Japan Flora: Rhizomes short-creeping; fronds large, 1-2 m. long; stipes straw-colored, stout, lustrous, sparsely scaly in upper part, densely so in lower part, the scales brown, ovate to lanceolate, 8-15 mm. long, tardily deciduous and leaving a small scar on the stipe; blades thinly herbaceous, large, deltoid-ovate, acuminate, 4-pin- nate, the rachis and its divisions smooth, often somewhat chest- nut-brown, brown-pilose on nodes above; pinnae and pinnules sessile, spreading, acuminate, the lowest pinnae large, the posterior side broader than the anterior; ultimate pinnules narrowly ovate, 6-10 mm. long, obtuse, pinnately parted to lobed, with fleshy red-brown hairs on costas and costules, glabrous beneath; lobes and pinnules obtuse, entire, 1-veined, cuneate and decurrent at base; sori subterminal on the veins, dorsal, rounded; indusia small, suborbicular, erose, 0.2-0.3 mm. long.
Kyushu (Yakushima); rare. Formosa, China to India.