21. Cerasus dolichadenia (Cardot) S. Y. Jiang & C. L. Li
长腺樱桃 chang xian ying tao
Basionym: Prunus dolichadenia Cardot, Notul. Syst. (Paris) 4(1): 29. 1930; Cerasus claviculata T. T. Yü & C. L. Li.
Small trees or arborescent shrubs, 5–13 m tall. Branchlets grayish brown, pilose and pubescent when young. Winter buds ovoid, glabrous. Stipules ca. 6 mm, margin strongly fimbriate, fimbria tipped with a clavate gland. Petiole 0.8–2 cm, pilose, apex sometimes with 2 stalked or sessile nectaries; leaf blade broadly elliptic to obovate-oblong, 4–9 × 3–5 cm, abaxially green and pilose or more sparsely hairy between veins, adaxially dark green and sparsely pubescent, base broadly cuneate, rounded, or subcordate, margin acutely biserrate and teeth aristate and with a claviculate apical gland, apex abruptly caudate; secondary veins 8–12 on either side of midvein. Inflorescences umbellate-racemose, 4–9 cm, 4-or 5-flowered; involucral bracts brown, obovate-oblong, 10–12 × ca. 5 mm, abaxially glabrous, adaxially sparsely villous, margin with distant clavate glands; rachis pilose; bracts green, mostly fertile but basal 1 or 2 sterile, orbicular to ovate, 7–12 × 5–10 mm, persistent and slightly enlarged in fruit, abaxially subglabrous, adaxially sparsely pubescent, margin with distant clavate glands. Flowers opening at same time as leaves. Pedicel 1–2.5 cm, pilose. Hypanthium tubular-campanulate, ca. 7 × 6 mm, outside basally pilose to subglabrous, base slightly swollen. Sepals broadly triangular, 1.5–2 mm, margin entire and sparsely ciliate, apex acute. Petals white or pink, broadly elliptic, 7–8 mm in diam., slightly longer than wide. Stamens 36. Style nearly as long as stamens; stigma dilated. Drupe ellipsoid-ovoid, ca. 8 × 6 mm; endocarp sculptured. Fl. Jul, fr. Aug.
Dense forests on mountain slopes, shady ravines; 1400--2300 m. Gansu, Shaanxi, Shanxi, Sichuan.