Plants terrestrial, 1-1.2 m tall. Rhizome erect, short, thick, ca. 1.5 cm in diam., densely scaly at apex and stipes; scales stiff, dark brown, linear-lanceolate, up to 2 cm, entire, apices long acuminate. Fronds clustered; stipe castaneous, glossy, up to 60 cm, 8-10 mm in diam. Lamina 2-pinnate to 3-pinnatifid, brown when dried, pentagonal, ca. 60 × 60 cm, thinly papery, both surfaces glabrous, base cordate, apex acuminate; pinnae 4 or 5 pairs, subopposite, slightly oblique; rachises and costae brown-castaneous, occasionally with linear scales on abaxial side of rachises, densely hairy adaxially, sparsely hairy abaxially; basal pinnae largest, oblique-deltoid, 20-25 × ca. 20 cm, stalks ca. 3 cm, bases asymmetrical, rounded-cuneate, apices long acuminate, basiscopic pinnules obviously elongated and forming 1 pair of separate pinnules at base, pinnatipartite to broadly winged along costae; middle pinnae deltoid-lanceolate, 15-20 × 10-12 cm, bases symmetrical, rounded-cuneate, apices long acuminate, pinnatipartite to broadly winged along costae and forming falcate-lanceolate lobes; pinnules or lobes 8-10 pairs, interval 0.5-1 cm, sessile, basiscopic pinnules largest, falcate-lanceolate, 12-14 × 4.5-5 cm, pinnatipartite to 2/3; lobules 10 pairs, slightly oblique, interval ca. 2 mm, elliptic, 1.5-2 × ca. 1 cm, obtuse, entire. Veins copiously anastomosing, with narrow areoles beside rachises and costae, included veinlets simple. Sori orbicular, terminal on included veinlets, in 1 row on each side of midrib of ultimate lobes; indusia brown, large, clypeate, membranous, entire, persistent. 2n = 80.
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