Plants evergreen. Rhizome erect or ascending, short, densely scaly; scales brown, filiform. Fronds 40-60 cm; stipe stramineous, 11-26 cm, 4-6 mm in diam. at base, densely covered with linear and lanceolate brown scales and larger scales; large scales dense, bicolorous, middle part blackish brown, margins brown, shiny, broadly ovate and broadly ovate-lanceolate, up to 30 × 10 mm, subentire, long acuminate. Lamina bipinnate, deltoid-ovate, 21-47 × 11-22 cm near basal part, not contracted toward base, acute or slightly acuminate; rachis without proliferous bulbils, densely covered with linear, lanceolate brown scales and larger scales; large scales dense, shiny, broadly ovate and broadly lanceolate, up to 10 × 6 mm, subentire, caudate. Pinnae 16-27 pairs, alternate, ascendant, shortly stalked, lanceolate, not contracted toward base or only basiscopic side slightly contracted, bases asymmetrical, apices acuminate; middle pinnae 1-1.9 cm apart, basal pairs 8-16 × 1.8-2.8 cm, 1-pinnate; costa scaly; scales brown, linear or lanceolate. Pinnules 13-25 pairs, alternate, shortly stalked, oblong, 0.7-1.1 cm × 3-4.6 mm, bases cuneate, acroscopic margins obtuse-toothed, apices acute and mucronate; bases with rounded auricles, basiscopic margins shallowly toothed, tips of teeth shortly spinulose, basal acroscopic pinnules largest, pinnatilobate; abaxially with few lanceolate microscales, adaxially subglabrous; frond texture thinly leathery; venation pinnate on pinnules, lateral veins 6-8 pairs, dichotomous, distinct. Sori (2 or)3-5 pairs per pinnule, in 1 row on each side of midrib, terminal on veinlets, dark brown; indusia brown, membranous, irregularly toothed.
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