Plants 10-20(-30) cm tall. Rhizomes creeping, 2-2.5 mm in diam., densely scaly when young, soon naked; scales brown when young, becoming dark with age, broadly lanceolate, 2-4 × 0.9-1.3 mm, margin entire, scales with narrow central band of deep brown and opaque lumina, most other lumina transparent. Fronds ca. 1 cm apart; stipe usually chestnut-brown or straw-colored, 1-5(-7) cm, 1-1.3 mm in diam.; lamina greenish or yellowish green when dried, lanceolate or broadly lanceolate, 12-30 × 1-2.5(-3.5) cm, normally widest 1/3 from base, thinly leathery when dried, abaxially sparsely scaly along sides of main veins, base cuneate, decurrent, apex long caudate; costa raised on both sides, veinlets obscure. Sori orbicular, up to 5 mm in diam. when mature, very closely spaced, slightly contracted after maturity; paraphyses pale brown at middle, orbicular, 0.15-0.3 mm in diam.; lumina large.
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