Japan Flora: More fleshy and red-brown tinged, very thinly hairy or glabrous; stems naked at base; sterile blade 5-angled in outline, 8-15 cm. long, 10-20 cm. wide，3 or 4 times ternate, the pinnae and pinnules petiolulate, acute to acuminate, obtuse at the tip, the ultimate segments deltoid- lanceolate, pinnately lobed to parted, mucronate-toothed, the lowest basal lobes decurrent beyond the base of the segment but not inserted on the main rachis, the petioles 7-12 cm. long, arising 2-5 cm. above the base of the stem; fertile panicle 3-15 cm. long, narrowly pyramidal, twice as long as the sterile blade. Oct-Nov.

Honshu (Kanto Distr.); rare.