Fr: dryoptère dressée
Provincial Status: LN
Range: Boreal cordilleran disj., Europe; sw/nw/?eNfld., N thru Lab.
[=Nephrodium expansum C.Presl (basionym)]
[=Aspidium spinulosum (O.F.Müll.) Sw. var. oblongum Milde]
[=Dryopteris assimilis S.Walker]
[=Dryopteris austriaca (Jacq.) Woyn. ex Schinz & Thell. subsp. assimilis (S.Walker) O.Bolòs & Vigo]
[=Dryopteris carthusiana (Vill.) H.P.Fuchs subsp. assimilis (S.Walker) O.Bolòs, Vigo, Masalles & Ninot]
[=Dryopteris expansa (C.Presl) Fraser-Jenk. & Jermy subsp. assimilis (S.Walker) Tzvelev]
[=Dryopteris spinulosa (O.F.Müll.) Kuntze subsp. assimilis (S.Walker) Schidlay]
[=Dryopteris spinulosa (O.F.Müll.) Kuntze var. assimilis (S.Walker) Schidlay]
[=Lastrea expansa (C.Presl) C.Presl]
[Dryopteris expansa is known in Nfld. from the St. Anthony area (Britton 1976), nwNfld., as well as exposed headlands in southwestern Nfld. Two Labrador reports in the MT database originate from wLab. (L. Brouillet, pers comm., Dec. 2016). This diploid species is considered to be one of the parent species of Dryopteris campyloptera (FNA 2:287).]