Small grasslike plants, fronds filiform. Rhizome less than 1 mm thick, creeping, stipes ca. 1 mm apart. Scales dark brown, clathrate, lanceolate, 0.8-1.25 × 0.25-0.5 mm, margin denticulate. Fronds clustered; lamina filiform, 3-12 cm × 0.5-1 mm, base long attenuate, apex acute, without lateral vein. Sorus solitary along groove in costa, elongate, not interrupted, covered by raised margins of costa, fertile medially, swollen when mature; paraphyses filiform, without a head. Spores trilete, surface ornamentation obscure.
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