Rhizomes long creeping, 2-3 mm in diam., densely clothed with brown ovate-lanceolate membranous scales at apex. Fronds distant; fertile fronds (9-)20-25(-40) cm; stipe upward stramineous, shiny, often pale purplish red, (4-)6-10(-23) cm, 1-3 mm in diam., with sparse scales at base; lamina 1-3-pinnate, ovate to ovate-oblong, (5-)11-17(-25) × (3-) 5-9(-20) cm, acuminate; pinnae 10-13(-16) pairs, alternate, lower pinnae sometimes subopposite, basal 1 or 2 pairs slightly shorter, with stalk (stalk 1-2(-4) mm), ascending, curved upward, (1-)1.5-2(-4) cm apart; middle pinnae (1.5-)3-6(-11) × (0.8-)1.5-2.4(-4) cm, oblong-lanceolate, subequilateral at base; pinnules less than 6-10 pairs, broadly ovate to ovate-lanceolate, approximate; basal pinnules 8-10 × 5-8 mm, sharply toothed, inequilateral at base, acroscopic side parallel to costae, basiscopic side narrowly cuneate, slightly decurrent to costa wings, all anadromous, basal 1 or 2 pairs of pinnules of lowest pinnae sometimes slightly shorter; secondary pinnules or segments 3 or 4(-8) pairs, elliptic to oblong, 3-4(-7) × ca. 2 mm, oblong, toothed, dissected at margin; ultimate segments with 2 or 3 teeth. Veins visible abaxially, pinnate per pinnule or segment, terminating in teeth. Lamina herbaceous or near papery when dried, dark green, rachis and costae usually pale purplish red, glabrate or shortly glandular hairy. Sori small, orbicular or orbicular-reniform, 1-3 sori per ultimate pinnule, abaxial on or semilateral to basal acroscopic veins; indusia brownish, orbicular-reniform, lacerate with ciliate margin. Perispore thin and hyaline, slightly folded. 2n = ca. 80.
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