Description from Flora of China
Rhamnus blinii (H. Léveillé) Rehder var. sargentiana (C. K. Schneider) Rehder.
Shrubs deciduous, dioecious, to 6 m tall, unarmed. Branches alternate; young branches puberulent; older branches glabrous. Stipules subulate; petiole 5-10 mm; leaf blade lanceolate-elliptic, 6-12 × 2-4.5 cm, papery, abaxially sparsely pubescent on veins and slightly barbate vein axils, adaxially glabrous, lateral veins 12-15(-18) pairs, prominent abaxially, slightly impressed adaxially, base cuneate, often slightly asymmetric, margin finely serrate, slightly revolute, apex acute. Flowers 4-merous, few-clustered in leaf axils. Pedicels to 5 mm, slender. Calyx tube shallowly cup-shaped; lobes triangular, 1-1.5 mm, puberulent. Petals absent. Stamens shorter than sepals. Ovary 3- or 4-loculed. Drupe dark brown, blackish at maturity, globose, ca. 4 mm in diam., with 3 or 4 stones, with persistent calyx tube at base; fruiting pedicel 4-6 mm. Seeds not seen. Fl. Jul-Aug, fr. May-Jun of following year.
● Woods on mountain slopes; 1700-3800 m. Gansu, Hubei, Sichuan, Xizang, Yunnan.