaub. & Spach | Unresolved |  | WCSP (in review) | 
	
		| Trifolium howellii S.Watson | Accepted |  | ILDIS | 
	
		| Trifolium howellii var. latifolium (Hook.) McDermott | Synonym |  | ILDIS | 
	
		| Trifolium humberti Dumaz-le Grand | Unresolved |  | TRO | 
	
		| Trifolium humboldtianum A.Braun & Asch. | Synonym |  | ILDIS | 
	
		| Trifolium humboldtianum Trautv. | Synonym |  | ILDIS | 
	
		| Trifolium humboldtii Spreng. | Synonym |  | ILDIS | 
	
		| Trifolium humile Ball | Synonym |  | ILDIS | 
	
		| Trifolium humillimum Sennen | Unresolved |  | WCSP (in review) | 
	
		| Trifolium hybridum L. | Accepted |  | ILDIS | 
	
		| Trifolium hybridum var. anatolicum (Boiss.) Boiss. | Synonym |  | ILDIS | 
	
		| Trifolium hybridum subsp. anatolicum (Boiss.) Hossain | Accepted |  | ILDIS | 
	
		| Trifolium hybridum var. elegans (Savi) Boiss. | Synonym |  | ILDIS | 
	
		| Trifolium hybridum subsp. elegans (Savi) Asch. & Graebn. | Accepted |  | ILDIS | 
	
		| Trifolium hybridum subsp. fistulosum (Rouy & Foucaud) Asch. & Graebn | Synonym |  | ILDIS | 
	
		| Trifolium hybridum var. hybridum L. | Synonym |  | ILDIS | 
	
		| Trifolium hybridum subsp. hybridum L. | Accepted |  | ILDIS | 
	
		| Trifolium hybridum var. pratense Rabenh. | Synonym |  | ILDIS | 
	
		| Trifolium hydrophilum Greene | Synonym |  | ILDIS | 
	
		| Trifolium hygrophilum Boiss. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium idahoense L.F.Hend. | Synonym |  | ILDIS | 
	
		| Trifolium inaequale Rydb. | Synonym |  | ILDIS | 
	
		| Trifolium incanum C.Presl | Synonym |  | ILDIS | 
	
		| Trifolium incarnatum L. | Accepted |  | ILDIS | 
	
		| Trifolium incarnatum var. incarnatum L. | Synonym |  | ILDIS | 
	
		| Trifolium incarnatum subsp. incarnatum L. | Accepted |  | ILDIS | 
	
		| Trifolium incarnatum var. molineri (Balb. ex Hornem.) DC. | Synonym |  | ILDIS | 
	
		| Trifolium incarnatum var. molinerii (Hornem.) Ser. | Synonym |  | ILDIS | 
	
		| Trifolium incarnatum subsp. molinerii (Hornem.) Syme | Accepted |  | ILDIS | 
	
		| Trifolium inconspicuum (Fernald) A.Heller | Synonym |  | ILDIS | 
	
		| Trifolium inconspicuum Poepp. ex D. Heller | Synonym |  | TRO | 
	
		| Trifolium indecorum Clos | Synonym |  | ILDIS | 
	
		| Trifolium indica L. [Spelling variant] | Synonym |  | ILDIS | 
	
		| Trifolium indicum L. | Synonym |  | ILDIS | 
	
		| Trifolium infamia-ponertii Greuter | Accepted |  | ILDIS | 
	
		| Trifolium insularum P.B.Kenn. | Synonym |  | ILDIS | 
	
		| Trifolium intermedium Guss. | Synonym |  | ILDIS | 
	
		| Trifolium intertextum (L.) Wender. ex Steud. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium intertextum Wender. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium involucratum Sm. | Synonym |  | ILDIS | 
	
		| Trifolium involucratum Ortega | Synonym |  | ILDIS | 
	
		| Trifolium involucratum Kunth | Synonym |  | TRO | 
	
		| Trifolium involucratum var. arizonicum (Greene) McDermott | Synonym |  | ILDIS | 
	
		| Trifolium involucratum var. fendleri (Greene) McDermott | Synonym |  | ILDIS | 
	
		| Trifolium involucratum var. fimbriatum (Lindl.) McDermott | Synonym |  | ILDIS | 
	
		| Trifolium involucratum var. kennedianum McDermott | Synonym |  | ILDIS | 
	
		| Trifolium irregulare Pourr. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium isodon Murb. | Synonym |  | ILDIS | 
	
		| Trifolium israeliticum D.Zohary & Katzn. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium issajevii Khalilov | Synonym |  | ILDIS | 
	
		| Trifolium isthmocarpum Brot. | Accepted |  | ILDIS | 
	
		| Trifolium isthmocarpum subsp. jaminianum (Boiss.) Murb. | Accepted |  | ILDIS | 
	
		| Trifolium italicum L. | Synonym |  | ILDIS | 
	
		| Trifolium jaminianum Boiss. | Synonym |  | ILDIS | 
	
		| Trifolium × jankae Soó | Unresolved |  | WCSP (in review) | 
	
		| Trifolium × joachinii Sennen & Mauricio | Unresolved |  | WCSP (in review) | 
	
		| Trifolium johnstonii Oliv. | Synonym |  | ILDIS | 
	
		| Trifolium johnstonii sensu Edwards & Bogdan | Misapplied |  | ILDIS | 
	
		| Trifolium jokerstii Vincent & Rand.Morgan | Unresolved |  | WCSP (in review) | 
	
		| Trifolium judaicum Eig | Unresolved |  | WCSP (in review) | 
	
		| Trifolium juliani Batt. | Accepted |  | ILDIS | 
	
		| Trifolium karatavicum Pavlov | Synonym |  | ILDIS | 
	
		| Trifolium kennedianum (McDermott) A.Nelson & J.F.Macb | Synonym |  | ILDIS | 
	
		| Trifolium kennedianum (McDermott) A. Nelson & J.F. Macbr. | Synonym |  | TRO | 
	
		| Trifolium kilimandscharicum Taub. | Synonym |  | ILDIS | 
	
		| Trifolium kingii S.Watson | Accepted |  | ILDIS | 
	
		| Trifolium kingii var. brandegei (S.Watson) McDermott | Synonym |  | ILDIS | 
	
		| Trifolium kingii subsp. dedeckerae (J.M.Gillett) D.Heller | Accepted |  | ILDIS | 
	
		| Trifolium kingii subsp. macilentum (Greene) J.M.Gillett | Accepted |  | ILDIS | 
	
		| Trifolium kingii var. macilentum (Greene) Isely | Synonym |  | ILDIS | 
	
		| Trifolium kingii subsp. productum (Greene) D.Heller | Accepted |  | ILDIS | 
	
		| Trifolium kingii var. productum (Greene) Jeps. | Synonym |  | ILDIS | 
	
		| Trifolium kingii subsp. rollinsii (J.M.Gillett) D.Heller | Accepted |  | ILDIS | 
	
		| Trifolium kitaibelianum Ser. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium kochianum Hayne | Unresolved |  | WCSP (in review) | 
	
		| Trifolium lacerum Greene | Synonym |  | ILDIS | 
	
		| Trifolium laciniatum Greene | Synonym |  | ILDIS | 
	
		| Trifolium laciniatum var. angustatum Greene | Synonym |  | ILDIS | 
	
		| Trifolium laevigatum Desf. | Synonym |  | ILDIS | 
	
		| Trifolium laevigatum Poir. | Synonym |  | ILDIS | 
	
		| Trifolium lagascanum Ser. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium lagopinum St.-Lag. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium lagopinum Jord. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium lagopus Willd. | Synonym |  | ILDIS | 
	
		| Trifolium lagrangei Boiss. | Synonym |  | ILDIS | 
	
		| Trifolium laguroides Pourr. ex Link | Unresolved |  | WCSP (in review) | 
	
		| Trifolium lanceolatum (J.B.Gillett) J.B.Gillett | Accepted |  | ILDIS | 
	
		| Trifolium lappaceum L. | Accepted |  | ILDIS | 
	
		| Trifolium lappaceum subsp. lappaceum L. | Accepted |  | ILDIS | 
	
		| Trifolium lasiocephalum Link | Unresolved |  | WCSP (in review) | 
	
		| Trifolium latifolium (Hook.) Greene | Accepted |  | ILDIS | 
	
		| Trifolium latinum Sebast. | Accepted |  | ILDIS | 
	
		| Trifolium laxiusculum Boiss. & Blanche | Unresolved |  | WCSP (in review) | 
	
		| Trifolium lechleri Phil. | Synonym |  | ILDIS | 
	
		| Trifolium leibergii A.Nelson & J.F.Macbr. | Accepted |  | ILDIS | 
	
		| Trifolium leiocalycinum Boiss. & Spruner | Synonym |  | ILDIS | 
	
		| Trifolium lemmonii S.Watson | Accepted |  | ILDIS | 
	
		| Trifolium lenkoranicum (Grossh.) Roskov | Synonym |  | ILDIS | 
	
		| Trifolium leptocephalum Wallr. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium leucanthum M.Bieb. | Accepted |  | ILDIS | 
	
		| Trifolium leucophaeum Schousb. ex Ball | Unresolved |  | WCSP (in review) | 
	
		| Trifolium leucotrichum Petrovic | Unresolved |  | WCSP (in review) | 
	
		| Trifolium libanoticum Ehrenb. ex Sweet | Unresolved |  | WCSP (in review) | 
	
		| Trifolium ligusticum Loisel. | Accepted |  | ILDIS | 
	
		| Trifolium lilacinum Rydb. | Synonym |  | ILDIS | 
	
		| Trifolium lilacinum Greene | Synonym |  | ILDIS | 
	
		| Trifolium limonium Phil. | Synonym |  | TRO | 
	
		| Trifolium lineare Greene | Unresolved |  | WCSP (in review) | 
	
		| Trifolium lineare var. filifolium (Zohary) Hendrych | Unresolved |  | TRO | 
	
		| Trifolium litigiosum Desv. | Synonym |  | TRO | 
	
		| Trifolium litorale Larrañaga | Unresolved |  | WCSP (in review) | 
	
		| Trifolium littorale Jord. ex Boreau | Unresolved |  | WCSP (in review) | 
	
		| Trifolium litwinowii Iljin | Synonym |  | ILDIS | 
	
		| Trifolium lividum Rydb. | Synonym |  | ILDIS | 
	
		| Trifolium loiseleurii Rouy | Unresolved |  | WCSP (in review) | 
	
		| Trifolium loisleuri Rouy | Synonym |  | ILDIS | 
	
		| Trifolium longicaule Wooton & Standl. | Synonym |  | ILDIS | 
	
		| Trifolium longidentatum Nábelek | Unresolved |  | WCSP (in review) | 
	
		| Trifolium longifoliolum (Hemsl.) House | Accepted |  | TRO | 
	
		| Trifolium longifolium House | Unresolved |  | WCSP (in review) | 
	
		| Trifolium longipedunculatum Steud. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium longipes Torr. & A.Gray | Accepted |  | ILDIS | 
	
		| Trifolium longipes Nutt. | Unresolved |  | TRO | 
	
		| Trifolium longipes subsp. atrorubens (Greene) J.M.Gillett | Accepted |  | ILDIS | 
	
		| Trifolium longipes var. atrorubens (Greene) Jeps. | Synonym |  | ILDIS | 
	
		| Trifolium longipes f. atrorubens (Greene) McDermott | Synonym |  | TRO | 
	
		| Trifolium longipes var. brachypus S.Watson | Synonym |  | ILDIS | 
	
		| Trifolium longipes subsp. caurinum (Piper) J.M.Gillett | Synonym |  | ILDIS | 
	
		| Trifolium longipes f. caurinum (Piper) McDermott | Synonym |  | TRO | 
	
		| Trifolium longipes subsp. elmeri (Greene) J.M.Gillett | Accepted |  | ILDIS | 
	
		| Trifolium longipes var. elmeri (Greene) McDermott | Synonym |  | ILDIS | 
	
		| Trifolium longipes subsp. hansenii (Greene) J.M.Gillett | Accepted |  | ILDIS | 
	
		| Trifolium longipes var. hansenii (Greene) Jeps. | Synonym |  | ILDIS | 
	
		| Trifolium longipes f. hansenii (Greene) McDermott | Synonym |  | TRO | 
	
		| Trifolium longipes var. latifolium Hook. | Synonym |  | ILDIS | 
	
		| Trifolium longipes var. multiovulatum (L.F.Hend.) C.L.Hitchc. | Synonym |  | ILDIS | 
	
		| Trifolium longipes subsp. multipedunculatum (P.B.Kenn.) J.M.Gillett | Synonym |  | ILDIS | 
	
		| Trifolium longipes var. multipedunculatum (P.B.Kenn.) Isely | Synonym |  | ILDIS | 
	
		| Trifolium longipes var. neurophyllum (Greene) Isely | Synonym |  | ILDIS | 
	
		| Trifolium longipes f. neurophyllum (Greene) McDermott | Synonym |  | TRO | 
	
		| Trifolium longipes var. nevadense Jeps. | Synonym |  | ILDIS | 
	
		| Trifolium longipes subsp. oreganum (Howell) J.M.Gillett | Synonym |  | ILDIS | 
	
		| Trifolium longipes var. oreganum (Howell) Isely | Synonym |  | ILDIS | 
	
		| Trifolium longipes var. pedunculatum (Rydb.) Isely | Synonym |  | ILDIS | 
	
		| Trifolium longipes var. pedunculatum (Rydb.) C.L. Hitchc. | Synonym |  | TRO | 
	
		| Trifolium longipes subsp. pendunculatum (Rydb.) J.M.Gillett | Accepted |  | ILDIS | 
	
		| Trifolium longipes var. pygmaeum A.Gray | Synonym |  | ILDIS | 
	
		| Trifolium longipes subsp. pygmaeum (A.Gray) J.M.Gillett | Synonym |  | ILDIS | 
	
		| Trifolium longipes var. reflexum A.Nelson | Synonym |  | ILDIS | 
	
		| Trifolium longipes subsp. reflexum (A.Nelson) J.M.Gillett | Synonym |  | ILDIS | 
	
		| Trifolium longipes var. rusbyi (Greene) H.D.Harr. | Synonym |  | ILDIS | 
	
		| Trifolium longipes var. shastense (House) Jeps. | Synonym |  | ILDIS | 
	
		| Trifolium longipes subsp. shastense (House) J.M.Gillett | Synonym |  | ILDIS | 
	
		| Trifolium longisetum Boiss. & Balansa | Synonym |  | ILDIS | 
	
		| Trifolium longistipulatum Ebel | Unresolved |  | WCSP (in review) | 
	
		| Trifolium longistipulatum Loisel. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium lozani House | Synonym |  | ILDIS | 
	
		| Trifolium lucanicum Guss. | Accepted |  | ILDIS | 
	
		| Trifolium lucanicum Gasp. | Synonym |  | TRO | 
	
		| Trifolium lucidum Schousb. ex Ball | Unresolved |  | WCSP (in review) | 
	
		| Trifolium ludovicianum Raf. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium lugardii Bullock | Accepted |  | ILDIS | 
	
		| Trifolium lupinaster L. | Accepted |  | ILDIS | 
	
		| Trifolium lupinaster var. albiflorum Ser. | Synonym |  | ILDIS | 
	
		| Trifolium lupinaster f. albiflorum (Ser.) P.Y. Fu & Y.A. Chen | Synonym |  | TRO | 
	
		| Trifolium lupinaster subsp. angustifolium (Litv.) Bobrov | Accepted |  | ILDIS | 
	
		| Trifolium lupinaster subsp. lupinaster L. | Accepted |  | ILDIS | 
	
		| Trifolium lupinaster var. lupinaster L. | Synonym |  | ILDIS | 
	
		| Trifolium lupinaster var. oblongifolia Ser. | Synonym |  | ILDIS | 
	
		| Trifolium lupinaster var. obtusifolium Belli | Synonym |  | ILDIS | 
	
		| Trifolium lupinaster var. pumilum Popov | Synonym |  | ILDIS | 
	
		| Trifolium lupinaster var. purpurascens Ledeb. | Synonym |  | ILDIS | 
	
		| Trifolium lupinastrum St.-Lag. | Synonym |  | ILDIS | 
	
		| Trifolium lupulinum Gueldenst. ex Ledeb. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium lupulinum Bubani | Unresolved |  | WCSP (in review) | 
	
		| Trifolium lupulinum (L.) Savi | Unresolved |  | WCSP (in review) | 
	
		| Trifolium luteolum Schur | Synonym |  | TRO | 
	
		| Trifolium luteum Lam. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium luxurians Steud. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium macilentum Greene | Synonym |  | ILDIS | 
	
		| Trifolium macilentum var. dedeckerae (J.M.Gillett) Barneby | Synonym |  | ILDIS | 
	
		| Trifolium macilentum var. rollinsii (J.M.Gillett) Barneby | Synonym |  | ILDIS | 
	
		| Trifolium macraei Hook. & Arn. | Accepted |  | ILDIS | 
	
		| Trifolium macraei var. albopurpureum (Torr. & A.Gray) Greene | Synonym |  | ILDIS | 
	
		| Trifolium macraei f. catalinae (S. Watson) McDermott | Synonym |  | TRO | 
	
		| Trifolium macraei var. dichotomum (Hook. & Arn.) S.Watson | Synonym |  | ILDIS | 
	
		| Trifolium macrocalyx Hook. | Synonym |  | ILDIS | 
	
		| Trifolium macrocephalum (Pursh) Poir. | Accepted |  | ILDIS | 
	
		| Trifolium macrocephalum var. caeruleomontanum St.John | Synonym |  | ILDIS | 
	
		| Trifolium macropodum Guss. | Synonym |  | ILDIS | 
	
		| Trifolium macrorrhisum Waldst. & Kit. | Unresolved |  | TRO | 
	
		| Trifolium macrorrhizum Ulbr. | Synonym |  | ILDIS | 
	
		| Trifolium macrorrhizum Boiss. | Synonym |  | TRO | 
	
		| Trifolium maculatum Host | Unresolved |  | WCSP (in review) | 
	
		| Trifolium magellanicum Poir. | Synonym |  | TRO | 
	
		| Trifolium magnum Gueldenst. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium majus Greene | Synonym |  | ILDIS | 
	
		| Trifolium malacanthum Link | Unresolved |  | WCSP (in review) | 
	
		| Trifolium marginatum (Baker) Cufod. | Synonym |  | ILDIS | 
	
		| Trifolium maritimum Huds. | Synonym |  | ILDIS | 
	
		| Trifolium maritimum subsp. cinctum (DC.) Gibelli & Belli | Synonym |  | ILDIS | 
	
		| Trifolium marschalii Rouy | Synonym |  | ILDIS | 
	
		| Trifolium marsicum Ten. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium masaiense J.B.Gillett | Accepted |  | ILDIS | 
	
		| Trifolium matthewsii A.Gray | Synonym |  | ILDIS | 
	
		| Trifolium mattirolianum Chiov. | Accepted |  | ILDIS | 
	
		| Trifolium mauginianum Fiori | Synonym |  | ILDIS | 
	
		| Trifolium mauritanicum Ball | Synonym |  | ILDIS | 
	
		| Trifolium mazanderanicum Rech.f. | Accepted |  | ILDIS | 
	
		| Trifolium mediterraneum Vell. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium medium L. | Accepted |  | ILDIS | 
	
		| Trifolium medium var. banaticum Heuff. | Synonym |  | ILDIS | 
	
		| Trifolium medium subsp. banaticum (Heuff.) Hendrych | Accepted |  | ILDIS | 
	
		| Trifolium medium var. bithynicum (Boiss.) N.Busch | Synonym |  | ILDIS | 
	
		| Trifolium medium subsp. eriocalycinum (Hausskn.) Ponert | Accepted |  | TRO | 
	
		| Trifolium medium var. eriocalycinum Hausskn. | Synonym |  | TRO | 
	
		| Trifolium medium subsp. sarosiense (Hazsl.) Simonk. | Accepted |  | ILDIS | 
	
		| Trifolium medium var. troitzkyi Grossh. | Synonym |  | ILDIS | 
	
		| Trifolium meduanense L.Mercier & H.Lév. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium meduseum Blanche ex Boiss. | Synonym |  | TRO | 
	
		| Trifolium megacephalum Nutt. | Synonym |  | ILDIS | 
	
		| Trifolium megalanthum Steud. | Synonym |  | ILDIS | 
	
		| Trifolium meironense Zohary & Lerner | Unresolved |  | WCSP (in review) | 
	
		| Trifolium melananthum Hook. & Arn. | Synonym |  | ILDIS | 
	
		| Trifolium melilotus L. | Synonym |  | TRO | 
	
		| Trifolium melilotus var. caeruleum L. | Synonym |  | TRO | 
	
		| Trifolium melilotus var. cretica L. | Synonym |  | TRO | 
	
		| Trifolium melilotus var. indicum L. | Synonym |  | TRO | 
	
		| Trifolium melilotus var. italica L. | Synonym |  | TRO | 
	
		| Trifolium melilotus var. officinalis L. | Synonym |  | TRO | 
	
		| Trifolium melilotus var. ornithopodioides L. | Synonym |  | TRO | 
	
		| Trifolium melilotus-altissimus C.C.Gmel. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium melilotus-dentatus Schreb. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium melilotus-hamosus M.Bieb. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium melilotus-indica L. | Synonym |  | ILDIS | 
	
		| Trifolium melilotus-italica Brot. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium melilotus-mauritanica Schousb. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium melilotus-officinalis L. | Synonym |  | ILDIS | 
	
		| Trifolium melilotus-officinarum Crantz | Unresolved |  | WCSP (in review) | 
	
		| Trifolium melilotus-ornithopodi (L.) Asch. & Graebn. | Synonym |  | ILDIS | 
	
		| Trifolium melilotus-ornithopodi subsp. uniflorum (Munby) Maire | Synonym |  | ILDIS | 
	
		| Trifolium melilotus-parviflorus M.Bieb. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium melilotus-segetalis Brot. | Unresolved |  | TRO | 
	
		| Trifolium meneghinianum Clementi | Synonym |  | ILDIS | 
	
		| Trifolium mercedense P.B.Kenn. | Synonym |  | ILDIS | 
	
		| Trifolium mesogitanum Boiss. | Synonym |  | ILDIS | 
	
		| Trifolium messanense L. | Synonym |  | ILDIS | 
	
		| Trifolium mexicanum Hemsl. | Synonym |  | ILDIS | 
	
		| Trifolium michelianum Savi | Accepted |  | ILDIS | 
	
		| Trifolium michelianum var. balansae (Boiss.) Azn. | Accepted |  | ILDIS | 
	
		| Trifolium michelianum var. michelianum Savi | Accepted |  | ILDIS | 
	
		| Trifolium micranthum Viv. | Accepted |  | ILDIS | 
	
		| Trifolium microcephalum Pursh | Accepted |  | ILDIS | 
	
		| Trifolium microcephalum var. lemmonii Lojac. | Synonym |  | ILDIS | 
	
		| Trifolium microcephalum f. velutinum McDermott | Synonym |  | TRO | 
	
		| Trifolium microdon Hook. & Arn. | Accepted |  | ILDIS | 
	
		| Trifolium microdon var. pilosum Eastw. | Synonym |  | ILDIS | 
	
		| Trifolium micropetalum E.Mey. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium microphyllum Desv. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium miegeanum Maire | Accepted |  | ILDIS | 
	
		| Trifolium minae Lojac. ex Ces., Pass. & Gibelli | Unresolved |  | WCSP (in review) | 
	
		| Trifolium minimum W.P.C.Barton | Unresolved |  | WCSP (in review) | 
	
		| Trifolium minus Sm. | Synonym |  | ILDIS | 
	
		| Trifolium minutiflorum Greene | Synonym |  | ILDIS | 
	
		| Trifolium minutissimum D.Heller & Zohary | Accepted |  | ILDIS | 
	
		| Trifolium minutum Coss. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium mirabile D.Heller & Zohary | Synonym |  | ILDIS | 
	
		| Trifolium mirabile Hook. ex D. Heller & Zoh. | Synonym |  | TRO | 
	
		| Trifolium modestum Boiss. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium molinerii Hornem. | Synonym |  | ILDIS | 
	
		| Trifolium molybdocalyx Rchb.f. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium monanthum A.Gray | Accepted |  | ILDIS | 
	
		| Trifolium monanthum var. eastwoodianum J.S.Martin | Accepted |  | ILDIS | 
	
		| Trifolium monanthum f. glabrifolium McDermott | Synonym |  | TRO | 
	
		| Trifolium monanthum var. grantianum (A.Heller) Parish | Accepted |  | ILDIS | 
	
		| Trifolium monanthum subsp. grantianum (A.Heller) J.M.Gillett | Synonym |  | ILDIS | 
	
		| Trifolium monanthum f. grantianum (A. Heller) McDermott | Synonym |  | TRO | 
	
		| Trifolium monanthum var. monanthum A.Gray | Accepted |  | ILDIS | 
	
		| Trifolium monanthum var. parvum (Kellogg) McDermott | Accepted |  | ILDIS | 
	
		| Trifolium monanthum subsp. parvum (Kellogg) J.M.Gillett | Synonym |  | ILDIS | 
	
		| Trifolium monanthum f. spatiosum McDermott | Synonym |  | TRO | 
	
		| Trifolium monanthum var. tenerum Sensu Parish | Misapplied |  | ILDIS | 
	
		| Trifolium monanthum subsp. tenerum (Eastw.) J.M.Gillett | Synonym |  | ILDIS | 
	
		| Trifolium monanthum var. tenerum (Eastw.) Parish | Synonym |  | TRO | 
	
		| Trifolium monoense Greene | Synonym |  | ILDIS | 
	
		| Trifolium montanense Rydb. | Synonym |  | ILDIS | 
	
		| Trifolium montanum L. | Accepted |  | ILDIS | 
	
		| Trifolium montanum subsp. gayanum (Gordon) O.Bolos & Vigo | Accepted |  | ILDIS | 
	
		| Trifolium montanum var. gayanum Gordon | Synonym |  | ILDIS | 
	
		| Trifolium montanum subsp. humboldtianum (A.Braun & Asch.) Hossain | Accepted |  | ILDIS | 
	
		| Trifolium montanum subsp. montanum L. | Accepted |  | ILDIS | 
	
		| Trifolium montanum subsp. rupestre (Ten.) Pignatti | Accepted |  | ILDIS | 
	
		| Trifolium moriferum Boiss. | Synonym |  | ILDIS | 
	
		| Trifolium morleyanum Greene | Synonym |  | ILDIS | 
	
		| Trifolium mucronatum Spreng. | Accepted |  | ILDIS | 
	
		| Trifolium mucronatum subsp. lacerum (Greene) J.M.Gillett | Accepted |  | ILDIS | 
	
		| Trifolium mucronatum subsp. mucronatum Spreng. | Accepted |  | ILDIS | 
	
		| Trifolium mucronatum subsp. vaughanae J.M.Gillett | Accepted |  | ILDIS | 
	
		| Trifolium multicaule M.E.Jones | Synonym |  | ILDIS | 
	
		| Trifolium multiflorum Greene | Unresolved |  | WCSP (in review) | 
	
		| Trifolium multinerve A.Rich. | Accepted |  | ILDIS | 
	
		| Trifolium multipedunculatum P.B.Kenn. | Synonym |  | ILDIS | 
	
		| Trifolium multistriatum Koch | Synonym |  | ILDIS | 
	
		| Trifolium munbyi Sirj. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium mutabile Port. | Accepted |  | ILDIS | 
	
		| Trifolium mutelii Gren. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium nanum Torr. | Accepted |  | ILDIS | 
	
		| Trifolium neglectum C.A.Mey. | Synonym |  | ILDIS | 
	
		| Trifolium nelsoni House | Synonym |  | ILDIS | 
	
		| Trifolium nemorale Greene | Synonym |  | ILDIS | 
	
		| Trifolium nemorosum Gaterau | Unresolved |  | WCSP (in review) | 
	
		| Trifolium neolagopus Lojac. | Synonym |  | ILDIS | 
	
		| Trifolium nervosum C.Presl | Unresolved |  | WCSP (in review) | 
	
		| Trifolium nervulosum Boiss. & Heldr. | Synonym |  | ILDIS | 
	
		| Trifolium neurophyllum Greene | Synonym |  | ILDIS | 
	
		| Trifolium nevadense Boiss. | Synonym |  | ILDIS | 
	
		| Trifolium neyrautii Rouy | Unresolved |  | WCSP (in review) | 
	
		| Trifolium nidificum Griseb. | Synonym |  | ILDIS | 
	
		| Trifolium niethammeri Rothm. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium nigrescens Viv. | Accepted |  | ILDIS | 
	
		| Trifolium nigrescens subsp. petrisavii (Clementi) Holmboe | Accepted |  | ILDIS | 
	
		| Trifolium nigrocinctum Boiss. & Orph. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium nigrolineatum Wahlenb. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium nigropunctatum G.Don | Unresolved |  | WCSP (in review) | 
	
		| Trifolium nivale Arv.-Touv. | Synonym |  | ILDIS | 
	
		| Trifolium noricum Wulfen | Accepted |  | ILDIS | 
	
		| Trifolium noricum var. ottonis (Boiss.) Zohary | Accepted |  | ILDIS | 
	
		| Trifolium noricum subsp. praetutianum (Guss.) Pign. | Accepted |  | TRO | 
	
		| Trifolium nothum Steven | Unresolved |  | WCSP (in review) | 
	
		| Trifolium nummulariifolium Perret ex Colla | Unresolved |  | TRO | 
	
		| Trifolium nuttallii Steud. | Synonym |  | ILDIS | 
	
		| Trifolium obcordatum Desv. | Synonym |  | ILDIS | 
	
		| Trifolium obcordatum var. beta Hook. & Arn. | Synonym |  | TRO | 
	
		| Trifolium oblongifolium Ser. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium obscurum Savi | Accepted |  | ILDIS | 
	
		| Trifolium obscurum subsp. aequidentatum (Pérez Lara) C.Vicioso | Unresolved |  | WCSP (in review) | 
	
		| Trifolium obtusiflorum Hook.f. | Accepted |  | ILDIS | 
	
		| Trifolium obtusiflorum Hook. | Unresolved |  | TRO | 
	
		| Trifolium obvallatum Moench | Unresolved |  | WCSP (in review) | 
	
		| Trifolium occidentale Coombe | Synonym |  | ILDIS | 
	
		| Trifolium ochreatum Steud. | Synonym |  | ILDIS | 
	
		| Trifolium ochroleucon Huds. | Accepted |  | ILDIS | 
	
		| Trifolium ochroleucon subsp. caucasicum (Tausch) Kozuharov | Synonym |  | ILDIS | 
	
		| Trifolium ochroleucon subsp. roseum (C.Presl) Guss. | Synonym |  | ILDIS | 
	
		| Trifolium ochroleucum Huds. [Spelling variant] | Synonym |  | ILDIS | 
	
		| Trifolium ochroleucum-magnum Gueldenst. ex Ledeb. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium odoratum Schrank | Unresolved |  | WCSP (in review) | 
	
		| Trifolium officinale L. | Synonym |  | ILDIS | 
	
		| Trifolium officinarum Garsault | Unresolved |  | WCSP (in review) | 
	
		| Trifolium oliganthum Steud. | Accepted |  | ILDIS | 
	
		| Trifolium oliganthum var. sonomense Greene | Synonym |  | ILDIS | 
	
		| Trifolium oliganthum var. trichocalyx (A.Heller) McDermott | Synonym |  | ILDIS | 
	
		| Trifolium oliganthum var. triflorum (Greene) Greene | Synonym |  | ILDIS | 
	
		| Trifolium olivaceum Greene | Synonym |  | ILDIS | 
	
		| Trifolium olivaceum var. columbinum (Greene) Jeps. | Synonym |  | ILDIS | 
	
		| Trifolium olivaceum f. columbinum (Greene) McDermott | Synonym |  | TRO | 
	
		| Trifolium olivaceum var. griseum Jeps. | Synonym |  | ILDIS | 
	
		| Trifolium oliverianum Ser. | Synonym |  | ILDIS | 
	
		| Trifolium olympicum Hornem. ex Hook. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium orbelicum Velen. | Synonym |  | ILDIS | 
	
		| Trifolium orbiculatum P.B.Kenn. & McDermott | Synonym |  | ILDIS | 
	
		| Trifolium oreganum Howell | Synonym |  | ILDIS | 
	
		| Trifolium oreganum f. brachypus (S. Watson) McDermott | Synonym |  | TRO | 
	
		| Trifolium oreganum var. multiovulatum L.F.Hend. | Synonym |  | ILDIS | 
	
		| Trifolium oreganum f. rusbyi (Greene) McDermott | Synonym |  | TRO | 
	
		| Trifolium oreganum var. rydbergii (Greene) McDermott | Synonym |  | ILDIS | 
	
		| Trifolium ornatum E.D.Clarke | Unresolved |  | WCSP (in review) | 
	
		| Trifolium ornithopodioides (L.) Sm. | Accepted |  | ILDIS | 
	
		| Trifolium orphanideum Boiss. | Synonym |  | ILDIS | 
	
		| Trifolium ortegae Greene | Synonym |  | ILDIS | 
	
		| Trifolium ortegae f. pumilum A.E. Vaughan | Synonym |  | TRO | 
	
		| Trifolium ottonis Boiss. | Synonym |  | ILDIS | 
	
		| Trifolium ovatifolium Bory & Chaub. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium owyheense Gilkey | Accepted |  | ILDIS | 
	
		| Trifolium oxaloides Bunge ex Nyman | Unresolved |  | WCSP (in review) | 
	
		| Trifolium oxyodon Rydb. | Synonym |  | ILDIS | 
	
		| Trifolium oxypetalum Fisch. & C.A.Mey. | Synonym |  | ILDIS | 
	
		| Trifolium oxypetasum Heldr. & Sart. ex Nyman | Unresolved |  | WCSP (in review) | 
	
		| Trifolium paccarinii Chiov. | Unresolved |  | TRO | 
	
		| Trifolium pachycalyx Zohary | Unresolved |  | WCSP (in review) | 
	
		| Trifolium pachypodum O.Schwarz | Unresolved |  | WCSP (in review) | 
	
		| Trifolium pacificum Bobrov | Synonym |  | ILDIS | 
	
		| Trifolium palaestinum Boiss. | Accepted |  | ILDIS | 
	
		| Trifolium palavicum Hochst. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium pallescens Schreb. | Accepted |  | ILDIS | 
	
		| Trifolium pallidulum Jord. | Synonym |  | ILDIS | 
	
		| Trifolium pallidum Waldst. & Kit. | Accepted |  | ILDIS | 
	
		| Trifolium palmeri S.Watson | Synonym |  | ILDIS | 
	
		| Trifolium pamphylicum Boiss. & Heldr. | Synonym |  | TRO | 
	
		| Trifolium pannonicum Jacq. | Accepted |  | ILDIS | 
	
		| Trifolium panormitanum C.Presl | Synonym |  | ILDIS | 
	
		| Trifolium panormitanum var. aequidentatum Pérez Lara | Unresolved |  | WCSP (in review) | 
	
		| Trifolium pantocsekii Gand. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium paradoxum Steud. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium parantzemae Azn. | Synonym |  | TRO | 
	
		| Trifolium parisiense DC. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium parnassii Boiss. & Spruner | Accepted |  | ILDIS | 
	
		| Trifolium parryi A.Gray | Accepted |  | ILDIS | 
	
		| Trifolium parryi subsp. montanense (Rydb.) J.M.Gillett | Accepted |  | ILDIS | 
	
		| Trifolium parryi var. montanense (Rydb.) Isely | Synonym |  | ILDIS | 
	
		| Trifolium parryi var. montanense (Rydb.) S.L. Welsh | Synonym |  | TRO | 
	
		| Trifolium parryi subsp. salictorum (Rydb.) J.M.Gillett | Accepted |  | ILDIS | 
	
		| Trifolium parviflorum sensu auct. | Misapplied |  | ILDIS | 
	
		| Trifolium parviflorum Ehrh. | Synonym |  | ILDIS | 
	
		| Trifolium parvifolium Bunge ex Nyman | Unresolved |  | WCSP (in review) | 
	
		| Trifolium parvulum G. Beck ex Stapf | Synonym |  | TRO | 
	
		| Trifolium parvum (Kellogg) A.Heller | Synonym |  | ILDIS | 
	
		| Trifolium patens Schreb. | Accepted |  | ILDIS | 
	
		| Trifolium patulum Tausch | Accepted |  | ILDIS | 
	
		| Trifolium pauciflorum Torr. & A.Gray | Synonym |  | ILDIS | 
	
		| Trifolium pauciflorum Steud. | Synonym |  | ILDIS | 
	
		| Trifolium pauciflorum Lojac. | Synonym |  | ILDIS | 
	
		| Trifolium pauciflorum d'Urv. | Accepted |  | ILDIS | 
	
		| Trifolium pauciflorum Nutt. | Synonym |  | TRO | 
	
		| Trifolium pauciflorum var. parvum Kellogg | Synonym |  | ILDIS | 
	
		| Trifolium pectinatum Willd. ex Steud. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium pedunculatum Rydb. | Synonym |  | ILDIS | 
	
		| Trifolium pennyanum Steud. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium pensylvanicum Willd. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium perpusillum Simonk. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium perretii Colla | Unresolved |  | WCSP (in review) | 
	
		| Trifolium perreymondii Gren. | Synonym |  | ILDIS | 
	
		| Trifolium peruvianum Vogel | Synonym |  | ILDIS | 
	
		| Trifolium peruvianum var. chiclense (BALL) J.F. Macbr. | Synonym |  | TRO | 
	
		| Trifolium petitianum A.Rich. | Synonym |  | ILDIS | 
	
		| Trifolium petitpierreanum Hayne | Unresolved |  | WCSP (in review) | 
	
		| Trifolium petraeum Greene | Synonym |  | ILDIS | 
	
		| Trifolium petrisavii Clementi | Synonym |  | ILDIS | 
	
		| Trifolium petrophilum C.F.Baker | Synonym |  | ILDIS | 
	
		| Trifolium petrophilum A.Heller | Synonym |  | ILDIS | 
	
		| Trifolium phaeocephalum Greene | Synonym |  | ILDIS | 
	
		| Trifolium philistaeum Zohary | Unresolved |  | WCSP (in review) | 
	
		| Trifolium philistaeum var. filifolium Zohary | Synonym |  | TRO | 
	
		| Trifolium philisticum Zoh. | Unresolved |  | TRO | 
	
		| Trifolium phitosianum N.Böhling, Greuter & Raus | Unresolved |  | WCSP (in review) | 
	
		| Trifolium phlebocalyx Fenzl ex Tchich. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium phleoides Willd. | Accepted |  | ILDIS | 
	
		| Trifolium phleoides subsp. audigieri Foucaud | Synonym |  | ILDIS | 
	
		| Trifolium phleoides subsp. gemellum (Willd.) Gibelli & Belli | Synonym |  | ILDIS | 
	
		| Trifolium physanthum Hook. & Arn. | Accepted |  | ILDIS | 
	
		| Trifolium physodes M.Bieb. | Accepted |  | ILDIS | 
	
		| Trifolium physodes var. physodes M.Bieb. | Accepted |  | ILDIS | 
	
		| Trifolium physodes var. psilocalyx Boiss. | Accepted |  | ILDIS | 
	
		| Trifolium physodes var. sericocalyx Gibelli & Belli | Synonym |  | ILDIS | 
	
		| Trifolium physopetalum Fisch. & C.A.Mey. | Synonym |  | ILDIS | 
	
		| Trifolium pichisermollii J.B.Gillett | Accepted |  | ILDIS | 
	
		| Trifolium pictum M.Bieb. | Synonym |  | ILDIS | 
	
		| Trifolium pignantii Fauche & Chaub. | Accepted |  | ILDIS | 
	
		| Trifolium pignati Steud. | Unresolved |  | TRO | 
	
		| Trifolium pilczii Adamovic | Accepted |  | ILDIS | 
	
		| Trifolium piliferum Straub. ex Nyman | Unresolved |  | WCSP (in review) | 
	
		| Trifolium piligerum (Rohlena) A.W.Hill | Unresolved |  | WCSP (in review) | 
	
		| Trifolium pilulare Boiss. | Accepted |  | ILDIS | 
	
		| Trifolium pinetorum Greene | Accepted |  | ILDIS | 
	
		| Trifolium platycephalum Bisch. | Synonym |  | ILDIS | 
	
		| Trifolium plebeium Boiss. | Accepted |  | ILDIS | 
	
		| Trifolium plicatum C.Presl ex Sweet | Unresolved |  | WCSP (in review) | 
	
		| Trifolium plummerae S.Watson | Synonym |  | ILDIS | 
	
		| Trifolium plumosum Hook. | Accepted |  | ILDIS | 
	
		| Trifolium plumosum subsp. amplifolium (J.S.Martin) J.M.Gillett | Accepted |  | ILDIS | 
	
		| Trifolium plumosum var. amplifolium J.S.Martin | Synonym |  | ILDIS | 
	
		| Trifolium polonica L. [Spelling variant] | Synonym |  | ILDIS | 
	
		| Trifolium polonicus L. | Synonym |  | ILDIS | 
	
		| Trifolium polyanthemum Ten. ex Ser. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium polycephalum Ser. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium polygonum H.Lév. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium polymorphum Poir. | Accepted |  | ILDIS | 
	
		| Trifolium polymorphum var. granfiflorum Parodi | Accepted |  | TRO | 
	
		| Trifolium polymorphum var. neuquenense Rossow | Accepted |  | TRO | 
	
		| Trifolium polynorphum Poir. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium polyodon Greene | Accepted |  | ILDIS | 
	
		| Trifolium polyphyllum Torr. & A.Gray | Synonym |  | ILDIS | 
	
		| Trifolium polyphyllum (C.A.Mey.) Latsch. | Accepted |  | ILDIS | 
	
		| Trifolium polyphyllum C.A. Mey. | Unresolved |  | TRO | 
	
		| Trifolium polyphyllum Nutt. | Synonym |  | TRO | 
	
		| Trifolium polystachyum Fresen. | Accepted |  | ILDIS | 
	
		| Trifolium ponticum Albov | Unresolved |  | WCSP (in review) | 
	
		| Trifolium popovii (Roskov) Gubanov & Kamelin | Synonym |  | ILDIS | 
	
		| Trifolium potosanum Lojac. | Synonym |  | ILDIS | 
	
		| Trifolium potosanum "Lojac., p.p.B" | Synonym |  | ILDIS | 
	
		| Trifolium praecox Wallr. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium praetermissum Greuter, Pleger & Raus | Unresolved |  | WCSP (in review) | 
	
		| Trifolium praetutianum Guss. | Synonym |  | TRO | 
	
		| Trifolium pratense L. | Accepted |  | ILDIS | 
	
		| Trifolium pratense var. americanum Harz | Accepted |  | ILDIS | 
	
		| Trifolium pratense subsp. americanum Soják | Synonym |  | TRO | 
	
		| Trifolium pratense subsp. expansum Jáv. | Synonym |  | TRO | 
	
		| Trifolium pratense var. foliosum Brand | Synonym |  | TRO | 
	
		| Trifolium pratense var. lenkoranicum Grossh. | Synonym |  | ILDIS | 
	
		| Trifolium pratense var. maritimum Zabel | Accepted |  | ILDIS | 
	
		| Trifolium pratense var. sativum Schreb. | Accepted |  | ILDIS | 
	
		| Trifolium pratense subsp. sativum Ponert | Synonym |  | TRO | 
	
		| Trifolium pratense subsp. sativum Schuebl. & Mart. | Synonym |  | TRO | 
	
		| Trifolium pratense var. villosum Wahlb. | Synonym |  | ILDIS | 
	
		| Trifolium praticola Sennen | Synonym |  | ILDIS | 
	
		| Trifolium preslianum Boiss. | Synonym |  | ILDIS | 
	
		| Trifolium preussii Baker f. | Synonym |  | ILDIS | 
	
		| Trifolium procerum Rochel | Synonym |  | ILDIS | 
	
		| Trifolium procumbens sensu auct. | Synonym |  | ILDIS | 
	
		| Trifolium procumbens "L., p.p." | Synonym |  | ILDIS | 
	
		| Trifolium procumbens L. | Synonym |  | ILDIS | 
	
		| Trifolium procumbens var. campestre DC. | Synonym |  | ILDIS | 
	
		| Trifolium productum Greene | Synonym |  | ILDIS | 
	
		| Trifolium prophetarum M.Hossain | Unresolved |  | WCSP (in review) | 
	
		| Trifolium × prostii Chass. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium pseudo-albopurpureum P.B.Kenn. | Synonym |  | ILDIS | 
	
		| Trifolium pseudobadium Velen. | Synonym |  | ILDIS | 
	
		| Trifolium pseudocryptopodium Fiori | Synonym |  | ILDIS | 
	
		| Trifolium pseudomedium Hausskn. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium pseudoprocumbens C.C.Gmel. | Synonym |  | ILDIS | 
	
		| Trifolium pseudostriatum Baker f. | Accepted |  | ILDIS | 
	
		| Trifolium psoralioides Walter | Synonym |  | TRO | 
	
		| Trifolium pulchellum Schischk. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium pumilum Hossain | Synonym |  | ILDIS | 
	
		| Trifolium purpurascens Fisch. ex G.Don | Unresolved |  | WCSP (in review) | 
	
		| Trifolium purpurascens Roth | Unresolved |  | WCSP (in review) | 
	
		| Trifolium purpureum Loisel. | Accepted |  | ILDIS | 
	
		| Trifolium purpureum subsp. pamphylicum (Boiss. & Heldr.) Holmboe | Synonym |  | TRO | 
	
		| Trifolium purpureum-majus Gilib. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium purseglovei J.B.Gillett | Accepted |  | ILDIS | 
	
		| Trifolium pusillum Greene | Synonym |  | ILDIS | 
	
		| Trifolium pyrenaicum Pourr. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium quartinianum A.Rich. | Accepted |  | ILDIS | 
	
		| Trifolium quercetorum Greene | Synonym |  | ILDIS | 
	
		| Trifolium raddeanum Trautv. | Accepted |  | ILDIS | 
	
		| Trifolium radiatum Delile | Unresolved |  | WCSP (in review) | 
	
		| Trifolium radicosum Boiss. & Hohen. | Accepted |  | ILDIS | 
	
		| Trifolium radiosum Wahlenb. | Synonym |  | ILDIS | 
	
		| Trifolium rechingeri Rothm. | Synonym |  | ILDIS | 
	
		| Trifolium reclinatum Waldst. & Kit. | Synonym |  | ILDIS | 
	
		| Trifolium rectiusculum Gand. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium recurvum Waldst. & Kit. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium reflexum L. | Accepted |  | ILDIS | 
	
		| Trifolium reflexum Scheele | Synonym |  | ILDIS | 
	
		| Trifolium reflexum Schltdl. & Cham. | Synonym |  | ILDIS | 
	
		| Trifolium reflexum var. reflexum L. | Accepted |  | ILDIS | 
	
		| Trifolium reflexum var. virginicum (Small & Vail) McDermott | Synonym |  | ILDIS | 
	
		| Trifolium repens L. | Accepted |  | ILDIS | 
	
		| Trifolium repens sensu Baker f. | Misapplied |  | ILDIS | 
	
		| Trifolium repens var. giganteum Lagr.-Foss. | Synonym |  | ILDIS | 
	
		| Trifolium repens subsp. giganteum (Lagr.-Fossat) Ponert | Synonym |  | TRO | 
	
		| Trifolium repens var. giganteum Lagr.-Fossat | Synonym |  | TRO | 
	
		| Trifolium repens subsp. macrorrhizum (Boiss.) Ponert | Accepted |  | TRO | 
	
		| Trifolium repens var. nevadense (Boiss.) C.Vicioso | Accepted |  | ILDIS | 
	
		| Trifolium repens subsp. nevadense (Boiss.) Coombe | Synonym |  | ILDIS | 
	
		| Trifolium repens subsp. ochranthum (K.Maly) Nyar. | Synonym |  | ILDIS | 
	
		| Trifolium repens var. ochranthum K.Maly | Accepted |  | ILDIS | 
	
		| Trifolium repens var. orbelicum (Velen.) Fritsch | Accepted |  | ILDIS | 
	
		| Trifolium repens subsp. orbelicum (Velen.) Pawl. | Synonym |  | ILDIS | 
	
		| Trifolium repens var. orphanideum (Boiss.) Boiss. | Accepted |  | ILDIS | 
	
		| Trifolium repens subsp. orphanideum (Boiss.) Coombe | Synonym |  | ILDIS | 
	
		| Trifolium repens subsp. prostratum Nyman | Accepted |  | ILDIS | 
	
		| Trifolium repens var. repens L. | Accepted |  | ILDIS | 
	
		| Trifolium repens subsp. repens L. | Synonym |  | ILDIS | 
	
		| Trifolium repens f. riparia Hauman | Synonym |  | TRO | 
	
		| Trifolium resupinatum L. | Accepted |  | ILDIS | 
	
		| Trifolium resupinatum var. majus Boiss. | Accepted |  | ILDIS | 
	
		| Trifolium resupinatum var. minus Boiss. | Synonym |  | ILDIS | 
	
		| Trifolium resupinatum subsp. suaveolens (Willd.) Ponert | Synonym |  | TRO | 
	
		| Trifolium resupinatum subsp. tomentosum (L.) Gibelli & Belli | Synonym |  | TRO | 
	
		| Trifolium retusum L. | Accepted |  | ILDIS | 
	
		| Trifolium retusum subsp. cernuum C.Vicioso & M.Lainz | Synonym |  | ILDIS | 
	
		| Trifolium × retyezaticum Nyár. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium rhizomatosum O.Schwarz | Unresolved |  | WCSP (in review) | 
	
		| Trifolium rhodense Pamp. | Synonym |  | ILDIS | 
	
		| Trifolium rhombeum S.Schauer | Synonym |  | ILDIS | 
	
		| Trifolium rigidum Savi | Synonym |  | TRO | 
	
		| Trifolium riograndense Burkart | Accepted |  | ILDIS | 
	
		| Trifolium rivale Steud. | Synonym |  | ILDIS | 
	
		| Trifolium rivale Clos | Synonym |  | ILDIS | 
	
		| Trifolium rivulare Boiss. & Balansa | Synonym |  | TRO | 
	
		| Trifolium rodnense Porcius | Unresolved |  | WCSP (in review) | 
	
		| Trifolium roemerianum Scheele | Synonym |  | ILDIS | 
	
		| Trifolium rollinsii J.M.Gillett | Synonym |  | ILDIS | 
	
		| Trifolium romanicum D.Brandza | Synonym |  | ILDIS | 
	
		| Trifolium romanicum Brandza | Synonym |  | TRO | 
	
		| Trifolium roscidum Greene | Synonym |  | ILDIS | 
	
		| Trifolium roseum D.Heller & Zohary | Synonym |  | ILDIS | 
	
		| Trifolium roseum J.Presl & C.Presl | Synonym |  | ILDIS | 
	
		| Trifolium roseum Cervants ex D. Heller & Zoh. | Synonym |  | TRO | 
	
		| Trifolium rostratum Greene | Synonym |  | ILDIS | 
	
		| Trifolium rotundatum Ser. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium rotundifolium Bory & Chaub. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium rotundifolium Sm. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium roussaeanum Boiss. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium rouxii Gren. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium rouyanum Bonnier | Unresolved |  | WCSP (in review) | 
	
		| Trifolium rubellum Jord. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium rubens L. | Accepted |  | ILDIS | 
	
		| Trifolium rubicundum Ball | Synonym |  | ILDIS | 
	
		| Trifolium rubrum Larrañaga | Synonym |  | TRO | 
	
		| Trifolium rueppellianum "sensu Robyns, p.p." | Misapplied |  | ILDIS | 
	
		| Trifolium rueppellianum Fresen. | Accepted |  | ILDIS | 
	
		| Trifolium rueppellianum var. lanceolatum J.B.Gillett | Synonym |  | ILDIS | 
	
		| Trifolium rueppellianum var. preussii (Baker f.) J.B.Gillett | Synonym |  | ILDIS | 
	
		| Trifolium rumelicum (Griseb.) Halacsy | Synonym |  | ILDIS | 
	
		| Trifolium rupestre Ten. | Synonym |  | ILDIS | 
	
		| Trifolium ruprechtii Tamamsch. & Fed. | Synonym |  | ILDIS | 
	
		| Trifolium rusbyi Greene | Accepted |  | ILDIS | 
	
		| Trifolium rusbyi var. atrorubens Greene | Synonym |  | ILDIS | 
	
		| Trifolium rusbyi subsp. caurinum (Piper) D.Heller & Zohary | Accepted |  | ILDIS | 
	
		| Trifolium rusbyi subsp. multipedunculatum (P.B.Kenn.) D.Heller & Zohary | Accepted |  | ILDIS | 
	
		| Trifolium rusbyi subsp. neurophyllum (Greene) D.Heller & Zohary | Accepted |  | ILDIS | 
	
		| Trifolium rusbyi subsp. oreganum (Howell) D.Heller & Zohary | Accepted |  | ILDIS | 
	
		| Trifolium rusbyi subsp. reflexum (A.Nelson) D.Heller & Zohary | Accepted |  | ILDIS | 
	
		| Trifolium rusbyi subsp. rusbyi Greene | Accepted |  | ILDIS | 
	
		| Trifolium rusbyi subsp. shastense (House) D.Heller & Zohary | Accepted |  | ILDIS | 
	
		| Trifolium ruthenicum M.Bieb. | Synonym |  | ILDIS | 
	
		| Trifolium rydbergii Greene | Synonym |  | ILDIS | 
	
		| Trifolium rytidosemium Boiss. & Hohen. | Synonym |  | ILDIS | 
	
		| Trifolium rytidosemium subsp. rivulare (Boiss. & Balansa) Ponert | Unresolved |  | TRO | 
	
		| Trifolium sabuletorum Jord. ex Boreau | Unresolved |  | WCSP (in review) | 
	
		| Trifolium sachokianum Grossh. | Synonym |  | ILDIS | 
	
		| Trifolium salictorum Rydb. | Synonym |  | ILDIS | 
	
		| Trifolium salmoneum Mouterde | Accepted |  | ILDIS | 
	
		| Trifolium sannineum Mouterde | Unresolved |  | WCSP (in review) | 
	
		| Trifolium sarosiense Hazsl. | Synonym |  | ILDIS | 
	
		| Trifolium sativum (Schreb.) Crome | Synonym |  | ILDIS | 
	
		| Trifolium sativum subsp. praecox Bobrov | Synonym |  | TRO | 
	
		| Trifolium sativum subsp. serotinum Bobrov | Synonym |  | TRO | 
	
		| Trifolium savianum Guss. | Synonym |  | ILDIS | 
	
		| Trifolium saxatile All. | Accepted |  | ILDIS | 
	
		| Trifolium saxicolum Small | Synonym |  | ILDIS | 
	
		| Trifolium scabrellum Greene | Synonym |  | ILDIS | 
	
		| Trifolium scabrum L. | Accepted |  | ILDIS | 
	
		| Trifolium scabrum subsp. lucanicum (Gasp.) Pignati | Accepted |  | TRO | 
	
		| Trifolium scabrum subsp. turcicum Velen. | Synonym |  | ILDIS | 
	
		| Trifolium scaettae Staner | Unresolved |  | WCSP (in review) | 
	
		| Trifolium scariosum A.Nelson | Synonym |  | ILDIS | 
	
		| Trifolium schiedeanum S.Watson | Synonym |  | ILDIS | 
	
		| Trifolium schimperi A.Rich. | Accepted |  | ILDIS | 
	
		| Trifolium schimperianum Hochst. ex Baker f. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium schneideri Standl. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium schreberi Jord. ex Reut. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium schwarzii Wein | Unresolved |  | WCSP (in review) | 
	
		| Trifolium sclerorrhizum Boiss. | Synonym |  | ILDIS | 
	
		| Trifolium scorpioides Blasdale | Synonym |  | ILDIS | 
	
		| Trifolium scutatum Boiss. | Accepted |  | ILDIS | 
	
		| Trifolium sebastiani Savi | Accepted |  | ILDIS | 
	
		| Trifolium sebastianii Savi [Spelling variant] | Synonym |  | ILDIS | 
	
		| Trifolium sefinense Freyn & Bornm. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium segetale Brot. | Synonym |  | ILDIS | 
	
		| Trifolium segetalis Brot. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium segetum Greene | Synonym |  | ILDIS | 
	
		| Trifolium semiglabrum Brot. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium semipilosum Fresen. | Accepted |  | ILDIS | 
	
		| Trifolium seravschanicum Bobrov | Accepted |  | ILDIS | 
	
		| Trifolium serrulatum Lag. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium setiferum Boiss. | Accepted |  | ILDIS | 
	
		| Trifolium shastense House | Synonym |  | ILDIS | 
	
		| Trifolium sibiricum Gueldenst. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium siculum C.Presl ex Steud. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium simense Fresen. | Accepted |  | ILDIS | 
	
		| Trifolium simplex Clos | Synonym |  | ILDIS | 
	
		| Trifolium simplicifolium Walter | Synonym |  | ILDIS | 
	
		| Trifolium simulans House | Synonym |  | ILDIS | 
	
		| Trifolium sintenisii Freyn | Accepted |  | ILDIS | 
	
		| Trifolium siskiyouense J.M.Gillett | Accepted |  | ILDIS | 
	
		| Trifolium smyrnaeum Boiss. | Synonym |  | ILDIS | 
	
		| Trifolium soldeanum Barnola | Unresolved |  | WCSP (in review) | 
	
		| Trifolium somalense Taub. | Accepted |  | ILDIS | 
	
		| Trifolium sonomense D.Heller | Synonym |  | ILDIS | 
	
		| Trifolium spadiceum L. | Accepted |  | ILDIS | 
	
		| Trifolium spananthum Thulin | Accepted |  | ILDIS | 
	
		| Trifolium speciosum Willd. | Synonym |  | ILDIS | 
	
		| Trifolium sphaerocephalum Desf. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium spicatum Sm. | Synonym |  | ILDIS | 
	
		| Trifolium spinulosum Hook. | Synonym |  | ILDIS | 
	
		| Trifolium spinulosum var. triste Torr. & A.Gray | Synonym |  | ILDIS | 
	
		| Trifolium splendens A.Heller | Synonym |  | ILDIS | 
	
		| Trifolium spryginii Belyaeva & Siplivinskii | Accepted |  | TRO | 
	
		| Trifolium spumosum L. | Accepted |  | ILDIS | 
	
		| Trifolium squamosum L. | Accepted |  | ILDIS | 
	
		| Trifolium squarrosum L. | Accepted |  | ILDIS | 
	
		| Trifolium squarrosum subsp. tunetanum (Murb.) Pott.-Alap. | Synonym |  | ILDIS | 
	
		| Trifolium stellatum L. | Accepted |  | ILDIS | 
	
		| Trifolium stellatum subsp. adpressum (Turrill) Ponert | Accepted |  | TRO | 
	
		| Trifolium stellatum var. adpressum Turrill | Synonym |  | TRO | 
	
		| Trifolium stellatum subsp. longiflorum (Gris.) Ponert | Accepted |  | TRO | 
	
		| Trifolium stellatum var. longiflorum Gris. | Synonym |  | TRO | 
	
		| Trifolium stellatum subsp. xanthinum (Freyn) Bald. | Synonym |  | ILDIS | 
	
		| Trifolium stellatum var. xanthinum (Freyn) Bald. | Accepted |  | ILDIS | 
	
		| Trifolium stenolobum Rydb. | Synonym |  | ILDIS | 
	
		| Trifolium stenophyllum Nutt. | Synonym |  | ILDIS | 
	
		| Trifolium stenophyllum Greene | Synonym |  | ILDIS | 
	
		| Trifolium steudneri Schweinf. | Accepted |  | ILDIS | 
	
		| Trifolium stipitatum Boiss. & Balansa | Synonym |  | ILDIS | 
	
		| Trifolium stipitatum Clos | Synonym |  | TRO | 
	
		| Trifolium stipulaceum Thunb. | Accepted |  | ILDIS | 
	
		| Trifolium stipulare Sessé & Moc. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium stoloniferum Muhl. | Accepted |  | ILDIS | 
	
		| Trifolium stolzii sensu Cufod. | Misapplied |  | ILDIS | 
	
		| Trifolium stolzii Harms | Accepted |  | ILDIS | 
	
		| Trifolium stramineum C.Presl | Synonym |  | ILDIS | 
	
		| Trifolium strepens Crantz | Synonym |  | ILDIS | 
	
		| Trifolium striatum L. | Accepted |  | ILDIS | 
	
		| Trifolium striatum var. tastetii Pau | Synonym |  | ILDIS | 
	
		| Trifolium strictum L. | Accepted |  | ILDIS | 
	
		| Trifolium studniczkae Gand. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium suaveolens Willd. | Synonym |  | ILDIS | 
	
		| Trifolium subcaulescens A.Gray | Synonym |  | ILDIS | 
	
		| Trifolium subexpansum Schur | Unresolved |  | WCSP (in review) | 
	
		| Trifolium subrotundum "sensu auct., p.p." | Misapplied |  | ILDIS | 
	
		| Trifolium subsalinum Greene | Synonym |  | ILDIS | 
	
		| Trifolium subterraneum L. | Accepted |  | ILDIS | 
	
		| Trifolium subterraneum var. yanninicum (Katzn. & Morley) ZOHARY | Accepted |  | TRO | 
	
		| Trifolium subulatum Gilib. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium succinctum Vis. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium suffocatum L. | Accepted |  | ILDIS | 
	
		| Trifolium sulphureum K.Koch | Unresolved |  | WCSP (in review) | 
	
		| Trifolium supinum Savi | Synonym |  | ILDIS | 
	
		| Trifolium sylvaticum Gerard | Accepted |  | ILDIS | 
	
		| Trifolium talyschense Chalilov | Accepted |  | TRO | 
	
		| Trifolium tastetii (Pau) Font Quer | Accepted |  | ILDIS | 
	
		| Trifolium tauricum M.Bieb. | Synonym |  | ILDIS | 
	
		| Trifolium tembense Fresen. | Accepted |  | ILDIS | 
	
		| Trifolium tenerum Eastw. | Synonym |  | ILDIS | 
	
		| Trifolium tenibense Fresen. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium tenoreanum Boiss. & Spruner | Unresolved |  | WCSP (in review) | 
	
		| Trifolium tenoreanum H.Buek | Unresolved |  | WCSP (in review) | 
	
		| Trifolium tenue Clem. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium tenue Willd. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium tenuiflorum Ten. | Synonym |  | ILDIS | 
	
		| Trifolium tenuifolium Ten. | Accepted |  | ILDIS | 
	
		| Trifolium thalii Vill. | Accepted |  | ILDIS | 
	
		| Trifolium thessalonicum Halácsy & Charrel | Unresolved |  | WCSP (in review) | 
	
		| Trifolium thionanthum Hausskn. | Synonym |  | ILDIS | 
	
		| Trifolium thompsonii C.V.Morton | Accepted |  | ILDIS | 
	
		| Trifolium thymiflorum Vill. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium titicacense D.Heller & Zohary | Synonym |  | ILDIS | 
	
		| Trifolium titicacense A.W. Hill ex D. Heller & ZOHARY | Synonym |  | TRO | 
	
		| Trifolium tmoleum Boiss. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium tomentosum L. | Accepted |  | ILDIS | 
	
		| Trifolium tomentosum subsp. macrosphaerum (ZOHARY) Ponert | Accepted |  | TRO | 
	
		| Trifolium topalianum Beauverd | Unresolved |  | WCSP (in review) | 
	
		| Trifolium topczibaschevii Khalilov | Synonym |  | ILDIS | 
	
		| Trifolium transsilvanicum Schur | Unresolved |  | WCSP (in review) | 
	
		| Trifolium × traplii Domin | Unresolved |  | WCSP (in review) | 
	
		| Trifolium traskae P.B.Kenn. | Synonym |  | ILDIS | 
	
		| Trifolium triaristatum Colla | Accepted |  | ILDIS | 
	
		| Trifolium triaristatum f. pinetorum (Greene) McDermott | Synonym |  | TRO | 
	
		| Trifolium trichocalyx A.Heller | Accepted |  | ILDIS | 
	
		| Trifolium trichocephalum M.Bieb. | Accepted |  | ILDIS | 
	
		| Trifolium trichocephalum subsp. parantzemae (Azn.) Ponert | Accepted |  | TRO | 
	
		| Trifolium trichodontium Gand. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium trichopterum Pancic | Accepted |  | ILDIS | 
	
		| Trifolium trichostomum Godr. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium tricuspidatum Steud. | Synonym |  | ILDIS | 
	
		| Trifolium tricuspidntum Bertero ex Steud. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium tridentatum Lindl. | Synonym |  | ILDIS | 
	
		| Trifolium tridentatum var. aciculare (Torr. & A.Gray) McDermott | Synonym |  | ILDIS | 
	
		| Trifolium tridentatum var. melananthum (Hook. & Arn.) S.Watson | Synonym |  | ILDIS | 
	
		| Trifolium tridentatum var. obtusiflorum (Hook.f.) S.Watson | Synonym |  | ILDIS | 
	
		| Trifolium tridentatum var. polyodon (Greene) Jeps. | Synonym |  | ILDIS | 
	
		| Trifolium tridentatum var. segetum (Greene) McDermott | Synonym |  | ILDIS | 
	
		| Trifolium tridentatum f. trimorphum (Greene) McDermott | Synonym |  | TRO | 
	
		| Trifolium tridentatum var. watsonii (Lojac.) Jeps. | Synonym |  | ILDIS | 
	
		| Trifolium tridentatum f. watsonii (Lojac.) McDermott | Synonym |  | TRO | 
	
		| Trifolium triflorum Greene | Synonym |  | ILDIS | 
	
		| Trifolium trilobatum Jeps. | Synonym |  | ILDIS | 
	
		| Trifolium trimorphum Greene | Synonym |  | ILDIS | 
	
		| Trifolium triste Nutt. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium tropicum A.Nelson | Synonym |  | ILDIS | 
	
		| Trifolium truncatum (Greene) Greene | Synonym |  | ILDIS | 
	
		| Trifolium tumens M.Bieb. | Accepted |  | ILDIS | 
	
		| Trifolium tumens var. rechingeri Zohary & F.Heller | Synonym |  | ILDIS | 
	
		| Trifolium tumens var. talyschense (Khalilov) Zohary | Accepted |  | ILDIS | 
	
		| Trifolium tumens subsp. talyschense ZOHARY | Synonym |  | TRO | 
	
		| Trifolium tumescens Gilib. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium tunetanum Murb. | Accepted |  | ILDIS | 
	
		| Trifolium turgidum M.Bieb. | Synonym |  | ILDIS | 
	
		| Trifolium ucrainicum Opperman | Unresolved |  | WCSP (in review) | 
	
		| Trifolium uintense Rydb. | Synonym |  | ILDIS | 
	
		| Trifolium ukingense Harms | Accepted |  | ILDIS | 
	
		| Trifolium ukrainicum Opperman | Synonym |  | ILDIS | 
	
		| Trifolium ultramontanum Greene | Synonym |  | ILDIS | 
	
		| Trifolium umbellatum Ser. | Synonym |  | ILDIS | 
	
		| Trifolium umbellulatum A.Rich. | Synonym |  | ILDIS | 
	
		| Trifolium uniflorum L. | Accepted |  | ILDIS | 
	
		| Trifolium unifolium Forssk. | Synonym |  | ILDIS | 
	
		| Trifolium usambarense Taub. | Accepted |  | ILDIS | 
	
		| Trifolium vaginatum Schleich. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium vaillantii Ten. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium vaillantii M.Bieb. ex Fisch. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium vaillantii Poir. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium vaillantii Loisel. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium valdivianum D.Heller & Zohary | Synonym |  | ILDIS | 
	
		| Trifolium variabile Guss. ex Ser. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium variegatum Torr. & A.Gray | Accepted |  | ILDIS | 
	
		| Trifolium variegatum Nutt. | Unresolved |  | TRO | 
	
		| Trifolium variegatum var. major Lojac. | Synonym |  | TRO | 
	
		| Trifolium variegatum f. major (Lojac.) McDermott | Synonym |  | TRO | 
	
		| Trifolium variegatum var. melananthum (Hook. & Arn.) McDermott | Synonym |  | ILDIS | 
	
		| Trifolium variegatum var. melananthum (Hook. & Arn.) Greene | Synonym |  | TRO | 
	
		| Trifolium variegatum f. morleyanum (Greene) McDermott | Synonym |  | TRO | 
	
		| Trifolium variegatum var. pauciflorum (Torr. & A.Gray) "McDermott,p.p." | Synonym |  | ILDIS | 
	
		| Trifolium variegatum var. pauciflorum (Torr. & A.Gray) "McDermott, p.p" | Synonym |  | ILDIS | 
	
		| Trifolium variegatum var. pauciflorum (Nutt.) McDermott | Synonym |  | TRO | 
	
		| Trifolium variegatum f. phaeocephalum (Greene) McDermott | Synonym |  | TRO | 
	
		| Trifolium variegatum var. polyodon (Greene) D.Heller | Synonym |  | ILDIS | 
	
		| Trifolium variegatum var. rostratum (Greene) C.L.Hitchc. | Accepted |  | ILDIS | 
	
		| Trifolium variegatum var. trilobatum (Jeps.) McDermott | Synonym |  | ILDIS | 
	
		| Trifolium variegatum var. variegatum Torr. & A.Gray | Accepted |  | ILDIS | 
	
		| Trifolium vavilovii Eig | Accepted |  | ILDIS | 
	
		| Trifolium velebiticum Degen | Accepted |  | ILDIS | 
	
		| Trifolium velenovskyi Vandas | Accepted |  | ILDIS | 
	
		| Trifolium velenowskyi Vandas ex Velenovsky | Unresolved |  | TRO | 
	
		| Trifolium velivolum Paine | Synonym |  | ILDIS | 
	
		| Trifolium ventricosum C.Presl ex Steud. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium vernum Phil. | Accepted |  | ILDIS | 
	
		| Trifolium versicolor Steud. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium vesiculosum Savi | Accepted |  | ILDIS | 
	
		| Trifolium vestitum D.Heller & Zohary | Accepted |  | ILDIS | 
	
		| Trifolium viciosoanum Pau | Unresolved |  | WCSP (in review) | 
	
		| Trifolium villiferum House | Synonym |  | ILDIS | 
	
		| Trifolium villosum Ten. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium villosum C.Presl | Unresolved |  | WCSP (in review) | 
	
		| Trifolium villosum Gilib. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium villosum Seenus ex Steud. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium vinyalsii Sennen ex Pau | Unresolved |  | TRO | 
	
		| Trifolium violaceum Davidov | Synonym |  | ILDIS | 
	
		| Trifolium virescens Greene | Synonym |  | ILDIS | 
	
		| Trifolium virginicum Small & Vail | Accepted |  | ILDIS | 
	
		| Trifolium visianii Gand. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium volubile Lour. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium vulgare Hayne | Unresolved |  | WCSP (in review) | 
	
		| Trifolium vulgare Gueldenst. ex Ledeb. | Unresolved |  | WCSP (in review) | 
	
		| Trifolium waldsteinianum Sweet | Unresolved |  | WCSP (in review) | 
	
		| Trifolium watsonii Lojac. | Synonym |  | ILDIS | 
	
		| Trifolium weberbaueri Ulbr. | Synonym |  | ILDIS | 
	
		| Trifolium wentzelianum Harms | Accepted |  | ILDIS | 
	
		| Trifolium wentzelianum var. stolzii (Harms) J.B.Gillett | Synonym |  | ILDIS | 
	
		| Trifolium wettsteinii Dorfl. & Hayek | Accepted |  | ILDIS | 
	
		| Trifolium wigginsii J.M.Gillett | Accepted |  | ILDIS | 
	
		| Trifolium willdenovii Spreng. | Accepted |  | ILDIS | 
	
		| Trifolium willdenovii var. fimbriatum (Lindl.) Ewan | Accepted |  | TRO | 
	
		| Trifolium willdenovii var. kennedianum (McDermott) Ewan | Accepted |  | TRO | 
	
		| Trifolium willkommii Chabert | Unresolved |  | WCSP (in review) | 
	
		| Trifolium wormskioldii Lehm. | Accepted |  | ILDIS | 
	
		| Trifolium wormskioldii var. arizonicum (Greene) Barneby | Synonym |  | ILDIS | 
	
		| Trifolium wormskioldii var. fimbriatum (Lindl.) Jeps. | Synonym |  | TRO | 
	
		| Trifolium wormskioldii var. kennedianum (McDermott) Jeps. | Synonym |  | TRO | 
	
		| Trifolium wormskioldii var. longicaule (Wooton & Standl.) L.D.Benson | Synonym |  | ILDIS | 
	
		| Trifolium wormskioldii var. ortegae (Greene) Barneby | Synonym |  | TRO | 
	
		| Trifolium wormskioldii var. siskiyouense (J.M.Gillett) Isely | Synonym |  | ILDIS | 
	
		| Trifolium xanthicum Freyn [Spelling variant] | Synonym |  | ILDIS | 
	
		| Trifolium xanthinoides (Rohlena) A.W.Hill | Unresolved |  | WCSP (in review) | 
	
		| Trifolium xanthinum Freyn | Synonym |  | ILDIS | 
	
		| Trifolium xatardii DC. | Synonym |  | ILDIS | 
	
		| Trifolium xerocephalum Fenzl | Synonym |  | ILDIS | 
	
		| Trifolium yanninicum (Katzn. & Morley) Katzn. | Synonym |  | TRO |