Unarmed or spiny, annual, rarely perennial, monoecious herbs. Leaves alternate, long-petiolate, simple and entire or sinuate. Flowers unisexual. Bracts and 2 bracteoles present. Perianth segments (2-)3-5, free or connate at base, membranous. Fruit a capsule, indehiscent, rupturing irregularly or with a circumscissile lid. Seeds usually black and shining. Worldwide: 60 species, in both tropical and temperate zones Burundi: 7 taxa. The larvae of the following species of insect eat species of this genus: |
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