Plants 30-65 cm tall. Rhizome erect or ascending, scaly; scales brown, narrowly triangular, margins subdentate. Fronds caespitose; stipe dull grayish brown to gray-green, semiterete, 13-30 cm, subglabrous, adaxially sulcate; lamina triangular to ovate, 21-36 × 10-20 cm, not much reduced at base, apex acute-acuminate, bipinnate; pinnae 12-18 pairs, subopposite to alternate, stalks 2-3 mm, basal pinnae largest or slightly reduced, narrowly triangular, 7-14 × 3.5-4.5 cm, apex variable, from acute to caudate, 1-pinnate; pinnules 4-8 pairs, anadromous, free to subsessile, from ovate-elliptic to rhombic or cuneiform, apex obtuse, basal acroscopic pinnule ± equal to basal basiscopic pinnule, basal pair largest, 1.5-3 × 1-1.3 cm, base nearly symmetrical, cuneate, distal segments decurrent on rachis, lateral sides entire, outer margin dentate to crenate. Costa obvious on both sides, raised abaxially, adaxially shallowly grooved with raised supravascular ridge, veins 2-or 3-forked and not reaching margin. Fronds herbaceous, brownish green when dry, subglabrous; rachis grayish brown to gray-green, adaxially sulcate, apical part of rachis often gemmiferous. Sori 1-4 per pinnule, not reaching margin, linear, 5-10 mm; indusia brownish, linear, membranous, entire, opening toward costa or costule, persistent.
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A fern which grows to 50 cm high. The rhizomes are scaly. The leafy fronds are 25 cm long. They are twice divided. The segments of the leaflets are not the same shape on both side of the midrib. The spore cluster under the leaf is about 5 mm long.
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