Plants 10-20 cm tall. Rhizomes long and creeping, 1.5-2 mm in diam., densely scaly; scales dark brown with pale margins, iridescent, lanceolate, 2-3 × 0.5-1 mm, very thin, margin denticulate, scales with narrow opaque black belt in center, sometimes completely transparent, marginal 2 or 3 rows of cells subrectangular, transparent. Fronds 0.5-1 cm apart; stipe straw-colored, 0.5-3 cm, 0.5-1 mm in diam.; lamina greenish when dried, linear or linear-lanceolate, 10-25 × 0.3-0.5(-4) cm, widest at middle, thinly leathery, sparsely scattered with small scales, leaf scales with distinct and large lumina, base attenuate, decurrent, margin flat or only slightly revolute, apex acuminate; costa raised on both sides, veinlets obscure. Sori on distal 1/3-1/2 of lamina, midway between costa and margins, orbicular, 2-3.5 mm in diam.; paraphyses brown, orbicular; lumina transparent, almost square.
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