Rhizome creeping, up to 6 mm in diameter, set with reddish brown rhizome scales. Basal pinnae reduced in size. Fronds closely spaced. Stipe up to 0.38 m long. Lamina oblong-lanceolate, up to 0.70 x 0.28 m, deeply 3-pinnatifid. Sori oblong, curved to J-shaped.
Rhizome creeping, up to 6 mm in diameter, set with reddish brown, lanceolate-acuminate rhizome-scales up to 7 mm long. Fronds closely spaced, erect, herbaceous; stipe pale brown when dry, dark brown and set with scales basally, otherwise glabrous, up to 0.38 m long; lamina oblong-lanceolate, acute to acuminate, up to 0.7 x 0.28 m, deeply 3-pinnatifid, basal pair of pinnae usually somewhat reduced; pinnae very narrowly ovate, attenuate, up to 160 x 50 mm; pinnules usually equally developed acroscopically and basiscopically; pinnule lobes narrowly oblong and very sharply serrate-dentate, glabrous on both surfaces; rhachis pale brown, glabrous, with narrow wings above and minutely pubescent at junction of pinnae. Sori oblong, curved to J-shaped, 1-1.5 mm long; indusia pale brown, erose to lacerate, membranous.