Athyrium filixfemina subsp. angustum (Willd.) R.T. Clausen
Publ. & Syn.R.T. Clausen, Cornell Univ. Agric. Exp. Sta. Mem. 291: 7 (1949). - Aspidium angustum Willd., Sp. Pl. 5, 1: 277 (1810). Described from Canada. - Athyrium angustum (Willd.) C. Presl, Reliq. Haenk. 1: 39 (1825). - Athyrium filixfemina var. angustum (Willd.) G. Lawson, Edinburgh New Philos. J., ser. 2, 19: 115 (1864).
NotesKato (1993) included the southern Greenland plants in var. subsp. angustum.
Chromosomes80 (4x). - Canada, U.S.A. - Several reports.
GeographyNorth American (NE): CAN GRL.
Distribution N = F     GW = r     E = R     HL = r     [ key ]
Parent taxonAthyrium filixfemina (L.) Roth
PAF ID090201c
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Panarctic Flora Editor-in-Chief: Reidar Elven (Natural History Museum, University of Oslo)
Editorial Committee: Reidar Elven, David F. Murray (Museum of the North, University of Alaska), Volodya Yu. Razzhivin (Komarov Botanical Institute, Russian Academy of Sciences), Boris A. Yurtsev [deceased] (Komarov Botanical Institute, Russian Academy of Sciences)