040106b Equisetum hyemale subsp. affine (Engelm.) Calder & R.L. Taylor
Distribution
Western Alaska: Present only in the Borderline Arctic
Northern Alaska - Yukon: Present only in the Borderline Arctic
Shrub Tundra: Present only in the Borderline Arctic
Bordering boreal or alpine areas: Scattered
- Calder & R.L. Taylor, Canad. J. Bot. 43: 1387 (1965). - Equisetum robustum var. affine Engelm., Amer. J. Sci. Arts 46: 88 (1844). Described from Missouri (U.S.A.). - Equisetum hyemale var. affine (Engelm.) A.A. Eaton, Fern Bull. 11: 111 (1903). - Hippochaete hyemalis subsp. affinis (Engelm.) Holub, Preslia 44: 128 (1972).
- Equisetum hyemale var. californicum Milde, Monogr. Equiset.: 517 (1867). Described from California (U.S.A.).
2n=
216 (2x). - Canada, U.S.A. - At least four reports.
Geography: Amphi-Beringian - North American: (ALA CAN).
Notes: Subspecies affine reaches the Borderline Arctic in southwestern Alaska (Hauke 1993, an extension compared with Hultén 1968a) and in the northern Yukon Territory (Cody 1996). Cody (in comment) gave the Yukon Territory locality as Bell River which runs out of the northern Richardson Mountains.
Higher Taxa
- Equisetum hyemale [040106,species]