Contains 1 accepted taxa overall.

Characteristics
Alnus Mill.
ALDER
Classification
FAGALES
Alnus
Citation
ALNUS Miller, Gard. Dict. Abr., ed. 4. 1754.
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TYPE: Alnus glutinosa (Linnaeus) Gaertner (Betula alnus Linnaeus, var. glutinosa Linnaeus) Lectotypified by Furlow, Rhodora 81: 74. 1979.
Species
Scientific Name Common Name Herbarium Specimens Status Photos
Alnus serrulata HAZEL ALDER Native FACW (NWPL) OBL (DEP)
Identification Key

No identification key is available for this family.

Genus Synonyms
Synonym Full Citation Basionym Type
Alnaster Alnaster Spach, Ann. Sci. Nat., Bot., ser. 2. 15: 183, 200. 1841. TYPE: Alnus viridis Spach, nom. illegit. (Betula viridis Chaix, nom. illegit.; Betula alnobetula Ehrhart)
Alnobetula Alnobetula (W. D. J. Koch) Schur, Verh. Mitth. Siebeguerg Vereins Naturwiss. Hermannstadt 4: 68. 1853. BASIONYM: Alnus Miller, sect. Alnobetula W. D. J. Koch, Syn. Fl. Germ. Helv., ed. 2. 762. 1844. TYPE: Alnobetula viridis Schur (Betula viridis Chaix, nom. illegit.; Betula alnobetula Ehrhart) = Alnaster Spach 1841.
Betula-alnus Betula-alnus Marshall, Arbust. Amer. 19. 1785. TYPE: Non designatus.
Clethropsis Clethropsis Spach, Ann. Sci. Nat., Bot., ser. 2. 15: 183, 201. 1841. TYPE: Non designatus.
Semidopsis Semidopsis Zumaglini, Fl. Pedem. 1: 249. 1849. TYPE: Semidopsis viridis Zumaglini, nom. illegit. (Betula viridis Chaix, nom. illegit.; Betula alnobetula Ehrhart) = Alnaster Spach 1841.