⚠ Version 1.1 of The Plant List has been superseded and should no longer be used.

The new version is available at http://www.worldfloraonline.org. The new version is enhanced, using more data sources including Taxonomic Expert Networks and will be more frequently updated.

The genus Alnus is in the family Betulaceae in the major group Angiosperms (Flowering plants).

Statistics are at the end of the page.

Species in Alnus

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See "Status", "Confidence level", "Source" for definitions.

Name	Status	Confi­dence level	Source	Date supplied	Infra. rec.
Alnus acuminata Kunth	Accepted		WCSP	2012-03-23	2
Alnus alnobetula (Ehrh.) K.Koch	Accepted		WCSP	2012-03-23	4
Alnus × aschersoniana Callier	Unresolved		WCSP	2012-03-23
Alnus balatonialis Borbás	Unresolved		TRO	2012-04-18
Alnus cordata (Loisel.) Duby	Accepted		WCSP	2012-03-23
Alnus cremastogyne Burkill	Accepted		WCSP	2012-03-23
Alnus cuneata Geyer ex Walp.	Unresolved		WCSP	2012-03-23
Alnus dimitrovii Jordanov & Kitanov	Unresolved		WCSP	2012-03-23
Alnus × elliptica Req.	Accepted		WCSP	2012-03-23
Alnus × fallacina Callier	Accepted		WCSP	2012-03-23
Alnus fauriei H.Lév. & Vaniot	Accepted		WCSP	2012-03-23
Alnus ferdinandi-coburgii C.K.Schneid.	Accepted		WCSP	2012-03-23
Alnus fernandi-coburgii C.K. Schneid.	Unresolved		TRO	2012-04-18
Alnus figerti Callier	Unresolved		TRO	2012-04-18
Alnus firma Siebold & Zucc.	Accepted		WCSP	2012-03-23
Alnus formosana (Burkill) Makino	Accepted		WCSP	2012-03-23
Alnus frangula L. ex Huth	Unresolved		TRO	2012-04-18
Alnus gigantea Nakai	Unresolved		WCSP	2012-03-23
Alnus glandulosa Sarg.	Unresolved		TRO	2012-04-18
Alnus glutinosa (L.) Gaertn.	Accepted		WCSP	2012-03-23	3
Alnus glutipes (Jarm. ex Czerpek) Vorosch.	Accepted		WCSP	2012-03-23
Alnus hakkodensis Hayashi	Accepted		WCSP	2012-03-23
Alnus × hanedae Suyinata	Accepted		WCSP	2012-03-23
Alnus henedae Sugim.	Unresolved		WCSP	2012-03-23
Alnus henryi C.K.Schneid.	Accepted		WCSP	2012-03-23
Alnus hirsuta (Spach) Rupr.	Accepted		WCSP	2012-03-23
Alnus × hosoii Mizush.	Accepted		WCSP	2012-03-23
Alnus hybrida Rchb.	Unresolved		TRO	2012-04-18
Alnus incana (L.) Moench	Accepted		WCSP	2012-03-23	3
Alnus japonica (Thunb.) Steud.	Accepted		WCSP	2012-03-23
Alnus jorullensis Kunth	Accepted		WCSP	2012-03-23	1
Alnus × koehnei Callier	Unresolved		WCSP	2012-03-23
Alnus laciniata Ehrh.	Unresolved		TRO	2012-04-18
Alnus lanata Duthie ex Bean	Accepted		WCSP	2012-03-23
Alnus × ljungeri Murai	Unresolved		TRO	2012-04-18
Alnus lobata Nyman	Unresolved		TRO	2012-04-18
Alnus mairei H.Lév.	Accepted		WCSP	2012-03-23
Alnus mandshurica (Callier) Hand.-Mazz.	Accepted		WCSP	2012-03-23
Alnus maritima (Marshall) Muhl. ex Nutt.	Accepted		WCSP	2012-03-23
Alnus matsumurae Callier	Accepted		WCSP	2012-03-23
Alnus maximowiczii Callier	Accepted		WCSP	2012-03-23
Alnus × mayrii Callier	Accepted		WCSP	2012-03-23
Alnus microphylla Arv.-Touv.	Unresolved		WCSP	2012-03-23
Alnus nepalensis D.Don	Accepted		WCSP	2012-03-23
Alnus nitida (Spach) Endl.	Accepted		WCSP	2012-03-23
Alnus oblongifolia Torr.	Accepted		WCSP	2012-03-23
Alnus obtusifolia Mert. ex Regel	Unresolved		TRO	2012-04-18
Alnus orientalis Decne.	Accepted		WCSP	2012-03-23
Alnus oxyacantha Lavalle	Unresolved		WCSP	2012-03-23
Alnus paniculata Nakai	Accepted		WCSP	2012-03-23
Alnus × peculiaris Hiyama	Accepted		WCSP	2012-03-23
Alnus pendula Matsum.	Accepted		WCSP	2012-03-23
Alnus × pubescens Tausch	Accepted		WCSP	2012-03-23
Alnus × purpusii Callier	Unresolved		WCSP	2012-03-23
Alnus rhombifolia Nutt.	Accepted		WCSP	2012-03-23
Alnus rubra Bong.	Accepted		WCSP	2012-03-23
Alnus serrulata (Aiton) Willd.	Accepted		WCSP	2012-03-23
Alnus serrulatoides Callier	Accepted		WCSP	2012-03-23
Alnus sieboldiana Matsum.	Accepted		WCSP	2012-03-23
Alnus × silesiaca Fiek	Unresolved		WCSP	2012-03-23
Alnus × spaethii Callier	Unresolved		WCSP	2012-03-23
Alnus subcordata C.A.Mey.	Accepted		WCSP	2012-03-23
Alnus subrotunda Desf.	Unresolved		WCSP	2012-03-23
Alnus × suginoi Sugim.	Accepted		WCSP	2012-03-23
Alnus trabeculosa Hand.-Mazz.	Accepted		WCSP	2012-03-23
Alnus vermicularis Nakai	Accepted		WCSP	2012-03-23
Alnus vilmoriana Lebas	Unresolved		WCSP	2012-03-23
Alnus washinhtonia Wetzel	Unresolved		TRO	2012-04-18

Statistics

The Plant List includes 251 scientific plant names of species rank for the genus Alnus. Of these 44 are accepted species names.

The Plant List includes a further 377 scientific plant names of infraspecific rank for the genus Alnus. We do not intend The Plant List to be complete for names of infraspecific rank. These are primarily included because names of species rank are synonyms of accepted infraspecific names.

Species names

The status of the 251 species names for the genus Alnus recorded in The Plant List, are as follows:

	Status	Total
◕	Accepted	44	17.5%
◕	Synonym	183	72.9%
◕	Unplaced	0	0%
◕	Unassessed	24	9.6%

All names

The status of the 628 names (including infraspecific names) for the genus Alnus recorded in The Plant List, are as follows:

	Status	Total
◕	Accepted	57	9.1%
◕	Synonym	547	87.1%
◕	Unplaced	0	0%
◕	Unassessed	24	3.8%

Of the species names,

• 14 are recorded as invalid
• 8 are recorded as illegitimate
• 1 are recorded as a spelling variant

A further 1 name records indicate where names have been misapplied.

The confidence with which the status of the 251 species names recorded in The Plant List for the genus Alnus, are assigned as follows:

	Confidence level	Accepted	Synonym	Unplaced	Unassessed	Total
	High confidence	44	176	0	0	220	87.6%
	Medium confidence	0	6	0	0	6	2.4%
	Low confidence	0	1	0	24	25	10.0%

The source of the species name records found in The Plant List for the genus Alnus is as follows: