Rhizome long creeping, bearing brown ovate-lanceolate scales. Fronds 0.8-1 m; stipe purplish brown at base, upward gradually ochraceous or stramineous, 20-60 cm, 2-5 mm in diam., glabrescent or with a few scales similar to those on rhizome; lamina 4-or 5-pinnate, brownish green when dried, pentagonal-ovate, 29-48 × 27-40 cm, herbaceous, abruptly narrowed toward apex and acuminate, rachis glabrescent; pinnae ca. 10 pairs, alternate, obliquely spreading; lowest pinnae ovate-lanceolate, 16-28 × 8-16 cm, apex acuminate; primary pinnules 8-10 pairs, ovate-lanceolate, 5-13 × 2.5-6 cm (basal basiscopic one largest), apex acuminate; secondary pinnules ca. 12 pairs, shortly stalked, ovate-lanceolate, to 3.5 × 1.2 cm; tertiary pinnules 6 or 7 pairs, ovate-oblong, to 1 × 0.5 cm, basal acroscopic one largest, margin pinnatifid or coarsely serrate, or pinnatisect in 5-pinnate lamina; upper pinnae gradually reduced; axes and main veins adaxially with pale gray unicellular acicular hairs, veins abaxially with sparse linear-lanceolate or hairlike, flat-based scales. Sori small, 1-4 per ultimate segment, medial between main vein and margin; indusia brown, margin entire to acicular ciliate.
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