闹鱼崖豆 nao yu ya dou

Trees, 10-15 m tall. Branchlets flexuous, with longitudinal ridges, glabrous. Buds rounded; scales 6-8, broadly ovate. Leaves 5-9-foliolate; rachis 12-17 cm, including petiole 2-3 cm; leaflet blades subalternate, obliquely ovate, 5-8 × 1.5-2.5 cm, papery, base cuneate and asymmetric, apex acuminate. Pseudoracemes axillary, main axis often repeatedly branched, with white crisped trichomes. Pedicel 1-1.5 cm, slender. Flow­ers ca. 1.5 cm. Calyx 5-6 mm; teeth triangular. Corolla white; standard broadly ovate, without basal calluses. Stamen mona­delphous. Ovary stipitate, glabrous, with 2 ovules. Legume fal­cate-oblanceolate, 11-14 × 2-3 cm, flat, thinly woody, smooth, apex shortly beaked; stipe ca. 1 cm. Seeds 1 or 2 per legume, pale brown, ellipsoid, ca. 1.3 × 1 cm, flat, shiny; hilum white. Fl. Feb-Apr, fr. year-round.

Sandy riverbanks; 100-800 m. SE Yunnan [Vietnam].

The pale, nearly white wood is used for construction. The seeds are used as a fish poison. The stems or roots are soaked in water and applied to relieve itching.