Rhizome rather slender, densely clad when young in bristly hairs; stipites distant to approximate. Stipes 5-10 cm. long, rather slender, furnished nearly to base with broad crenulate, ± crisped, wing. Rhachis slender, crenulately winged. Lamina 3-15 cm. long, bright green, darkening with age, broadly triangular, us. acuminate, 2-3-pinnatifid; final segs linear to linear-lanceolate, obtuse, somewhat undulate. Sori often ∞, free. Indusium 1-1·5 mm. long, suborbicular, 2-valved to base; valves entire, rounded. Receptacle not exserted.
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