Japan Flora: Glabrous branched shrub; leaves elliptic or oblong, 8-13 cm. long, 3-5 cm. wide, acute at both ends, coarsely undulate-toothed or subentire, the petioles 1-1.5 cm. long; inflorescence axillary, a simple or rarely a compound raceme, 1-5 cm. long; bracteoles lanceolate, acute; calyx-teeth ovate; corolla 2.5-3 mm. long, white or slightly purplish, the tube about as long as the spreading rounded lobes; fruit globose, 3.5- 4 mm. across, obsoletely striate, the upper 1/4-1/3 exserted beyond the calyx-lobes. Mar.-Apr. Woods and thickets in hills and low mountains.