Rhizomes slender, creeping, 1-2 mm in diam., with sparse dark brown ovate-lanceolate scales. Fronds distant; fertile fronds 10-25 cm; stipe stramineous, 5-15 cm, ca. 1 mm in diam., base with sparse dark brown lanceolate scales, upward glabrate; lamina pinnate, ovate-oblong, 6-13 × 4-6 cm, apex acuminate; lower pinnae narrowly lanceolate, ascending, sessile, pinnatipartite, basal acroscopic pinna segments slightly larger; pinna segments 5-10 pairs, subopposite, slightly ascending, oblong, toothed at margin; veins pinnate in segments. Lamina herbaceous when dried, green, glabrate, with needlelike spines on adaxial side at base of costule, midrib, and lateral veins. Sori lateral on base of midribs; indusia erose at margin. Perispore surface without folds.
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