Rhizome long creeping, slender, less than 1 mm in diam., densely scaly throughout; scales dark brown, clathrate, lanceolate, margin slightly dentate. Fronds closely spaced or distant, monomorphic; stipe very short or indistinct, green; lamina spatulate, oblanceolate, obovate, or linear-lanceolate, 4-10 × 0.4-1 cm, base decurrent, apex acute or obtuse; costa raised on both surfaces, veins hidden, areoles narrow, oblique, without free veinlets; lamina deep green, often glossy, paler abaxially, papery, glabrous. Sori 2-5 pairs along upper part of lamina, oblong, 0.3-1.5 cm, oblique to ± parallel to costa in narrow-fronded form, slightly sunken into lamina, paraphyses absent. Spores globose-trilete.
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