Japan Flora: Deciduous, scandent shrub, the branches deep green, the young branchlets puberulent; leaves ovate-elliptic or ovate-oblong, 5-7 cm. long, 2-4 cm. wide, acute with an obtuse tip, acute to rounded at base, deep green on upper side, whitish and with finely reticu­late veinlets beneath, thinly spreading-pubescent on the midrib beneath, the petiole bases persistent, spinelike; flowers yellow, precocious, 5-merous, solitary in axils, peduncled, cup-shaped, nodding, 5-6 mm. across; peduncles slender, 1.5-25 cm. long in fruit; calyx minute; petals obovate, about 3.5 mm. long; stamens erect, slighdy shorter than the petals; ovary 1; style gradually thickened at base, about 3 mm. long; fruit with 1 or 2 carpels, blue, about 6 mm. across, slightly flattened, with raised reticulate veinlets when dry. Mar.

Shikoku, Kyu­shu. China.