Rhizome slender, much-branched, with or without hairs; stipites distant to approximate. Stipes 2-10 cm. or more long, slender, narrowly winged in upper portion, rarely throughout. Rhachis narrowly winged. Lamina 3-20 cm. or more long, narrow-ovate to deltoid, acute to acuminate, dark to lightish green, 3-4-pinnatifid; final segs linear, toothed, obtuse to truncate. Sori free, on short lateral segs to almost axillary. Indusium c. 3 mm. long, narrow-obovate, entire to minutely crenulate on margins, 2-valved to about halfway. Receptacle up to 10 mm. long, but often included.
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