Rhizomes shortly creeping, ascending at apex. Fronds subcaespitose; fertile fronds 50-95 cm; stipe upward stramineous, 20-35 cm, 3-4 mm in diam. at base, base with sparse dark brown lanceolate scales, upper part glabrate; lamina 2-pinnatipartite, oblong, 30-60 × 20-25 cm, slightly narrowed to base, acuminate at apex; pinnae 12-18 pairs, alternate, subsessile, slightly ascending, broadly lanceolate, pinnae below middle 12-20 × 3-4 cm, base subequilateral, truncate or rounded-cuneate, pinnatipartite, apex caudate-acuminate; segments falcate-oblong, 2-2.5 cm × 6-8 mm, margin incised-toothed, apex obtuse-rounded or shortly acute; upper pinnae gradually shorter, pinnatifid to pinnatipartite; segments oblong or rhomboid, entire or serrate. Veins pinnate in segment, lateral veins 8-10 pairs, 2-or 3-forked. Lamina herbaceous when dried, dark green, rachis and costae with sparse brown broadly lanceolate small scales and scalelike vermiculate hairs. Sori shortly oblong, sometimes curved, J-shaped, or horseshoe-shaped, inframedial; indusia brown, elongate, occasionally J-or horseshoe-shaped, membranous, lacerate into cilia at margin, persistent. Perispore with many rugate folds. 2n = 240*.
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