Plants terrestrial, 0.8-1 m tall. Rhizome creeping, long, 0.8-1 cm in diam., scaly at apex and stipe bases; scales dark brown and light glossy, pale along margins, lanceolate, 2-3 mm, thickly membranous, subentire, apices acuminate, caducous downward. Fronds widely spaced; stipe stramineous, 30-60 cm, 4-5 mm in diam., clothed with light brown articulate hairs above, glabrescent beneath. Lamina odd-pinnate, dark green when dried, ovate to oblong, 30-45 × 25-30 cm, papery, both surfaces glabrous, margin cartilaginous; rachises, costae, and lateral veins stramineous, pubescent adaxially, glabrescent abaxially, grooved adaxially and raised abaxially; terminal pinna ovate to oblong, entire, ca. 20 × 7-9 cm, stalk 2-3 cm, base broadly cuneate, apex caudate; lateral pinnae 2-4 pairs, simple, ovate-lanceolate, 18-20 × 5-6 cm, slightly oblique, opposite, subentire, interval 2-5 cm, bases slightly asymmetrically cuneate, apices abruptly caudate; basal pinnae shortly stalked, pinnae sessile toward apices. Veinlets forming conspicuous subhexagonal areoles, raised on both sides, included veinlets simple or forked. Sori orbicular, on anastomosing veins, in irregular 4-6 rows between lateral veins; indusia brown, orbicular, membranous, glabrous, entire, caducous.
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Caudex long-creeping, 6-10 mm diameter when dried, bearing stipes c. 1.5 cm apart, scales 5 × 1 mm, base cordate, dark glossy with paler fragile edges; stipe 30-80 cm long, lightly flushed with red, glabrescent, scales near base as those of caudex but 10 mm long; lamina consisting of 1-4 pairs of pinnae and pinna-like apex; apex to 21 × 11 cm, entire, base cuneate, apex abruptly short-acuminate; upper pinnae sessile, to 21 × 6 cm with asymmetric base rounded on the basiscopic side; basal pinnae stalked, to 30 × 10 cm, asymmetric with a single basiscopic lobe to 20 × 6 cm (largest fronds may have 2 pairs of pinnae with basal lobes); main veins pale on lower surface, 8-10 mm apart along costae, at a wide angle and upcurved, cross-veins irregular; lower surface of costae and main veins bearing sparse short hairs, upper surface of costae densely short-hairy; sori mostly not on free veins in areoles, rather small, in a single row on each side of main veins but with additional ones irregularly between the rows; indusia thin, shrivelling but persistent.
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