Japan Flora: Rhi­zomes somewhat thickened, creeping, with a tuft of leaves at the apex; radical leaves ovate, 4-5 cm. long, 3-4 cm. wide, cordate, subacute to obtuse, obsoletely lobulate and irregularly toothed, hirsute on upper side, sparsely papillose-pilose beneath, the petioles 7-10 cm. long, purplish, hirsute, the stipules white- scarious, oblong; scapes terete, about 25 cm. long, whitish papillose-pilosulous, white-hairy at base; racemes about 7 cm. long, many-flowered, the bracts minute, the pedicels shorter than the calyx; calyx obconical, brown-purple, 3.5-4 mm. long, the lobes about 1.2 mm. long, deltoid, erect, the tip recurved, glandular externally; petals linear-subulate, 2.5-3 mm. long, entire or very rarely with a short lobe on one or both sides; styles very short, the stigma 4-lobed; seeds papillose. Apr. Wet places along ravines and streams in mountains. 

Rhizomes rather short, thickened; radical leaves tufted, broadly ovate, 4-8 cm. long, 3-5 cm. wide, obtuse to subacute, deeply cordate, shallowly and irregularly toothed, long-hirsute and minutely glandular-puberulent on both sides; scapes 30-50 cm. high, hirsute below; racemes 15-30 cm. long, many-flowered, short glandular-puberulent; calyx-lobes erect, ovate-deltoid; petals 3-parted, the segments narrowly linear, glandular-dotted; styles very short, thickened, the stigma shal­lowly 2- to 4-lobed; seeds not papillose.  Apr.-May. Wet places along streams and ravines in foothills.

Honshu (Kanto Distr. and westw.), Kyushu; rare