Rhizome shortly creeping, densely scaly; scales grayish brown to dark brown, thin, linear-lanceolate, 5-10 × 0.5-1.2 mm, margin entire, apex acuminate; cells longer than wide. Fronds closely spaced, monomorphic; stipe indistinct, or very short and narrowly winged; lamina abaxially paler, adaxially deep green, narrowly elliptic to oblanceolate, 10-60 × 0.8-6 cm, thick and fleshy, curled up when dry, glabrous, base attenuate and decurrent onto stipe, apex long acuminate; costa raised abaxially, flat adaxially, straw-colored or pale green; veins hidden, anastomosing with free included veinlets. Sori linear, up to 6 cm, very oblique, well spaced, continuous from near costa to margin of frond, superficial; paraphyses many, dense, soft, longer than sporangia, completely covering sori at early stage. Spores ellipsoid-monolete.
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