Description from Flora of China
Rhizome erect, with stolons. Fronds caespitose. Stipes dark brown below, stramineous above, 20-30 cm, sparsely scaly; scales light brown, lanceolate. Lamina pentagonal, 20-23 × 20-22 cm, deeply cordate, tripinnate. Pinnae 5-7 pairs; lowest pinnae largest, deltoid, up to 10 × 8 cm. Pinnules 5-7 pairs; basiscopic pinnules larger than those on acroscopic side; lowest basiscopic pinnule on lowest pinna largest, 6-7 × 2-3 cm, pinnatisect, directed downward. Ultimate pinnules 5-7 pairs, deltoid-ovate, pinnatifid or pinnatipartite. Segments or serrate with long aristate teeth. Lamina papery, green; rachis and pinna rachis sparsely covered with light brown, lanceolate scales; costa covered with light brown, bullate scales abaxially. Sori on either side of costa; indusia brown, reniform, entire. n = 41.
Temperate deciduous and needle-leaved forests. Heilongjiang, Jilin, Liaoning Nei Mongol [Japan, Korea, Russia].