Shrubs, trees or woody climbers. Growth axes differentiated into 2 sorts: opposite leaves and in whorls of 3-4. Leaves with domatia. Inflorescences in heads, usually solitary, individual flowers well separated. Corolla salver- to funnel- shaped; lobes 4-5. Ovary 2-locular. Fruits fleshy, indehiscent, containing 2 1-seeded pyrenes. Worldwide: 6 species in the tropics and N America Zimbabwe: 1 taxon. |
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