Plants terrestrial, 70-80 cm tall. Rhizome erect, short, ca. 1 cm in diam., densely scaly at apex; scales brown, broadly lanceolate, 4-5 mm, membranous, margins entire, apices acuminate. Fronds clustered; stipe deep castaneous to black, glossy, 30-40 cm, grooved above, occasionally clothed with lanceolate brown scales at base, with sparse light brown articulate hairs upward. Lamina bipinnatifid, dark brown when dried, elliptic, 40-50 × 20-25 cm, herbaceous, with sparse articulate brown hairs on both surfaces or abaxially glabrescent and adaxially with a few hairs, base retuse, margins ciliate, apex acuminate; rachises deep castaneous to black, glossy, ± clothed with articulate brown hairs; costae brown at base, stramineous upward, clothed with brown, articulate hairs; lateral pinnae 12-15 pairs, subopposite or alternate upward, interval 1.5-2 cm, applanate, subsessile; basal pinnae not shortened, reflexed, falcate-lanceolate, 10-12 × 4-4.5 cm, bases cuneate, apices acuminate, pinnatipartite nearly to costa; lobes 12-15 pairs, undulate or serrate, basal lobes shortened, middle lobes elongate toward base of lamina, ultimate ones acuminate; upper pinnae lanceolate, 10-12 × ca. 3 cm at base, pinnatipartite to 2/3, lobes ca. 15 pairs, subapplanate, interval 2-3 mm, ovate, 1.2-1.5 × 4-5 mm, obtuse, entire to undulate. Veins free, pinnate, 5 or 6 pairs, veinlets forked. Sori orbicular, terminal on veinlets, in 1 row between main veins and margin; indusia brown, orbicular-reniform. 2n = 80.
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