Description: 'Amphibious' refers to the ability of this native species of bistort to grow in either aquatic or terrestrial habitats, often both at the same site such as in lakes and on their dry shores. In water, the leaves float on the surface. The flowers are small and pink in small spikes. It is common and widespread across Northern Ireland around lakes, rivers and canals, especially in the south and east.

An alternative name is Polygonum amphibium.

All names: Persicaria amphibia (L.) Gray; Polygonum amphibia L.; Polygonum amphibium L.

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

iNaturalist: Persicaria amphibia at iNaturalist World Species Observations database.