Shrub or small tree to 7 m tall; branchlets thick, knotty, lenticellate, usually glabrous. Leaves alternate, 7-11(-13) foliolate, rachis puberulent, 5-10 cm long, terete; leaflets subopposite, ovate to elliptic, obtuse, or rarely emarginate, cu-neate to obtuse, 3-7 cm long, 1.5-3.0 cm wide, the upper surface glabrate, the lower surface dull white, puberulent, reticulate; petiolules ca. 2 mm long, puber-ulent. Inflorescences racemose, densely flowered, 6-17 cm long; bracts deltoid, commonly 1 mm long. Flowers pedicellate, the pedicels 1-2 mm long, villous; calyx campanulate, 2-3 mm long, tomentulose; petal yellow, 5-6 mm long, 2-4 mm wide, cucullate, the claw ca. 3 mm long, the blade suborbicular, irregularly sinuate; stamens 10, unequal; ovary stipitate, compressed, villous at the base, 2 ovulate. Fruit glabrous, 2.0-3.5 cm long, 1.0-1.5 cm broad, the wing 1-2 mm wide along the upper margin, the stipe 0.5-1.3 cm long; seed 5-7 mm long, 3.0-3.5 mm broad, ca. 2 mm thick, the hilum ca. 1 mm in diameter. Chromosomes: n = 20.
Home