Japan Flora: Branches stout, elongate and subscandent above, with slender, spaading or slightly recurved scattered prickles, short-pnberulent and with long spreading hairs; leaves coriaceous, broadly ovate to ovate-orbicular, 7-25 cm. long, 6-20 cm. wide, cordate at base, shallowly and obtusely lobulate and mucronate-toothed, with deciduous woolly hairs on upper side, with yellowish tomentum beneath, sparsely prickly on both sides, the petioles 2-7 cm. long, loosely prickly and densely puberulent; inflorescence axillary, densely few-flowered, the pedicels very short, the bracts large; calyx yellowish tomentose, the lobes broadly ovate to elliptic, sometimes obtusely toothed; petals about 15 mm. long and as wide; fruit red. Mar.-June. Thickets and cut-over areas in low mountains and hills.
Honshu (Izu Isis, and Kinki Distr.), Shikoku, Kyushu. s. China and Rynkyus.