Description: Rather local species of wet places, river banks and lakesides; mostly found around Lough Erne, Lough Neagh and the Upper and Lower River Bann, and the Quoile Basin. Scattered in a few other localities as well.

It is a perennial species about 6 - 18 ins (15 - 45 cm) tall with creeping stems, pinnate leaves and with very toothed leaflets. Flowers are rather small and yellow.

All names: Rorippa sylvestris (L.) Besser; Nasturtium sylvestre (L.) R.Br.; Radicula sylvestris (L.) Druce

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

iNaturalist: Rorippa sylvestris at iNaturalist World Species Observations database.