Trees, small, 3-8 m tall. Branchlets brown, terete, glabrous. Leaf petiole 2-5 cm; petiolar gland plate-form, at insertion of pinna and first leaflet pair; pinnae 1 pair; leaflets 1-3 pairs, opposite or subopposite, ovate, elliptic, or lanceolate, 6-14 × 3-6 cm, papery, both surfaces glabrous, lateral veins 4-6 pairs, abaxially conspicuous, base cuneate or acute, apex acuminate or acute. Heads 10-15-flowered, 8-10 mm in diam., arranged in axillary or terminal loose panicles. Calyx urceolate or cup-shaped, 2.3-3 mm; teeth irregular. Corolla tubular or narrowly funnel-shaped, 6-8 mm, glabrous; lobes narrowly deltoid or oblong, 2-3 mm, apex puberulent. Staminal tube ca. as long as corolla tube or shorter. Ovary glabrous; stipe ca. 1.5 mm. Legume cylindric, ca. 10 × 2-2.5 cm, straight; valves brown. Seeds 6 or 7, shortly cylindric at middle, 5-7 mm high, 1.3-2 cm in diam., both ends turbinate; testa black, crustaceous. Fl. May, fr. Aug.
Home