Plants terrestrial, ca. 1.5 m tall. Rhizome erect, short, stout, 2-3 cm in diam., scaly at apex and stipe bases; scales brown, lanceolate, 5-6 mm, entire, apices acuminate. Fronds clustered; stipe black, glossy, ca. 60 cm, ca. 1 cm in diam., upper side sparsely covered with light brown articulate hairs and glabrous beneath. Lamina tripinnate or quadripinnatifid, dark green when dried, deltoid, ca. 80 × 60 cm, thinly papery, glabrous on both sides, apex acuminate; rachises, costae, and main veins black and glossy, densely covered with light brown articulate hairs; pinnae 6 pairs, oblique, basal ones opposite and alternate upward, interval ca. 6 cm; basal pinnae rather large, deltoid, 40-50 × 25-30 cm, stalks 3-5 cm, pinnules ca. 8 pairs, broadly lanceolate, 10-20 cm, alternate, upward, sessile, lower 1 or 2 pairs separate and adnate to costae, confluent with broad wings upward, interval 1-3 cm, pinnatifid, segments 5-10 pairs, falcate-lanceolate, 3-5 ×1-1.5 cm, undulate or entire; lateral pinnae lanceolate, 12-15 cm, bases attenuate, narrowed to and adnate with rachises, apices acuminate, pinnatifid to falcate-lanceolate lobes. Veinlets copiously forming subhexagonal areoles, main veins and veinlets clothed with brown articulate hairs, included veinlets simple or forked. Sori orbicular, terminal on included veinlets, in a single row along main veins; indusia brown, reniform, membranous, entire, persistent.
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