Difference between revisions of "Athyrium filix-femina var. angustum"
Edinburgh New Philos. J. n.s. 19: 115. 1864.
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|publication year=1864 | |publication year=1864 | ||
|special status=Illustrated;Endemic | |special status=Illustrated;Endemic | ||
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|genus=Athyrium | |genus=Athyrium | ||
|species=Athyrium filix-femina | |species=Athyrium filix-femina | ||
Revision as of 21:22, 5 November 2020
Petiole (7–)15–55 cm; scales brown to dark brown, linear-lanceolate, 8(–10) × 2 mm. Blade elliptic, 2-pinnatifid to 2-pinnate, (20–)30–75 × (5–)10–35 cm, moderately narrowed proximally, broadest near or just below middle, apex acuminate. Pinnae short-stalked or sessile, oblong-lanceolate. Pinnules decurrent onto costal wing or sessile, linear to oblong, base unequally cuneate, apex obtuse to acute or in larger leaves acuminate, lobed halfway or more to costules. Rachis, costae, and costules glabrous or with pale glands. Sori straight, less frequently hooked at distal end or horseshoe-shaped; sporangial stalks bearing glandular hairs; indusia irregularly dentate, ± ciliate. Spores yellow or brown. 2n = 80.
Habitat: Moist woods, swamps, thickets
Elevation: 0–1100 m
Distribution
Greenland, Man., N.B., Nfld. and Labr. (Nfld.), N.S., Ont., P.E.I., Que., Sask., Conn., Del., Ill., Ind., Iowa, Maine, Md., Mass., Mich., Minn., Mo., Nebr., N.H., N.J., N.Y., N.C., N.Dak., Ohio, Pa., R.I., S.Dak., Vt., Va., W.Va., Wis.
Discussion
Selected References
None.