Succulent perennials or (rarely) annuals, with bulbs, corms, rhizomes or tubers and often with separate fertile and sterile shoots. Inflorescences composed of cymes, each cyme subtended by a spathe, consisting of 2-ranked sessile or subsessile flowers and usually conspicuous herbaceous bracteoles. Flowers actinomorphic, bisexual. Calyx tubular below. Corolla with a short tube, 3 lobes blue, purple or pink. Stamens 6, equal, all fertile. Ovary 3-locular. Capsule narrowly ovoid. Worldwide: 50 species, in the Old World tropics Botswana: 3 taxa. Insects associated with this genus:
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| Species | FZ divisions | Content |
| foecunda Hassk. | ? | Description, Image |
| lanata Benth. | Description, Image | |
| speciosa (L.f.) Hassk. subsp. speciosa | Description, Image |