四川臭樱 si chuan chou ying

Shrubs 3–6 m tall. Branches purplish brown, glabrous, lustrous; branchlets of first year’s growth yellowish brown, brown pubescent, glabrescent. Winter buds purplish brown, ovoid; scales to 2 × 1 cm, outside brown pubescent but glabrescent, margin basally glandular serrate. Stipules linear to lanceolate, 1–1.3 cm, herbaceous, margin basally glandular serrate and apically entire, apex acuminate. Petiole 2–7 mm, densely brown villous; leaf blade oblong to elliptic, 5–11 × 2.5–5 cm, abaxially yellowish green and densely brown pubescent on midvein and secondary veins, adaxially dull green and glabrous, base subrotund to broadly cuneate, margin biserrate or sometimes incised serrate, apex acute, acuminate, or shortly caudate; secondary veins 12–20 on either side of midvein. Racemes 3–5 cm; peduncle densely brown pubescent; bracts lanceolate to ovate-lanceolate, membranous, margin entire or indistinctly shallowly serrate. Bisexual flowers 2–4 mm in diam. Pedicel ca. 2 mm, to 3 mm in fruit, densely brown pubescent. Hypanthium outside pubescent. Perianth segments ovate, soon caducous, outside and inside pubescent, margin entire, apex acute. Stamens many. Ovary glabrous. Style slender, longer than stamens; stigma oblique. Drupe purple, ovoid, ca. 8 mm in diam., glabrous. Fl. Apr–May, fr. Jun. 2n = 32*.

Shady valleys, scrub; 2100--3200 m. Qinghai, W Sichuan, Yunnan.