Description from Flora of China
Trees to 15 m tall. Branches purple to brownish gray, with pale lenticels; branchlets reddish brown. Winter buds ovoid, glabrous or with ciliate scale margins. Stipules linear, margin glandular serrate, apex acuminate. Petiole 1–1.5 cm, apically with 2 nectaries; leaf blade elliptic, oblong, or oblong-obovate, 4–10 × 2–4.5 cm, abaxially pale green, adaxially dark green, base rounded to broadly cuneate, margin irregularly and acutely serrate or sometimes biserrate, apex caudate. Racemes 7–10 cm, 7-or 8-flowered, basally with 1 or 2 leaves. Flowers 1–1.6 cm in diam. Pedicel 1–1.5(–2.4) cm. Hypanthium campanulate, outside glabrous. Sepals triangular-ovate, soon caducous, outside glabrous, margin glandular, apex acute to obtuse. Petals white, oblong, base shortly clawed. Stamens many. Ovary glabrous. Style 1/2 as long as stamens; stigma disc-shaped. Drupe reddish brown to black, ovoid-globose, 8–10 mm in diam., smooth. Fl. Apr–Jun, fr. May–Oct.
Forests, forest margins, thickets, slopes, valleys, stream sides; 800--2700 m. Gansu, Hebei, Heilongjiang, Henan, Jilin, Liaoning, Nei Mongol, Qinghai, Shaanxi, Shandong, Shanxi, Xinjiang [Japan, Korea, Mongolia, Russia].