Checklist » Betulaceae » Alnus incana ssp. tenuifolia
Last updated 11/28/2021 by David Giblin.
Alnus incana (L.) Moench ssp. tenuifolia (Nutt.) Breitung[FNA3, HC2]
mountain alder

Publication: Amer. Midl. Naturalist. 58: 25. 1957.

Origin: Native

selected vouchers: WTU

Notes: FNA3: "Alnus incana subsp. tenuifolia is somewhat more treelike than the eastern A . incana subsp. rugosa , from which it also differs in leaf shape, leaf margins, and other characters. It is a frequent component of streamside vegetation throughout the Rocky Mountains and other mountainous parts of western North America.

Native Americans used alnus incana subsp. tenuifolia medicinally for pains in the lungs or hips, for scrofula, as a laxative, and as a diuretic for gonorrhea (D. E. Moerman 1986)."

References: (none)

Synonyms & Misapplied Names:
Alnus incana (L.) Moench var. occidentalis (Dippel) C.L. Hitchc.[HC]
Alnus incana (L.) Moench var. virescens S. Watson
Alnus occidentalis Dippel
Alnus ×purpusii Callier
Alnus rugosa (Du Roi) Spreng. var. occidentalis (Dippel) C.L. Hitchc.
Alnus tenuifolia Nutt.[VPBC1]
Alnus tenuifolia Nutt. var. occidentalis (Dippel) Collier[VPBC, VPBC]