Japan Flora: Much-branched erect shrub about 1 m. high, the branches terete, the branchlets slender, often shallowly 2-grooved, usually curved-puberulent; leaves membranous, slightly acid in taste, oblong, elliptic, or broadly ovate, 3-8 cm. long, 15-3 cm. wide, acuminate to acute, acute to obtuse at base, serrulate, puberulent on the midrib on upper side and somewhat so on the midrib beneath, the petioles 1-1.5 mm. long; flowers 1-3，on the shoots of last year, nodding, pedicellate, greenish white to pinkish; calyxtube not angled, the teeth oval to obtuse-deltoid, commonly with few minute stipitate glands on margin; corolla campanulate, 6-7 mm. long; berries globose, 7-8 mm. in diameter, not angled, purple-black, the receptacle narrow. Apr.-May. Thickets and sunny places in mountains;

Hokkaido, Honshu (centr. and n. distr.); rather common. s. Kuriles and Sakhalin.

Var. glabrum Koidz. Leaves rather small, 2-4 cm. long, 1-2 cm. wide, usually less hairy. Thickets and pine woods in hills and low elevations in the mountains; Honshu, Shikoku.