托叶樱桃 tuo ye ying tao

Prunus stipulacea Maximowicz, Bull. Acad. Imp. Sci. Saint-Pétersbourg 29: 97. 1884.

Shrubs or trees, 1–7 m tall. Branchlets gray to grayish brown; young branchlets glabrous. Winter buds long ovoid, glabrous, apex acuminate. Stipules on vegetative branch leaflike, ovate, 5–10 × 4–8 mm; stipules on reproductive branchlets green, ovate-lanceolate, 4–6 × 2–3 mm, margin acutely serrate. Petiole 1–1.3 cm, glabrous; leaf blade ovate, ovate-elliptic, or obovate-elliptic, 3–6.5 × 2–4 cm, abaxially pale green and glabrous or with tufted hairs in vein axils, adaxially dark green and sparsely pubescent, base rounded, margin acutely incised biserrate, apex acuminate to abruptly caudate; secondary veins 6–10 on either side of midvein. Inflorescences umbellate, usually 2(or 3)-flowered; involucral bracts brown, elliptic, 5–7 × 3–4 mm, abaxially glabrous, adaxially appressed villous, margin glandular; peduncle absent or very short; bracts brown to greenish brown, elliptic, 5–6 × 3–4 mm, caducous after anthesis, margin glandular serrate. Flowers 1.2–1.3 cm in diam., opening slightly before leaves or nearly so. Pedicel 0.7–1.3 cm, 1–1.5 cm and apically thickened in fruit, glabrous. Hypanthium tubular-campanulate, 4–5 × 3–4 mm, outside glabrous. Sepals triangular, 3–4 mm, margin entire, apex acute. Petals pale red or white, broadly obovate, apex obtuse to acute. Stamens 35–40, slightly shorter than petals. Style exserted, much longer than stamens, basally pilose. Drupe red, ellipsoid, 1–1.2 × 0.8–1 cm; endocarp ± sculptured. Fl. May–Jun, fr. Jul–Aug.

Forests in ravines, thickets on mountain slopes, mountain slopes; 1800--3900 m. Gansu, Qinghai, Shaanxi, Sichuan.