Shrubs or small trees. Leaves opposite or whorled; lamina long-acuminate, often with domatia; petiole flattened, channelled. Inflorescences axillary or terminal, reduced (in ours) to 1-3 flowers in each axil. Flowers bisexual, heterostylous. Calyx short, dentate or lobed. Corolla salver-shaped, white to cream, densely hairy in the upper half within. Ovary 2-3-locular; ovules numerous in each loculus. Fruit a spherical berry. Seeds numerous. Worldwide: c. 25 species in tropical Africa Burundi: 3 taxa. |
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| Species | Content | |
| dewevrei (De Wild. & T.Durand) Bremek. | ||
| paucinervis (Hiern) Bremek. | ||
| viridiflora (Schweinf. ex Hiern) Hepper | Image |