Rhizomes stramineous, 1-1.2 cm in diam., densely scaly, naked when old; scales dark brown, broadly lanceolate, ca. 6 × 1.5-2 mm, base peltate, margin toothed, apex acuminate. Fronds dark green when dry, thickly papery, both surfaces glabrous; stipe stramineous, 15-25 cm, grooved adaxially, scaly; sterile lamina pinnate, elliptic, 50-60 × 22-25 cm, shortly stalked; pinnae ca. 20 pairs, 3-3.5 cm apart, narrowly lanceolate or sublinear, 22-26 × 1.2-1.5 cm, with stalk ca. 8 mm, articulate to rachis, base subequal, narrowly cuneate, margin entire, apex acuminate; veins obvious on both surfaces, free, simple or forked, spreading, unequally spaced, occasionally anastomosing to form small elliptic areoles. Fertile lamina similar to sterile lamina; pinnae much contracted, linear, 18-26 × 0.25-0.3 cm, basal pinnae with stalk ca. 8 mm. Sori acrostichoid.
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