Shrubs or small trees, 3–7 m tall. Branchlets grayish brown to blackish brown, terete, glabrous, with sparse, large lenticels; buds oblong-ovoid, apex acuminate; scales several, dark reddish brown, glabrous or apically rusty brown pilose. Leaves imparipinnate, together with rachis 11–17 cm; petiole 1.3–3 cm; stipules caducous, lanceolate, 6–11 mm, membranous; rachis adaxially shallowly sulcate, distinctly narrowly winged, rust-brown pubescent, usually intermixed with white hairs; leaflet blades 7–9-paired, terminal and basal ones smaller, at intervals of 6–12 mm, dark green adaxially, oblong or ovate-oblong, 2.5–3.5 × 1.2–1.5 cm, both surfaces subglabrous, or abaxially reddish brown pubescent, later only along veins, adaxially white pubescent, glabrescent, base obliquely rounded, with few sharp teeth apically, apex usually obtuse, rarely acute. Compound corymbs 6–11 cm, many flowered; rachis and pedicels rusty brown pubescent; bracts lanceolate, 6–9 mm, membranous. Pedicel 2–4 mm. Flowers 6–8 mm in diam. Hypanthium campanulate, abaxially glabrous. Sepals triangular, 1.5–2 mm, apex obtuse or acute. Petals ovoid, 3–4 × 2.5–3.5 mm, glabrous, apex obtuse. Stamens ca. 1/3 as long as petals. Styles 5, pilose basally. Fruit red or reddish brown, ovoid-globose, 5–8 mm in diam.; sepals persistent. Fl. May–Jun, fr. Sep–Oct. 2n = 68*.

This taxon is probably an aggregate of apomictic microspecies.

Mixed forests, thickets, hot dry mountain valleys, stream sides; 2500--3800 m. SE Xizang, NW Yunnan.