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You should refer instead to the current version of The Plant List.

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
Alnus acuminata Kunth	Accepted		WCSP
Alnus cordata (Loisel.) Duby	Accepted		WCSP
Alnus cremastogyne Burkill	Accepted		WCSP
Alnus × elliptica Req.	Accepted		WCSP
Alnus × fallacina Callier	Accepted		WCSP
Alnus fauriei H.Lév. & Vaniot	Accepted		WCSP
Alnus ferdinandi-coburgii C.K.Schneid.	Accepted		WCSP
Alnus firma Siebold & Zucc.	Accepted		WCSP
Alnus formosana (Burkill) Makino	Accepted		WCSP
Alnus glutinosa (L.) Gaertn.	Accepted		WCSP
Alnus glutipes (Jarm. ex Czerpek) Vorosch.	Accepted		WCSP
Alnus hakkodensis Hayashi	Accepted		WCSP
Alnus × hanedae Suyinata	Accepted		WCSP
Alnus henryi C.K.Schneid.	Accepted		WCSP
Alnus hirsuta (Spach) Rupr.	Accepted		WCSP
Alnus × hosoii Mizush.	Accepted		WCSP
Alnus incana (L.) Moench	Accepted		WCSP
Alnus japonica (Thunb.) Steud.	Accepted		WCSP
Alnus jorullensis Kunth	Accepted		WCSP
Alnus lanata Duthie ex Bean	Accepted		WCSP
Alnus mairei H.Lév.	Accepted		WCSP
Alnus mandshurica (Callier) Hand.-Mazz.	Accepted		WCSP
Alnus maritima (Marshall) Muhl. ex Nutt.	Accepted		WCSP
Alnus matsumurae Callier	Accepted		WCSP
Alnus maximowiczii Callier	Accepted		WCSP
Alnus × mayrii Callier	Accepted		WCSP
Alnus nepalensis D.Don	Accepted		WCSP
Alnus nitida (Spach) Endl.	Accepted		WCSP
Alnus oblongifolia Torr.	Accepted		WCSP
Alnus orientalis Decne.	Accepted		WCSP
Alnus paniculata Nakai	Accepted		WCSP
Alnus × peculiaris Hiyama	Accepted		WCSP
Alnus pendula Matsum.	Accepted		WCSP
Alnus × pubescens Tausch	Accepted		WCSP
Alnus rhombifolia Nutt.	Accepted		WCSP
Alnus rubra Bong.	Accepted		WCSP
Alnus serrulata (Aiton) Willd.	Accepted		WCSP
Alnus serrulatoides Callier	Accepted		WCSP
Alnus sieboldiana Matsum.	Accepted		WCSP
Alnus subcordata C.A.Mey.	Accepted		WCSP
Alnus × suginoi Sugim.	Accepted		WCSP
Alnus trabeculosa Hand.-Mazz.	Accepted		WCSP
Alnus vermicularis Nakai	Accepted		WCSP
Alnus viridis (Chaix) DC.	Accepted		WCSP

Statistics

The Plant List includes 191 scientific plant names of species rank for the genus Alnus. Of these 44 are accepted species names.

The Plant List includes a further 358 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 191 species names for the genus Alnus recorded in The Plant List, are as follows:

	Status	Total
◕	Accepted	44	23.0%
◕	Synonym	124	64.9%
◕	Unplaced	13	6.8%
◕	Unassessed	10	5.2%

All names

The status of the 549 names (including infraspecific names) for the genus Alnus recorded in The Plant List, are as follows:

	Status	Total
◕	Accepted	62	11.3%
◕	Synonym	464	84.5%
◕	Unplaced	13	2.4%
◕	Unassessed	10	1.8%

Of these names,

• 11 are recorded as invalid
• 6 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 191 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	120	0	0	164	85.9%
	Medium confidence	0	3	0	0	3	1.6%
	Low confidence	0	1	13	10	24	12.6%

The source of the species name record found in The Plant List for the genus Alnus, are as follows: