Plants more than 1 m tall. Stipes ebony or chestnut-brown, slightly shiny, 45-60 cm, 3-5 mm in diam., with brown articulate hairs, abscising when old, leaving scabrous marks; rachis abaxially and stalks concolorous, gradually discolored upward, sparsely hairy, scabrous; rachillae chestnut-brown, glabrous. Lamina dark green when dried, 3-pinnate, ovate-oblong in outline, 60-70 × 24-28 cm, papery, both surfaces glabrous, apex attenuate; pinnae 15-20 pairs, almost opposite, lower 1-3 pairs distant, 7-10 cm apart, closer upward, 4-5 cm apart, spreading obliquely upward, with stalk 5-10 mm and brown hairy, middle pinnae broadly lanceolate or oblong in outline, usually 16-20 × 6-8 cm, base symmetrical, apex acuminate; pinnules 14-18 pairs, alternate, 1-1.2 cm apart, shortly stalked, anadromous, flat, narrowly lanceolate, 3-4.5 × ca. 1 cm wide at base, gradually shorter upward, base asymmetrical, basiscopic base obliquely cuneate, acroscopic base auriculate, pinnatisect almost to costa, notched at wide interval, apex long and acuminate; ultimate pinnae elliptic or subovate, 1-3-lobed; lobules entire, sharp or obtuse at apex. Costa obvious, lateral veins pinnate and furcate, impressed adaxially, slightly prominent abaxially, each lobule with one veinlet, not reaching lobule margin, with fusiform hydathode at apex. Sori orbicular, terminal on lobule apex; indusium green, small bowl-shaped, thick, glabrous, entire.

● Yunnan.