Shrubs. Stems prickly, scrambling or trailing. Stipules free or adnate to base of petiole. Leaves 3-foliolate or imparipinnate with 2-3(-4) pairs of leaflets; upper leaves sometimes simple; leaflets serrate. Flowers in many-flowered racemose or paniculate inflorescences at the ends of the branches. Flowers bisexual, usually 5-merous, actinomorphic. Calyx segments 5. Petals 5, sometimes 0. Stamens numerous. Carpels many. Fruit a head of many 1-seeded drupelets. Worldwide: 250 species, cosmopolitan, but mainly northern temperate Rwanda: 7 taxa. Insects associated with this genus:
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| Species | Content | |
| adolfi-friederici Engl. | ||
| apetalus Poir. | ||
| kirungensis Engl. | ||
| pinnatus Willd. | ||
| rigidus Sm. | Description, Image | |
| runssorensis Engl. | ||
| steudneri Schweinf. |