Japan Flora: Rhizomes short and thick; fronds tufted; stipes straw- colored, 20-30 cm. long, scaly, more densely so near the base; scales lanceolate, 8-12 mm. long, often crispate, nearly black to somewhat fuscous, entire, lustrous; blades herbaceous, ob­long-ovate, 30-50 cm. long, 15-30 cm. wide, abruptly acumi­nate, contracted at base, thinly scaly beneath while young, glabrescent; pinnae 12-15 pairs, lanceolate, 2-4 cm. wide, long- acuminate, equilateral, sessile, the lower 1 or 2 pairs shorter; pinnules rather numerous, broadly lanceolate to narrowly ovate, 4-8 mm. wide, acute, often slightly adnate to the rachis, sessile, nearly equilateral, toothed and lobulate to parted; sori 6-16 to a pinnule, subcostal; indusia thin, oblong, straight or athyrioid, about 0.7 mm. long, erose, sparsely long-ciliate. Mountains

Honshu (n. and centr. distr.); locally common.