Annual or perennial herbs or subshrubs. Stipules 0. Leaves alternate, opposite or fasciculate, often ± succulent. Inflorescences terminal or lateral, cymose, often umbel-like. Flowers bisexual, whitish or greenish. Per. segments generally unequal, 5 , free. Stamens (5-)7. Ovary superior, with two 1-ovulate loculi. Style 1. Stigmas 2. Fruit dehiscing into 2 mericarps. Mericarps indehiscent, 1-seeded with outer face reticulate, rugose, spine-tipped or ± smooth; base often auriculate; margin winged or not. Worldwide: 20 species, most in southern Africa, also tropical Africa, Arabia and Pakistan Zambia: 3 taxa. |
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| Species | FZ divisions | Content |
| fenestratum (Fenzl) Heimerl var. fenestratum | Description, Image | |
| viscosum (J. Gay) Fenzl subsp. viscosum var. viscosum | B | Description |
| viscosum (J. Gay) Fenzl subsp. viscosum var. kraussii Friedrich | B,S | Description, Image |