| netherlands | south holland province | ludwigia peploides | species | 1 | 0 |
| netherlands | utrecht province | ludwigia peploides | species | 1 | 0 |
| united states | california | ludwigia peploides subsp. montevidensis | subspecies | 16 | 0 |
| united states | california | ludwigia peploides subsp. peploides | subspecies | 16 | 0 |