Description: This is a very recent arrival from North America which has appeared in some ponds in Co Down, probably throw-outs from garden ponds or perhaps deliberately planted. It is like a very large and coarse version of the native Hydrocotyle vulgaris.

Distribution Map from NBN: Hydrocotyle ranunculoides at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Hydrocotyle ranunculoides at iNaturalist World Species Observations database.