Description from Flora of China
Prunus patentipila Handel-Mazzetti, Symb. Sin. 7: 529. 1933.
Trees or shrubs, 5–13 m tall. Branchlets gray, densely villous and pubescent when young, glabrescent. Winter buds ovoid-ellipsoid, glabrous. Stipules lanceolate, margin with long-stalked glands. Petiole 0.8–2 cm, densely spreading villous, hairs thicker and yellowish brown with age, apex with 1–3 depressed to capitate nectaries; leaf blade obovate-oblong to ovate-elliptic, 4–12 × 3–5 cm, abaxially pale green, densely horizontally spreading villous along veins, sparsely pubescent between veins, and hairs yellowish brown with age, adaxially green and pilose when young but glabrescent, base broadly cuneate, rounded, or subcordate, margin mostly incised biserrate and teeth with a capitate to depressed apical gland, apex caudate to abruptly caudate; secondary veins 8–11 on either side of midvein. Inflorescences subcorymbose-racemose, 4–8 cm, 2–4-flowered; involucral bracts tinged brown, obovate-oblong, 7–8 × 4–5 mm, margin with stalked capitate glands; rachis densely villous, hairs thicker and yellowish brown with age; bracts mostly fertile but rarely 1 or 2 sterile basally on rachis, ovate to ovate-elliptic, 1–1.5(–1.8) × 0.5–1.2 cm, both surfaces pilose but glabrescent, margin with stalked disciform-capitate glands. Pedicel 1.5–2.5 cm, densely villous. Hypanthium subtubular, ca. 6 × 3–4 mm, outside pilose, base swollen. Sepals ovate-triangular, ca. 2 mm, markedly reflexed after anthesis. Stamens ca. 36. Ovary glabrous. Style exserted, sparsely pilose except at apex; stigma capitate. Drupe red, ovoid, ca. 10 × 8 mm; endocarp shallowly sculptured. Fl. Apr–May, fr. Jul.
Forests on mountain slopes; 2400--3000 m. NW Yunnan.