Annual or perennial herbs. Leaves opposite, ovate to linear, entire, sessile. Flowers solitary or in axillary clusters, bisexual, zygomorphic. Bracts resembling leaves. Bracteoles 0. Calyx deeply 5-lobed, sometimes one lobe longer and broader than the others. Corolla 2-lipped, tube cylindric below, upper lip 2-lobed with lobes recurved, lower lip 3-lobed, lobes sometimes reflexed. Stamens 4, didynamous. Fruit a linear capsule. Worldwide: c. 25 species in the tropics Burundi: 4 taxa. Insects associated with this genus:
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Species | Content | |
pobeguinii Benoist | ||
schulli (Buch.-Ham.) M.R. Almeida & S.M. Almeida | Description, Image | |
spiciformis Lindau | Description, Image | |
uliginosa S.Moore |