Plants 5-10 cm tall. Rhizomes creeping, 2-3 mm in diam., densely scaly; scales deep brown, lanceolate with broadly ovate base, to 2 × 1 mm, margin with long and thick spines, apex extended into long awn; lumina subsquare or shortly rectangular, large and transparent. Fronds to 1 cm apart; stipe (1-)2-10 cm, slender, ca. 1 mm in diam., smooth; lamina greenish to dark green or grayish brown or yellowish on both surfaces when dried, linear-lanceolate, 5-22(-29) × 0.4-2(-2.6) cm, widest at middle, herbaceous to papery, glabrous or abaxially sparsely scaly, base cuneate, decurrent, margin flat and straight or slightly undulate, apex obtuse; costa raised on both sides, veinlets obscure. Sori along distal 1/3-1/2 of lamina, slightly closer to costa, ± orbicular, ca. 2 mm in diam.; paraphyses deep brown, stellate or lanceolate, margins with long, thick spines; lumina large and transparent, irregular or oblong.
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