Athyrium filix-femina var. asplenioides

(Michaux) Farwell

Pap. Michigan Acad. Sci. 2: 13. 1923.

Common names: Southern lady fern lowland lady fern
Endemic
Basionym: Nephrodium asplenioides (Michaux) Desvaux Fl. Bor.-Amer. 2: 268. 1803
Synonyms: Athyrium asplenioides Athyrium filix-femina subsp. asplenioides (Michaux) Hultén
Treatment appears in FNA Volume 2.

Petiole 13–55 cm; scales light brown or brown, lanceolate, 6–9 × 2 mm, ± crisped. Blade ovate-lanceolate to lanceolate, 2-pinnate-pinnatifid, (18–)25–60 × (5–)10–30 cm, slightly narrowed proximally, broadest just above base to just below middle, apex acuminate or ± caudate. Pinnae usually stalked, oblong-lanceolate to lanceolate, base truncate, apex acuminate. Pinnules oblong-lanceolate to narrowly deltate, base unequally cuneate, apex ± acute. Rachis, costae, and costules glabrous or with scales or pale glands. Sori elongate, straight or hooked at distal end or horseshoe-shaped; sporangial stalks with glandular hairs; indusia ciliate, hairs glandular or nonglandular and ± as long as indusial width. Spores brown or dark brown. 2n = 80.


Habitat: Moist woods, thickets, swamps
Elevation: 10–2000 m

Distribution

V2 282-distribution-map.gif

Ala., Ark., Conn., Del., Fla., Ga., Ill., Ind., Kans., Ky., La., Md., Mass., Miss., Mo., N.J., N.Y., N.C., Okla., Pa., R.I., S.C., Tenn., Tex., Va., W.Va.

Discussion

Selected References

None.

Lower Taxa

None.
Masahiro Kato +
(Michaux) Farwell +
Nephrodium asplenioides +
Southern lady fern +  and lowland lady fern +
Ala. +, Ark. +, Conn. +, Del. +, Fla. +, Ga. +, Ill. +, Ind. +, Kans. +, Ky. +, La. +, Md. +, Mass. +, Miss. +, Mo. +, N.J. +, N.Y. +, N.C. +, Okla. +, Pa. +, R.I. +, S.C. +, Tenn. +, Tex. +, Va. +  and W.Va. +
10–2000 m +
Moist woods, thickets, swamps +
Pap. Michigan Acad. Sci. +
Athyrium asplenioides +  and Athyrium filix-femina subsp. asplenioides +
Athyrium filix-femina var. asplenioides +
Athyrium filix-femina +
variety +