Plants evergreen. Rhizome erect or ascending, short, densely covered with linear brown scales. Fronds 60-120 cm; stipe yellowish brown, 34-62 cm, 4-6 mm in diam. at base, densely scaly; scales angled upward and slightly appressed to stipe, linear, subulate, or lanceolate and mixed with larger scales; large scales dense on lower stipe, dark brown, shiny, ovate and ovate-lanceolate, up to 20 × 3-8.5 mm, densely and regularly toothed and ciliate, caudate. Lamina bipinnate, deltoid-ovate, 48-74 × 20-35 cm near base, slightly contracted toward base, lower part sterile, apex acute, fertile; rachis without proliferous bulbils, densely scaly; scales dark brown, linear, subulate, and lanceolate, ciliate on margin, lanceolate scales caudate at apex. Pinnae 13-18 pairs, alternate, ascendant, shortly stalked, lanceolate, bases asymmetrical, apices caudate; lower pinnae 15-23 × 3.5-5.5 cm, 1-pinnate; costa scales dark brown, linear and subulate. Pinnules 12-20 pairs, alternate, shortly stalked, falcate-deltoid, bases cuneate, acroscopic bases with rounded auricles, margins with acute, shallow or deep teeth, apices acuminate; basal acroscopic pinnules (but not lowermost 3 or so) largest, pinnatilobate; abaxially with dense long-filiform microscales, adaxially with sparse microscales; frond texture papery; venation pinnate, lateral veins 5-9 pairs, dichotomous, distinct, adaxially with oblong hydathode terminal on veinlets. Sori 5-20 per pinnule, in 1 row on each side of midrib, terminal on veinlets; indusia present, irregularly lacerate.
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