For descriptions see World Flora Online Worldwide: 466 species in Europe, Asia and Africa as far South as DR Congo and Tanzania. Introduced in the New World. South Africa and Australia. Burundi: 2 taxa. |
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| Species | Content | |
| brevipedicellatum (Engl.) Hub.-Mor. | Image | |
| scrophulariifolium (Hochst. ex A.Rich.) Hub.-Mor. |