Japan Flora: Small glabrous fern; rhizomes very slender, long-creeping, 0.5-1 mm. across when dried, the aales numerous, dense, membranous, linear-lanceolate, long-acuminate, dark brown, entire, clathrate, about 15 mm. long; fronds remote, 수-10(-12) cm. long; blades spathulate to linear-spathulate, 5-10(-15) mm. wide, somewhat fleshy, very obtuse to subacute, broadest below the apex, entire or nearly so, the stipe very short and indistinct; veins hidden; sori 1-6 on each side of the broadest part of the blade, near the costa, oblong to linear-oblong, 1.5-2 mm. wide, very oblique. Mossy rocks in mountains.

Hon­shu, Shikoku, Kyushu. Formosa and China.