Alnus subcordata C.A.Mey. species accepted

Alnus cremastogyne Burkill species accepted

Alnus paniculata Nakai species accepted

Alnus firma Siebold & Zucc. species accepted

Alnus lusitanica Vít, Douda & Mandák species accepted

Alnus rohlenae Vít, Douda & Mandák species accepted

Alnus betulifolia G.Y.Li, Z.H.Chen & D.D.Ma species accepted

Alnus incana (L.) Moench species accepted

Alnus lanata Duthie ex Bean species accepted

Alnus maximowiczii Callier species accepted

Alnus acuminata Kunth species accepted

Alnus alnobetula (Ehrh.) K.Koch species accepted

Alnus × aschersoniana Callier species accepted

Alnus cordata (Loisel.) Duby species accepted

Alnus djavanshirii H.Zare species accepted

Alnus dolichocarpa H.Zare, Amini & Assadi species accepted

Alnus × elliptica Req. species accepted

Alnus × fallacina Callier species accepted

Alnus fauriei H.Lév. & Vaniot species accepted

Alnus ferdinandi-coburgii C.K.Schneid. species accepted

Alnus formosana (Burkill) Makino species accepted

Alnus glutinosa (L.) Gaertn. species accepted

Alnus glutipes (Jarm. ex Czerpek) Vorosch. species accepted

Alnus hakkodensis Hayashi species accepted

Alnus × hanedae Suyinata species accepted

Alnus henryi C.K.Schneid. species accepted

Alnus hirsuta (Spach) Rupr. species accepted

Alnus × hosoii Mizush. species accepted

Alnus japonica (Thunb.) Steud. species accepted

Alnus jorullensis Kunth species accepted

Alnus × mayrii Callier species accepted

Alnus mairei H.Lév. species accepted

Alnus mandschurica (Callier) Hand.-Mazz. species accepted

Alnus maritima (Marshall) Muhl. ex Nutt. species accepted

Alnus matsumurae Callier species accepted

Alnus nepalensis D.Don species accepted

Alnus nitida (Spach) Endl. species accepted

Alnus oblongifolia Torr. species accepted

Alnus orientalis Decne. species accepted

Alnus × peculiaris Hiyama species accepted

Alnus pendula Matsum. species accepted

Alnus × pubescens Tausch species accepted

Alnus rhombifolia Nutt. species accepted

Alnus rubra Bong. species accepted

Alnus serrulata (Aiton) Willd. species accepted

Alnus serrulatoides Callier species accepted

Alnus sieboldiana Matsum. species accepted

Alnus × silesiaca Fiek species accepted

Alnus × spaethii Callier species accepted

Alnus × suginoi Sugim. species accepted

Alnus trabeculosa Hand.-Mazz. species accepted

Alnus vermicularis Nakai species accepted