Shrub, densely pubescent; leaves elliptic, ovate-oblong, or ovate, 6-12 cm. long, 2.5-6 cm. wide, acuminate, toothed, loosely pilose above, densely whitish spreadingpilose especially on nerves beneath, the petioles 3-5 mm. long; flowers 1-3 in upper leaf-axils, subsessile or sessile; ovary pilose; corolla reddish, 3-3.5 cm. long, short-pubescent outside; style exserted.
May-June. Honshu (centr. and w. distr.), Shikoku. Variable.
Var. nakaii (Makino) Hara.
Plants less densely pilose throughout; corolla white, becoming red with age. Honshu (centr. distr.). F
f. kariyosensis (Nakai) Hara. Flowers white. Intermediate between W. floribunda and W. sanguinea.