| English | Latin |
| thread-leaved water-crowfoot var. diffusus | Batrachium aquatile L. Dumort. |
| thread-leaved water-crowfoot var. diffusus | Batrachium trichophyllum Chaix Bosch |
| thread-leaved water-crowfoot var. diffusus | Ranunculus paucistamineus Tausch var. drouetii F. W. Schultz ex Gren. Gelert |
| thread-leaved water-crowfoot var. diffusus | Ranunculus trichophyllus Chaix (var. diffusus) |
| thread-leaved water-crowfoot var. diffusus | Ranunculus paucistamineus Tausch |
| thread-leaved water-crowfoot var. diffusus | Ranunculus paucistamineus auct. (var. aquatilis) |
| thread-leaved water-crowfoot var. diffusus | Ranunculus aquatilis L. |