Filix-mas spinulosa var. americana (Fisch.) Farw.

, Amer. Midl. Naturalist 12: 257 (1931). BHL
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External links to taxonomic opinions:
POWO
IPNI Life Sciences Identifier (LSID)
urn:lsid:ipni.org:names:104880-2
Publication
American Midland Naturalist; devoted to natural history, primarily that of the prairie states.
Collation
12: 257
Family as entered in IPNI
Dryopteridaceae

Links

Nomenclatural link
Aspidium spinulosum var. americanum Fisch. ex Kunze, Amer. J. Sci. Arts ser. 2, 6: 83, 84 (1848).
Same citation as
Filix-mas spinulosa var. americana (Fisch. ex Kunze) Farw.