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Annual or perennial herbs, often scabrid and turning black on drying. Leaves alternate or opposite, simple. Inflorescence spicate or with flowers in ± spherical clusters or flowers solitary and axillary. Calyx tubular, 10-ribbed, 4-5-lobed. Corolla with cylindric tube and 5 ± equal lobes. Stamens 4; anthers strictly 1-thecous. Fruit a capsule, without a beak. Worldwide: c. 100 species in the tropics and subtropics Botswana: 4 taxa. |
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| Species | FZ divisions | Content |
| henriquesii Engl. | ||
| hispida Buch.-Ham. ex D. Don | Description, Image | |
| longispicata Schinz | Description, Image | |
| randii S. Moore |
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