Plants 7-21 cm tall. Rhizomes creeping, 2-3 mm in diam., densely scaly; scales dark brown, iridescent, lanceolate to ovate-lanceolate, 3-3.5 × 0.9-1.2 mm, clathrate, brittle, sometimes with a tuft hair, margin with long and thick spines, apex long acute; lumina polygonal, isodiametric, transparent. Fronds closely spaced, to 1 cm apart; stipe straw-colored, 0.5-6 cm, ca. 1 mm in diam., smooth; lamina grayish brown to gray-green on both surfaces or abaxially brownish when dried, lanceolate or linear-lanceolate, 4-20 × 0.5-1.5 cm, widest at or slightly below middle, thinly papery to thinly leathery, base cuneate, decurrent, margin straight, flat or slightly revolute, apex obtuse to bluntly acuminate; costa raised on both sides, veinlets obscure. Sori along distal 1/2-2/3 of lamina, ± equidistant between costa and margin or nearer costa, orbicular or suborbicular, ca. 2 mm in diam., clearly separated; paraphyses dark brown, small, stellate or lanceolate, margins with long spines; lumina large and transparent, irregular or oblong.
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