Fr: athyrie alpestre américaine
Provincial Status: LN
Range: Alpine, cordilleran disj.; w/nwNfld., N to c/nLab.; snowbeds.
[=Athyrium alpestre (Hoppe) Rylands ex T.Moore var. americanum Butters (basionym)]
[=Athyrium alpestre (Hoppe) Rylands ex T.Moore subsp. americanum (Butters) Lellinger]
[=Athyrium alpestre (Hoppe) Rylands ex T.Moore var. gaspense Fernald]
[=Athyrium alpestre (Hoppe) Rylands ex T.Moore var. typicum Fernald, nom. inval.]
[=Athyrium americanum (Butters) Maxon]
[=Athyrium distentifolium Tausch ex Opiz subsp. americanum (Butters) Hultén]
[=Athyrium distentifolium Tausch ex Opiz var. americanum (Butters) Cronquist 1969, nom. illeg. isonym., non (Butters) B.Boivin 1966]
[=Phegopteris alpestris (Hoppe) Mett. var. americana (Butters) Jeps.]
[=Phegopteris rhaetica (Willd.) Watt. var. americana (Butters) Farw.]
[Athyrium distentifolium var. americanum, classified as rare in Nfld., is found in late snowbeds and quartzite slopes in the Long Range Mts. (Bouchard et al., 1991). In Labrador, Norman Dignard (Québec-Labrador flora) reported that of the 3 known herbarium specimens of A. distentifolium (as A. alpestre), 2 have been annotated as Athyrium filix-femina (#7167 CAN, QFA: Dutilly, O’Neill, & Duman: Cutthroat Harbour, Lab.; #7295 CAN, QFA: Dutilly, O’Neill, and Duman: Small Dog Island, Lab.), while the 3rd collection is composed of 2 Woodsia species (#7531, Wynne-Edwards: Nain (CAN), annotated by M.Windham, UT) (N. Dignard, pers. comm., Oct., Nov., 2005, Apr. 2013). The first confirmed report of Athyrium distentifolium var. americanum from Labrador is from the Aurora-Michelin study by Jacques-Whitford, July 2008, where it was collected from snowbeds on the MicMac Hill by S.J. Meades, M. Macdonald, B. Keeping, and M. Andrews. A report of A. distentifolium var. americanum from 2001 by M. Anions from the Mealy Mts. remains unconfirmed until vouchers can be checked, but photographs indicate the identification to be good.]