Plants 60-70 cm tall. Rhizome suberect to creeping, with narrowly ovate-triangular, dark brown scales with narrow pale margin, up to 3 mm. Fronds approximate, subcaespitose; stipe dull grayish brown to stramineous, 15-25(-35) cm, with scales similar to those on rhizome; lamina narrowly triangular-ovate, 35-40(-45) × (10-)13-22 cm, 1-pinnate, apex triangular and pinnatifid, acute to acuminate; pinnae 12-20 pairs, subopposite, shortly stalked (2-3 mm), basal pinnae only slightly reduced, largest pinnae (8-)10-14 × 1.5-3 cm, narrowly trapeziform-trullate and slightly falcate, base asymmetrical, acroscopic side truncate and often auriculate, basiscopic side narrowly cuneate, margin irregularly crenate-sinuate to crenate-serrate, apex acute-acuminate. Costa slightly sinuous, raised abaxially, adaxially with 2 ridges and sulcate; veins slender, 2-or 3-forked. Fronds firmly herbaceous, glaucous to yellowish brown-green or grayish green when dry, abaxially with minute, brown, hairlike scales; rachis grayish green to stramineous, with sparse scales, narrowly winged below apex, often gemmiferous below terminal segment. Sori linear, (0.8-)1-2 cm, usually on acroscopic vein, at an angle of 10°-25° with costa; indusia grayish brown, linear, membranous, margin with thin hyaline cells, entire, usually opening toward costa, rolling back and erose but persistent. Spores with average exospore length 30-35 µm, perispore echinate.
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