Plants evergreen. Rhizome erect or ascending, short, densely covered with linear reddish brown scales. Fronds 1-1.5 m; stipe stramineous, 60-75 cm, 7-10 mm in diam. at base, densely covered with linear and lanceolate brown scales and larger scales; large scales grayish brown and bicolorous, broadly ovate and broadly ovate-lanceolate; bicolorous scales dense, middle part dark brown to blackish brown, shiny, up to 18 × 10 mm, shortly serrulate, caudate. Lamina bipinnate, oblong, 66-96 × 24-47 cm at middle, slightly contracted toward base, apex abruptly narrowed, fertile; rachis without proliferous bulbils, densely covered with linear dark brown scales, and sparsely covered with lanceolate grayish brown scales, latter up to 10 × 3 mm, serrulate, acuminate. Pinnae 10-17 pairs, alternate, ascendant, shortly stalked, lanceolate, apices caudate, basiscopic margins slightly contracted toward base, bases asymmetrical, middle pinnae 14-20 × 4.6-5.7 cm, 1-pinnate; costa scaly; scales grayish brown or blackish brown, linear or lanceolate. Pinnules 15-19 pairs, alternate, shortly stalked, deltoid-ovate, 2.1-4 × 0.8-1.6 cm, bases cuneate, acroscopic bases with semi-orbicular auricles, apices acute and mucronate, margins with obtuse teeth, tips of teeth not aristate; basal acroscopic pinnules largest, pinnatipartite; abaxially with lanceolate microscales, adaxially subglabrous; frond texture leathery; venation pinnate on pinnules, lateral veins 8-10 pairs, dichotomous, distinct. Sori numerous per pinnule, in several rows on each side of midrib, terminal on veinlets, sometimes nearly terminal, brown, large; indusia small.
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