Rhizome rather slender, with scattered hairs when young; stipites rather distant. Stipes 5-15 cm. long, rather slender, glab., very narrowly winged for some distance, or wingless. Rhachis slender, narrowly winged, sts obscurely so in lower part. Lamina 5-15 cm. long, bright green, ovate-deltoid to lanceolate, acuminate; 3-4-pinnatifid; final segs linear, not crowded, obtuse to retuse; margins partly 2-celled, especially in sinuses. Sori us. ∞, free. Indusium hardly 1 mm. long, 12-valved to base; valves entire to crenulate. Indusia often paired, the pairs sometimes fused, but retaining two receptacles. Receptacles not exserted or hardly so.
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