Annual or perennial herbs or shrubs. Hairs basifixed. Leaves usually imparipinnate, rarely palmate or 1-foliolate; leaflets opposite or subopposite, often silky, entire, usually narrowed at base and widest above middle, often with a prominent marginal nerve. Flowers 2 or more together in leaf axils or at the nodes of pseudoracemes, which are sometimes condensed and appearing subcapitate or subumbellate. Calyx 5-lobed, the upper 2 lobes often ± united. Corolla usually reddish-purple; standard pubescent outside. Upper filament lightly attached to others, less often free; other filaments fused for 2/3 to 4/5 of their length. Ovary pubescent, sessile. Pod linear or oblong, ± flattened, beaked, usually dehiscent. Seeds may be longitudinal (long axis parallel to that of pod), transverse or oblique. Aril almost 0 to well-developed. Worldwide: 400 species in warm regions, mostly Africa and Australia Zambia: 57 taxa. Insects associated with this genus:
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| Species | FZ divisions | Content |
| acaciifolia Welw. ex Baker | C,E,S | Description, Image |
| aequilata Baker | N | Description, Image |
| aurantiaca Harms | N | |
| bracteolata Guill. & Perr. var. strigulosa Brummitt | N | |
| caerulea Baker f. subsp. caerulea | B,C,S | |
| cephalantha Welw. ex Baker var. decumbens Welw. ex Baker | B,N,W,C,S | |
| chisumpae Brummitt | B | |
| coronilloides Welw. ex Baker [LR-lc] | B | |
| curvata De Wild. | N,W | |
| dasyphylla Baker subsp. amplissima Brummitt | W | |
| dasyphylla Welw. ex Baker subsp. dasyphylla | N,W,C | Description, Image |
| decora Welw. ex Baker | N,W,C,E,S | |
| elata Deflers subsp. heckmanniana (Harms) Brummitt var. heckmanniana | N,W,C,E,S | Description, Image |
| elata Deflers subsp. heckmanniana (Harms) Brummitt var. abercornensis Brummitt | N | |
| euprepes Brummitt | B,E,S | |
| hockii De Wild. subsp. hirsutostylosa (De Wit) J.B.Gillett [NrEnd] | W | Description, Image |
| hockii De Wild. subsp. hockii [NrEnd] | N | Description |
| interrupta Engl. subsp. elongatiflora J.B. Gillett | E | Image |
| kasikiensis Baker f. | N,W | |
| kasikiensis Baker f subsp. chinsaliana Brummitt [VU] | Description | |
| kindu De Wild. | N,W | |
| laxiflora R.E. Fr. | B,N,W,C,S | |
| lepida Baker f. subsp. lepida | N,W,C,S | |
| lepida Baker f. subsp. nigrescens Brummitt | N | |
| linearis (Willd.) Pers. var. linearis | B,N,C,E,S | |
| linearis (Willd.) Pers. var. discolor (E. Mey.) Brummitt | N,S | |
| linearis (Willd.) Pers. [Agg] | B,N,C,E,S | Description, Image |
| longipes Meisn. var. longipes | C,S | |
| longipes × reptans | C | |
| lupinifolia DC. | B,N,W,C,S | Description, Image |
| lurida Sond. | Description, Image | |
| malvina Brummitt | N,W,C | |
| micrantha J.B. Gillett | N,W,C,S | |
| muenzneri Harms subsp. pedalis Brummitt [DD] | E | |
| nana Kotschy | N,W | |
| noctiflora Bojer ex Baker | S | Description, Image |
| paniculata Baker | B,N,W,C,E | |
| paradoxa Brummitt | N | |
| pumila (Lam.) Pers. | C,E | |
| punctata J.B.Gillett subsp. punctata | N | |
| punctata J.B.Gillett subsp. redheadii Brummitt | N,W | |
| purpurea (L.) Pers. subsp. leptostachya (DC.) Brummitt var. delagoensis (H.M.L. Forbes) Brummitt | B | Description |
| purpurea (L.) Pers. subsp. leptostachya (DC.) Brummitt | B,N,W,C,S | Description, Image |
| purpurea (L.) Pers. subsp. leptostachya (DC.) Brummitt var. pubescens Baker | B,N,W,C,S | Description |
| radicans Welw. ex Baker | B,N,W,C,S | Description, Image |
| reptans Baker var. arenicola Brummitt | N | |
| reptans Baker var. reptans | C,S | |
| rhodesica Baker f. var. rhodesica | B,N,W,C,E,S | Description, Image |
| rhodesica Baker f. var. polystachyoides (Baker f.) Brummitt | S | |
| richardsiae J.B.Gillett subsp. erucifera Brummitt [LR-lc] | N,C | |
| richardsiae J.B.Gillett subsp. richardsiae [NrEnd] | N | Description, Image |
| ringoetii Baker f. | N,W | |
| robinsoniana Brummitt [DD] | C | |
| stormsii De Wild. var. pilosa Brummitt | N,C | |
| stormsii De Wild. var. stormsii | N,W,C,E,S | Description, Image |
| vogelii Hook. f. | B,N,W,C,E,S | Description, Image |
| zambiana Brummitt [DD] | N |