Rhizomes long creeping, ca. 2 mm in diam., rhizome and stipe bases densely clothed with red-brown short hairs, and few pale brown, broadly ovate, membranous scales. Fronds distant; fertile fronds (20-)50-60 cm; stipe pale stramineous or brownish red, shiny, (10-)20-32 cm, 1-2 mm in diam., with few pale brown, broadly ovate, membranous scales mixed with short hairs at base; lamina 3-pinnate, ovate to narrowly ovate-oblong, (10-)20-33 × (5-)10-15(-25) cm, thinly herbaceous or submembranous when dried, apex long acuminate; pinnae (10-)12-15(-17) pairs, ascending, subopposite, basal pinnae longest, deltoid-lanceolate, (5-)8-14 × 2.5-4.5 cm, base inequilateral, with stalk 3-5(-8) mm, apex caudate-acuminate, (3-)5(-7) cm apart from second basal pinnae; pinnules 8-12 pairs, anadromous, alternate, usually acroscopic one slightly smaller than basiscopic one, second basal basiscopic pinnules largest, narrowly ovate or narrowly triangular, 1.5-2.5(-4) × 1-1.5 cm, base very inequilateral, acroscopic base narrowly cuneate, parallel to costae, basiscopic base broadly cuneate, very shortly stalked or subsessile, apex acute or subobtuse and toothed; secondary pinnules or pinnule segments 3-5 pairs, basal acroscopic one largest, oblong or ovate, rounded-obtuse or subtruncate at apex, toothed at apex and margin; veins visible on surfaces, more obvious abaxially, simple or 1-or 2-forked, terminating in emarginations. Sori brown, orbicular, abaxial suprabasally, 1 or 2 sori per ultimate segment; indusia pale brown, orbicular or half cup-shaped, membranous, without tiny glandular hairs, covering sporangia when young, hidden at maturity. Perispore echinate. 2n = ca. 84*.
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