Flora of Northern Ireland
Rorippa nasturtium-aquaticum agg.
© Paul Hackney
Rorippa nasturtium-aquaticum agg.
© Ian Dodkins
Rorippa nasturtium-aquaticum agg.
© Graham Day
Rorippa nasturtium-aquaticum agg.
(Map updated: March 2008)
 

Watercress is actually a complex of two similar species and their sterile hybrid. For most purposes they can be treated as a single species complex. It grows in drainage ditches and shallow streams and is quite common. Well known as a salad plant, although for hygenic reasons (and conservation!) it is advisable to eat only cultivated plants.

All names: Rorippa nasturtium-aquaticum agg.