Rhizome long creeping, with shiny castaneous lanceolate scales. Fronds 45-80 cm; stipe stramineous, 25-40 cm, 2-4 mm in diam., base with scales similar to those on rhizome, upward with a few dull brown lanceolate scales, or glabrescent; lamina 3-pinnate-pinnatifid, shiny or yellowish green when dried, deltoid-pentagonal, 23-40 × 16-30 cm, herbaceous, long acuminate toward apex, rachis glabrescent; pinnae ca. 15 pairs, alternate or lowest pair opposite, obliquely spreading; lowest pinnae ovate-lanceolate, 12-25 × 9-12 cm; primary pinnules ca. 15 pairs, stalked, deltoid-lanceolate, to 4.5 × 2 cm (basal basiscopic one largest), apex obtuse; secondary pinnules 5 or 6 pairs, oblong, ca. 1.4 × 0.6 cm, base obliquely cuneate, margin deeply pinnatifid; lobes 2-4 pairs, basal acroscopic one almost free, oblong, apex with 2 or 3 blunt teeth; upper pinnae gradually reduced; axes and main veins adaxially with pale gray unicellular acicular hairs, veins abaxially with a few appressed and narrowly lanceolate, flat-based scales. Sori small, 2-4 per ultimate segment; indusia brown, margin acicular ciliate.
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