Description from Flora of China
Plants 25-30 cm tall. Rhizome erect, short, ca. 6 mm in diam., apex with dark brown scales. Fronds clustered, monomorphic; stipe 12-14 cm × 1.5-2 mm; lamina 3-pinnulate; lateral pinnae/pinnules 1 pair, opposite, decumbent, lanceolate, somewhat falcate, stalked (ca. 2 mm), ca. 12 × 1.5 cm, basally asymmetrical, margins mostly entire, upper 1/3 of sterile pinnules serrate, apex long acuminate; terminal pinna similar in shape but longer, long stalked (1.5-3.5 cm), base symmetrically cuneate; lamina brown-green, thinly papery when dried, both surfaces glabrous; costae straw-colored, glabrous, grooved adaxially; veins inconspicuous, oblique, parallel, ca. 1.5 mm apart, simple or forked.
● Under scrub by valleys; 1100-1300 m. SE Yunnan (Daweishan, Pingbian).