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Herbs or shrubs. Inflorescence terminal or axillary, thyrses, cymes or solitary. Calyx actinomorphic, 5-lobed. Corolla ± actinomorphic or 2-lipped; campanulate above; rugula on upper lip indistinct; lobes 5. Fertile stamens 4, didynamous; anthers 2-thecous. Ovary with 2 ovules. Seeds without hygroscopic hairs. Worldwide: c. 70 species in the Old World tropics Malawi: 3 taxa. The larvae of the following species of insect eat species of this genus:
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Species | FZ divisions | Content |
gangetica (L.) T. Anderson subsp. micrantha (Nees) Ensermu | N,C,S | Description, Image |
glandulosa Lindau | N,C,S | Description, Image |
malawiana Brummitt & Chisumpa | C,S |
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