Japan Flora: Shrub; branches more or less angled, glabrous or short-pubescent while young; leaves broadly lanceolate, sometimes oblong, 2.5-4 cm. long, 6-12 mm. wide, acute, sometimes subobtusc, cuneate at base, serrulate except on the lower margin, nearly concolorous, gla­brous or sparingly pubescent while young, penninerved, the petioles 1-2 mm. long; inflorescence 4- to 6-flowered, with few bracts at base; pedicels slender, 1-2 cm. long, glabrous; flowers white, single; calyx glabrous, the teeth deltoid, erect, short- pubescent within; fruiting carpels glabrous or sparingly pilose. Apr.-May.

Hokkaido, Honshu (n. distr.); rare.