Japan Flora: Rhizomes stout, ascending; stipes straw-colored, 20-30 cm. long, densely scaly toward the base; basal scales brown, membranous, lustrous, lanceolate to linear-lanceolate, 1-1.5 cm. long, long-acuminate, entire, those on the upper part of stipes and lower part of rachis very sparse, dark-brown, linear, 3-7 mm. long, sparsely spinulose- ciliate; fertile blades broadly ovate, 30-40 cm. long, 25-40 cm. wide, the rachis 20-25 cm. long; pinnae 5-7 pairs, linear- lanceolate, 2-3 cm. wide, gradually acuminate, the lower ones pinnately parted, the upper lobed, mucronate-toothed, the lobes oblique, ovate-deltoid to oblong, abruptly acute to obtuse, the basal pinnae often smaller and cut nearly to the base; veins subpinnate, single to a lobe, the veinlets elongate, simple; terminal pinna pinnadparted; sori scattered, sometimes more so toward margin; indusia orbicular-reniform, entire, about 1.5 mm. across.

Honshu (reported from Mount Kiyosumi in Awa Prov.), Kyushu (Hizen and Higo Prov.); rare. Formosa.