Japan Flora: Rhizomes very short, ascending, rather densely scaly, the scales membranous, lanceo­late to oblong-lanceolate, about 2 mm. long, short-acuminate, entire; fronds tufted, erect, thinly clothed with reddish brown spreading hairs about 0.5니).7 mm. long; blades linear-oblanceo­late to broadly linear, 2-8 cm. long, 2-4 mm. wide, obtuse to rounded, entire or obsoletely undulate on margin, gradually attenuate at base, long-decurrent on the very short, indistinct stipe, loosely involute on margin when dry, with a row of hydathodes on each side on upper surface; costa and veins obscure, the veins obliquely spreading, simple or once forked, the anterior branch (veinlet) slightly longer than to as long as the posterior; sori round or elliptic, dorsal or subterminal on the anterior veinlet, forming a row on each side along the costa.        Mossy tree trunks in mountains; Honshu (Izu Isis.),

Kyushu (Satsuma Prov.); rare. Ryukyus, China, and Indo­china.