Plants 1-15 cm tall. Rhizome brown to dark brown or reddish brown, 0.2-0.5 mm in diam., with sparse brownish hairs or subglabrous, with hairy roots. Stipes remote, 1-4 cm apart, dark brown or brown, filiform, 0.5-6 cm, wingless or narrowly winged at apex, with sparse reddish brown hairs. Rachis dark brown, winged throughout or at apex. Lamina 1-3-pinnate, ovate or oblong to lanceolate, 1.5-12 × 1-4 cm, membranous and semitransparent, glabrous, base subcordate or rounded-cuneate, apex obtuse; pinnae 3-12 pairs, slightly imbricate to neighboring ones, alternate, sessile, widely spreading, oblong to obovate or oblong-ovate, 0.5-2.5 cm × 3-11 mm; ultimate segments linear or oblong, 2-6 × 0.6-2 mm, with 1(or 2) veinlets, margin subentire to serrulate, apex obtuse. Veins dichotomous, dark brown, obviously raised on each surface. Sori on upper parts of frond, terminal on short segments; involucres ovate to oblong, 1.5-2 × ca. 1 mm, slightly serrate and obtuse or rounded at apex; receptacles usually included. 2n = 42.
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