Plants evergreen. Rhizome erect or ascending, short, densely covered with linear brown scales. Fronds 40-60 cm; stipe yellowish brown, 15-23 cm, ca. 2.5 mm in diam. at base, densely covered with linear, lanceolate and larger scales; large scales bicolorous, blackish brown at middle and yellowish brown on margin, shiny, ovate or ovate-lanceolate, up to 13 × 6 mm, subentire, caudate. Lamina bipinnate, deltoid-ovate or deltoid-lanceolate, 28-52 cm, near basal part 9-18 cm wide, base slightly contracted, lower 1 or 2 pairs often sterile, apex acuminate, fertile; rachis without proliferous bulbils, abaxially covered with linear and lanceolate scales; lanceolate scales light brown to brown (rarely lower rachis scales bicolorous), subentire, acuminate. Pinnae 13-20 pairs, alternate, attached at right angles to rachis, shortly stalked, lanceolate, bases not contracted, asymmetrical, apices acuminate; lower pinnae 3.5-8 × 1-2 cm, 1-pinnate; costa covered with linear light brown or brown scales. Pinnules 14-22 pairs, alternate, shortly stalked, falcate-deltoid to narrowly oblong, 0.8-1.3 cm × 4-7 mm, bases cuneate, with rounded auricles acroscopically, margins entire or subentire, apices acute, often shortly aristate; basal acroscopic pinnules largest, deeply incised or pinnatilobate; adaxially subglabrous, abaxially sparsely covered with shortly filiform microscales; frond texture papery; venation pinnate, lateral veins 5-8 pairs, dichotomous, distinct. Sori 5 or 6 pairs per pinnule, in 1 row on each side of midrib, submarginal, terminal on veinlets; indusia present, shallowly toothed. 2n = 164.
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