Japan Flora: Shrub with spreading callose hairs and short puberulence; branches terete; leaves ovate to narrowly so, or ovate-oblong, 4-10 cm. long, 2-5 cm. wide, more or less unequal, sometimes slightly oblique, acute to rather acuminate, slightly cordate at base, callose denticulate, 5- to 7-nerved, green on upper side, whitish beneath, the petioles 1-7 cm. long; inflorescence 8-12 cm. long, ascending, rather many-flowered, puberulous, the pedicels 5-12 mm. long, with 2 minute bracteoles at base; flowers rose with a purple hue, about 1.5 cm. across; calyx-tube about 4 mm. long, narrowed to the pedicel, the lobes small, deltoid-lanceolate, about 1 mm. long, obtuse, spreading; petals obovate- rhombic, about 8 mm. long, mucronate; anthers 8, the larger ones 4-5 mm. long, rose, the smaller ones about 2.5 mm. long; capsules obconical, about 7 mm. long, the crown nearly entire. July-Oct.

Kyushu (Kagoshima and Yakushima). Ryukyus.