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CCDB → Angiosperms → Urticaceae → Gesnouinia
| Taxon name | Status | Median (n) |
| Gesnouinia arborea (L.) Gaudich. | Accepted | 10 |
| Parietaria arborea (L.) L'Hér. | Synonym of Gesnouinia arborea (L.) Gaudich. | 10 |
| Parietaria arborea (L.) L'Hér. | Synonym of Gesnouinia arborea (L.) Gaudich. | 10 |
| Gesnouinia filamentosa Webb & Berth. | Synonym of Gesnouinia filamentosa Wedd. | 13 |
| Parietaria filamentosa Webb & Berthel. | Synonym of Gesnouinia filamentosa Wedd. | 13 |