Japan Flora: Evergreen; rhizomes short, ascending, covered with the persistent stubs of old stipes; stolons wiry, with a few globose densely scaly tubers, the scales thinly membranous, pale brown, linear-lanceolate, 7-10 mm. long, about 1 mm. wide, filiform at the tip, sparsely ciliate; fronds glabrous, tufted; stipes short, 5-10 cm. long, 2-3 mm. wide, nearly terete, the scales prominent, rounded, long-ciliate; blades linearJance- olate to broadly linear, 25-50 cm. long, 3-6 cm. wide, narrowed at both ends, simply pinnate; pinnae many, spreading, narrowly oblong, 5-7 mm. wide, obtuse, appressed-toothed, sessile, rounded to subtruncate on posterior side at base, triangularly auriculate and subcordate on anterior side at base, the lower pinnae broader and shorter, oblong to elliptic, rounded at the tip; sori submarginal or nearly median between the costa and the margin; indusia obliquely reniform, attached at base, entire, about 1 mm. wide. Thin woods and roadsides in hills near the sea; Honshu (Izu, Kii, and Nagato Prov.), Shikoku, Kyushu; locally common.
Ryukyus, Formosa, China, and generally throughout the Tropics and subtropics of the Old World