Plants 48-75 cm tall. Rhizome ascending, short, stout, scaly. Stipe 15-30 mm in diam., lower part densely clothed with dark brown, lanceolate scales, sparsely scaly upward throughout rachis. Lamina ovate, 30-45 × 26-34 cm, quadripinnate, apex slightly acute; pinnae 4 or 5 pairs; basal 1(or 2) pinnae largest, opposite, oblong-lanceolate, 14-25 × 8-15 cm, base inequilateral, stipitate, apex acute; upper ones alternate, tripinnate; first pinnules 12-16 pairs, alternate, stipitate. Basiscopic pinnules larger than acroscopic ones; basal pinnule oblong-lanceolate, 5-12 × 2.6-5.2 cm, bipinnate, base inequilateral, apex acute; secondary pinnules ca. 15 pairs, oblong; basal pinnule ca. 3 × 1.1 cm, pinnate; ultimate pinnules 8 or 9 pairs, oblong, ca. 7 × 2 mm, obtusely dentate on upper margin and apex. Veins in ultimate pinnule pinnate; veinlets forked or simple, running to lamina margin, visible abaxially. Sori orbicular, abaxial on top of veinlets, at basal part of segment, in 1 row at each side of costa; indusia dark brown, orbicular, thickly membranous, fugacious.
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