Japan Flora: Evergreen; rhizomes creep­ing, 4-6 mm. across, glaucous, densely scaly, the scales subulate- lanceolate, about 3 mm. long, long-acuminate, nearly entire, ferrugineous at base; stipes slender, 4-6 cm. long, glabrous, lustrous; blades thinly chartaceous, broadly ovate-deltoid, 5-10 cm. long, nearly as wide, pinnatiparted, glabrous; segments 3-4 pairs, linear-lanceolate, 8-12 mm. wide, obtuse, the lowest horizontally spreading and short-decurrent, nearly entire, with remote minute incisions on the lateral veins; sori round, about 2 mm. across, in a row on each side of the costa.           

Shikoku, Kyushu (Yakushima); rare.