Checklist » Athyriaceae » Athyrium distentifolium ssp. americanum
Last updated 5/25/2016 by David Giblin.
Athyrium distentifolium Tausch ex Opiz ssp. americanum (Butters) Hultén[HC2]

Origin: Native

selected vouchers: WTU

Notes: JPM use of (Hoppe) T. Moore as author is incorrect; KZ99 use of (Hoppe) Milde as author is incorrect; A. alpestre (Hoppe) Rylands ex T. Moore is superfluous, coined in 1857, after the 1811 A. alpestre (Hoppe) Clairv.; here we follow FNA
The combination Athyrium distentifolium Tausch ex Opiz var. americanum (Butters) was used in 1966 by B. Boivin, but lacking sufficient bibliographic reference to validate it (IM1), so here we use the 1969 combination by Cronquist, following FNA, not KZ99

References: (none)

Synonyms & Misapplied Names:
Athyrium alpestre (Hoppe) Clairville var. americanum Butters[FNA2]
Athyrium americanum (Butters) Maxon[KZ99, Peck]
Athyrium distentifolium Tausch ex Opiz var. americanum (Butters) Cronquist[VPPNW1, HC]