| Alnus acuminata subsp. arguta (Schltdl.) Furlow |
Accepted |
14 |
| Alnus cordata (Loisel.) Duby |
Accepted |
21 |
| Alnus cremastogyne Burkill |
Accepted |
28 |
| Alnus fauriei H. Lév. & Vaniot |
Accepted |
28 |
| Alnus ferdinandi-coburgii C. K. Schneid. |
Accepted |
28 |
| Alnus firma Siebold & Zucc. |
Accepted |
56 |
| Alnus formosana (Burkill) Makino |
Accepted |
28 |
| Alnus glutinosa (L.) Gaertn. |
Accepted |
14 |
| Alnus hirsuta (Spach) Rupr. |
Accepted |
21 |
| Alnus incana (L.) Moench |
Accepted |
14 |
| Alnus incana subsp. kolaensis (Orlova) Á. Löve & D. Löve |
Accepted |
14 |
| Alnus incana subsp. rugosa (D. Roi) R. T. Clausen |
Accepted |
14 |
| Alnus incana subsp. tenuifolia (Nutt.) Breitung |
Accepted |
14 |
| Alnus japonica (Thunb.) Steud. |
Accepted |
21 |
| Alnus lanata Duthie ex Bean |
Accepted |
28 |
| Alnus maritima (Marshall) Muhl. ex Nutt. |
Accepted |
14 |
| Alnus maximowiczii Callier |
Accepted |
14 |
| Alnus nepalensis D. Don |
Accepted |
28 |
| Alnus nitida (Spach) Endl. |
Accepted |
28 |
| Alnus orientalis Decne. |
Accepted |
21 |
| Alnus pendula Matsum. |
Accepted |
14 |
| Alnus rubra Bong. |
Accepted |
14 |
| Alnus serrulata (Aiton) Willd. |
Accepted |
14 |
| Alnus serrulatoides Callier |
Accepted |
14 |
| Alnus sieboldiana Matsum. |
Accepted |
42 |
| Alnus subcordata C. A. Mey. |
Accepted |
21 |
| Alnus ×pubescens Tausch |
Accepted |
14 |
| Alnus acuminata subsp. acuminata |
Synonym of Alnus acuminata Kunth |
14 |
| Alnus viridis (Chaix) DC. |
Synonym of Alnus alnobetula (Ehrh.) K. Koch |
14 |
| Alnus crispa (Aiton) Pursh |
Synonym of Alnus alnobetula subsp. crispa (Aiton) Raus |
14 |
| Alnus viridis subsp. crispa (Aiton) Turrill |
Synonym of Alnus alnobetula subsp. crispa (Aiton) Raus |
14 |
| Alnaster fruticosus (Rupr.) Ledeb. |
Synonym of Alnus alnobetula subsp. fruticosa (Rupr.) Raus |
14 |
| Alnus fruticosa Rupr. |
Synonym of Alnus alnobetula subsp. fruticosa (Rupr.) Raus |
14 |
| Alnus viridis A. Gray |
Synonym of Alnus alnobetula subsp. fruticosa (Rupr.) Raus |
14 |
| Alnus viridis subsp. fruticosa (Rupr.) Nyman |
Synonym of Alnus alnobetula subsp. fruticosa (Rupr.) Raus |
14 |
| Alnus crispa subsp. sinuata (Regel) Hultén |
Synonym of Alnus alnobetula subsp. sinuata (Regel) Raus |
14 |
| Alnus viridis subsp. sinuata (Regel) Á. Löve & D. Löve |
Synonym of Alnus alnobetula subsp. sinuata (Regel) Raus |
14 |
| Alnus cordata Desf. |
Synonym of Alnus cordata (Loisel.) Duby |
21 |
| Alnus hirsuta var. microphylla (Nakai) Tatew. |
Synonym of Alnus hirsuta (Spach) Rupr. |
21 |
| Alnus sibirica Fisch. ex Turcz. |
Synonym of Alnus hirsuta (Spach) Rupr. |
21 |
| Alnus tinctoria Sarg. |
Synonym of Alnus hirsuta (Spach) Rupr. |
21 |
| Alnus borealis (Norrl.) C. Regel |
Synonym of Alnus incana (L.) Moench |
14 |
| Alnus incana subsp. incana |
Synonym of Alnus incana (L.) Moench |
14 |
| Alnus rugosa (D. Roi) Spreng. |
Synonym of Alnus incana subsp. rugosa (D. Roi) R. T. Clausen |
14 |
| Alnus tenuifolia Nutt. |
Synonym of Alnus incana subsp. tenuifolia (Nutt.) Breitung |
14 |
| Alnus jorullensis subsp. jorullensis |
Synonym of Alnus jorullensis Kunth |
14 |
| Alnus × spaethii |
Synonym of Alnus × spaethii Callier |
28 |