Trees or shrubs. Stems usually 4-angled. Leaves opposite or in whorls of 3, (1-)3-7-foliolate. Cymes mostly dichasial, short and dense to open and spreading, bracts often well developed. Corolla white and/or coloured, mostly shades of blue, lilac or mauve, ± zygomorphic; limb spreading ± 2-lipped. Stamens 4, didynamous. Drupes fleshy; fruiting calyx usually accrescent, plate-like or cup-shaped. Worldwide: 250 species occurring in tropical and temperate regions DRC: 4 taxa. |
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| Species | Botanical divisions | Content |
| doniana Sweet | Description, Image | |
| fischeri Gürke | Image | |
| madiensis Oliv. subsp. milanjiensis (Britten) F. White | Description, Image | |
| mombassae Vatke | Description, Image |