Calpurnia E.Mey.

Shrubs or small trees. Leaves imparipinnate, 6–30-foliolate; stipules small; stipels absent; lateral leaflets mostly strictly opposite but on some leaves in C. aurea varying to subopposite or nearly alternate, up to 4(–5) cm. long. Flowers in axillary, or rarely terminal, few–many-flowered racemes; bracts small; bracteoles minute or lacking; pedicels sometimes swollen or jointed at or near the top. Hypanthium conical, with the ovary inserted basally. Calyx ± campanulate, with the 2 upper teeth largely fused. Petals yellow; standard with a strongly channelled claw and ± reflexed limb; wings falcate-oblong; keel-petals obtuse, lightly coherent on lower side. Stamens free or more commonly shortly joined at the base; anthers dorsifixed. Ovary stipitate, with several to numerous ovules; style curved upwards, glabrous above, tapered to a small terminal stigma. Fruits stipitate, narrowly oblong, flat, ± membranous, sometimes with a narrow wing along the upper edge and with the remains of the style often persistent, usually indehiscent. Seeds compressed, ovate-oblong, with the small hilum near the narrow end; radicle incurved.