Description from Flora of China
Microlepia herbacea Ching & C. Christensen var. trichosora (Ching) Serizawa; M. hispida C. Christensen; M. trichosora Ching.
Plants terrestrial. Rhizome creeping, black-brown, ca. 5 mm in diam., with dense, red-brown, acicular hairs. Fronds remote; stipe brown, 25-35 cm, 3-4 mm in diam., with dense, long, spreading, gray, acicular hairs, abscising to leave coarse marks; lamina brown-green when dried, 2-pinnate, oblong in outline, 30-60 × 20-30 cm, herbaceous, apex caudate acuminate; pinnae 18-25 pairs, alternate, 5-6 cm apart, with stalk 3-5 mm, slightly shorter at base, 1-pinnate, lanceolate, 12-18 × 3.2-3.6 cm, base subtruncate, parallel to rachis, apex acuminate; pinnules 20-30 pairs, adjacent, almost sessile, oblong, base asymmetrical, basiscopically cuneate, acroscopically truncate, slightly auriculate, margin pinnatifid to 1/3-1/2 of lobes, apex rounded or obtuse; lobules broad, with 1 or 2 coarse obtuse teeth at apex; pinnae progressively shorter toward apex, merging to form long acuminate or almost caudate terminal segment. Veins obvious on both surfaces, pinnate, veinlets simple. Sori at notch base; indusium hemitelioid, with dense, long, gray, acicular hairs, not easily seen.
Forests; 500-1500 m. Guangdong, Guangxi, Guizhou, Taiwan, Yunnan [NE India (Darjeeling), Nepal].