Shrubs deciduous, to 5 m tall, usually thorny; thorns robust, 5–10 cm. Branchlets reddish brown when young, grayish brown when old, terete, initially sparsely pubescent, glabrous when old, with sparse lenticels; buds not seen. Stipules caducous, falcate, herbaceous, subglabrous, glandular serrate at margin, apex acute to acuminate; petiole 1.5–4 cm, glabrous; leaf blade obovate or narrowly elliptic 4–8 × 2–4 cm, abaxially sparsely pubescent, densely so along veins, adaxially sparsely white pilose only along midvein, base cuneate, margin irregularly serrate, usually 3–5-lobed, sometimes not divided in apical part, apex acuminate. Compound corymb ca. 8 cm in diam., 7- or 8(–18)-flowered; peduncle white pubescent; bracts caducous, linear-lanceolate, membranous. Pedicel 1–1.5 cm, white pubescent. Flowers ca. 2 cm in diam. Hypanthium campanulate, abaxially white pubescent. Sepals triangular, 4–6 mm, adaxially white pubescent, petals white, suborbicular or obovate-orbicular, ca. 5 × 4 mm. Ovary 5-loculed, with 2 ovules per locule; styles 5, white pubescent basally. Pome red, globose, 1–1.5 cm in diam., glabrous; sepals persistent; pyrenes 5, smooth on both inner sides. Fl. May–Jun, fr. Sep–Nov.

Slopes; 500--800 m. C Shandong (Tai Shan).