Description from Flora of China
Plants terrestrial, ca. 60 cm tall. Rhizome long and creeping, ca. 3 mm in diam., with dense, long, chestnut-brown, acicular hairs. Fronds distant; stipe brown-straw-colored, 30-50[-70] cm, ca. 3 mm in diam., stipe, rachis, and rachillae abaxially with short brown hairs, adaxially almost glabrous; lamina green when dried, 2-pinnate, oblong-lanceolate in outline, 50-100(-125) × 30-50(-60) cm, herbaceous, with sparse, acicular, long hairs on both surfaces and along veins, glabrous between veins, apex acuminate; pinnae ca. 18 pairs, opposite at base, alternate distally, ca. 5 cm apart, obliquely spreading, with stalk ca. 5 mm, lanceolate, 10-20 × 3-5 cm, basal basiscopic pinna longer, base asymmetrical, basiscopically broadly cuneate to rounded, acroscopically truncate, apex slightly obtuse, rarely acute; pinnules 12 or 13 pairs, adjacent, stalked, oblong, 2-2.2 × ca. 1.1 cm, basiscopically pinnatifid, acroscopic ones slightly shorter at base, apex obtuse or acute; lobules obovate to oblong, basal acroscopic lobes largest, entire, with few notches, apex rounded. Veins slender, obvious abaxially, not distinct adaxially, pinnate, veinlets bifurcate or simple distally. Sori small; indusium brown, orbicular-reniform, hirsute.
Semi-shaded to shaded areas in broad-leaved forests; 700-1600 m. Taiwan [Japan].