Ronse Decraene, L.-P. & Akeroyd, J.R. (1988) Generic limits in Polygonum and related genera (Polygonaceae) on the basis of floral characters Botanical Journal of the Linnean Society 98 321-371
| Annual or perennial herbs, usually (in ours) erect. Ochreae present. Leaves large compared to Polygonum, usually more than 5 cm. Each inflorescence with usually more than 6 flowers, some or all inflorescences terminal, bracts similar to the leaves. Perianth segments mostly 5, petaloid, not enlarging in fruit. Stamens 8 (or 4-7 by reduction). Styles 2-3; nut biconvex or 3-angled. Worldwide: c. 150 species, ± cosmopolitan DRC: 5 taxa.Insects associated with this genus: 
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| Species | Botanical divisions | Content | 
| decipiens (R. Br.) K.L. Wilson | Description, Image | |
| nepalensis (Meisn.) H. Gross | Description, Image | |
| senegalensis (Meisn.) Soják | Description, Image | |
| setosula (A. Rich.) K.L. Wilson | ||
| strigosa (R. Br.) H. Gross | Description, Image |