Japan Flora: Rhizomes creeping; fronds dimorphic, evergreen, glabrous; stipes of the sterile fronds 2-10 cm. long, the fertile 5-12 cm. long, straw-colored, often somewhat reddish, sparsely scaly in upper part, densely so toward base, shallowly sulcate on upper side; scales membranous, broadly ovate, 2-7 mm. long, abruptly acuminate, spreading, entire, brown; sterile blades lanceolate, 12-30 cm. long, 2-4 (-5) cm. wide, acute, with a short tail 7-20 mm. long at the tip, narrowed at the base, simply pinnate, the rachis pale green to pale brownish; pinnae herbaceous-coriaceous, nearly horizontally spreading, broadly linear, 2.5-5 mm. wide, subacute, decurrent on the rachis, entire, pale green beneath, the lowest pinnae reduced, deltoid to ovate-deltoid, 2-5 mm. long, 4-6 mm. wide, more or less deflexed, obtuse, sterile, interrupted; fertile pinnae 8-15 mm. long, 2-5-3.5 mm. wide, subapiculate. Woods in low mountains.

Honshu, Shikoku, Kyushu.