Shrubs or small trees. Branchlets brownish gray, terete, glabrous when old, with few lenticels; buds ovoid, apex acute or shortly acuminate; scales several, dark red, brown pubescent. Leaves imparipinnate, together with rachis 6–9 cm; petiole 1–1.5 cm; stipules caducous, lanceolate, margin entire, membranous; rachis abaxially sparsely brown pubescent, adaxially sulcate, sometimes with few dark red glands, slightly winged; leaflet blades 11–14-paired, at intervals of 4–8 mm, blade dark green adaxially, linear-oblong to oblong-lanceolate, 1–2.5 × 0.4–0.8 cm, abaxially slightly brown pubescent or subglabrous, adaxially glabrous, base ± obliquely rounded, margin entire or apically shallowly few toothed, apex acute or ± obtuse. Compound corymbs terminal, 2–5 cm in diam., densely flowered; rachis and pedicels brown pubescent; bracts caducous, reddish brown, linear, membranous. Pedicel 1–2 mm. Flowers 5–7 mm in diam. Hypanthium campanulate, abaxially brown pubescent. Sepals triangular, slightly rust-brown pubescent or subglabrous, apex acute or obtuse. Petals white, ovate, 3–4 × 2–3 mm, adaxially glabrous or puberulous, apex obtuse. Stamens ca. 20, nearly 1/2 as long as petals. Styles 4, ca. as long as stamens, glabrous. Fruit not seen.
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