Japan Flora: Subscandent evergreen shrub; branches gray-yellow, glabrous; leaves elliptic to oblong, 5-10(-15) cm. long, 3-5(-7) cm. wide, glabrous, coriaceous, penninerved, with rather prominent vcinlets beneatli, abruptly acute with an obtuse tip, acute at base, the petioles 1.5-2 cm. long; inflorescence paniculate, many-flowered, axillary, with short gray-yellow hairs, the pedicels nearly as long as the calyx; calyx globose, the segments about 3 mm. long, yellow-villous; corolla about 10 mm. long, 5-lobed, densely yellow-pubescent along the ribs on back.