Annual or perennial herbs, subshrubs or shrubs. Stipules present, stipels 0. Leaves alternate or ± paripinnate,
2-many-foliolate. Leaflets subopposite to alternate, asymmetric at
base. Inflorescences axillary, less often terminal or leaf-opposed. Bracts
entire or 2-3-fid; bracteoles mostly deciduous. Calyx 2-lipped. Corolla usually yellow, orange-yellow or orange, often lined or flushed with purple. Pod linear or elliptic with 1-many articles, usually
straight or curved. Worldwide: 150 species in tropical and warm zones Caprivi: 5 taxa. |
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