Rhizome creeping, succulent at growing apex, 0.8-1.2 cm in diam., moderately scaly; scales pale brown, lanceolate or linear-lanceolate, 7-9 × 2-4 mm, thin and soft. Fronds remote, 0.4-1.1 m; stipe stramineous, 20-55 cm, 3-6 mm in diam., base scaly as rhizome, upward scales diminishing to glabrescent; lamina 2-or 3-pinnate, brownish green when dried, oblong-ovate, 20-60 × 15-40 cm, relatively soft, papery, base cuneate, cordate, or hastate, apex abruptly caudate and forming a conform terminal pinna, rachis with sparse linear scales or glabrescent; lateral pinnae (1-)4-8 pairs, alternate, with 1-1.5 cm stalk, obliquely spreading; lowest ones deltoid-lanceolate, 15-25 × 5-9 cm, base rounded-cuneate, apex acuminate; primary pinnules 10-25 pairs, shortly stalked, proximal basiscopic 1 or 2(or 3) elongated (or not), basal acroscopic one occasionally also longer; (simple primary pinnules and) secondary pinnules 5-15 pairs, rhombic-oblong, 0.8-2.2 × 0.5-1 cm, base acroscopically truncate, basiscopically cuneate, apex acute and aristate, margin especially acroscopic side sharply serrate, aristate; upper 1 or 2 pairs of pinnae sometimes with proximal 1(or 2) pinnules longer, other pinnae linear-lanceolate; glabrescent on both surfaces or axes and veins sparsely with brown linear minute scales abaxially. Sori terminal on veinlets, closer to margin than to midvein, 1-7 pairs per ultimate segment; indusia brown, membranous, and ciliate. 2n = 82*.
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