Plants 30-45(-65) cm tall. Rhizome erect, short, apex scaly; scales dark brown to black, narrowly triangular, ca. 6 × 1 mm, entire. Fronds simple and clustered; stipe stramineous, 5-8(-15) cm, base with scales, becoming subglabrous above; lamina narrowly lanceolate, 20-40(-50) × 1.5-2.5(-4) cm, base decurrent on stipe, margin entire to repand, apex acuminate to caudate. Midrib stramineous, abaxially semiterete and raised, adaxially sulcate; veins obscure, 1-forked. Fronds leathery, yellowish green or brownish when dry, subglabrous. Sori linear, 1.3-2(-3) cm, starting close to midrib at an angle of 15°-25°(-30°), on acroscopic veinlets; indusia yellowish brown or brownish green and becoming dark brown when dry, linear, papery, margin composed of thin-walled hyaline cells, fimbriate to entire, opening toward midrib, persistent. Spores without perforations in outer cristate-alate perispore. Plants sexual tetraploid: 2n = 144.
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A fern. It grows 30-45 cm tall. It has a short erect rhizome. The fronds are simple and clustered. The leaves are narrowly sword shaped and 20-40 cm long by 1.5-2,5 cm wide.
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