Rorippa nasturtium-aquaticum

Tracheophyta MagnoliopsidaCruciferaeRorippaRorippa nasturtium-aquaticum


A perennial herb, found both in and beside clear shallow streams and in ditches, ponds, canals and marshes. Although it grows in similar habitats to R. microphylla, it tends to be restricted to calcareous substrates. It is also cultivated, but not as often as R. x sterilis. Lowland.



World Distribution

Eurosiberian Southern-temperate element, but widely naturalised so that distribution is now Circumpolar Southern-temperate.

Broad Habitats

Light (Ellenberg): 7

Moisture (Ellenberg): 10

Reaction (Ellenberg): 7

Nitrogen (Ellenberg): 7

Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.9

July Mean Temperature (Celsius): 15

Annual Precipitation (mm): 988

Height (cm): 30

Length: 60

Perennation - primary


Life Form - primary

Perennial hydrophyte (perennial water plant)

Life Form - secondary


Comment on Life Form

does not die back to basal buds but retains loose structure



Clonality - primary

Extensively creeping and rooting at nodes

Count of 10km squares in Great Britain: 1678

Count of 10km squares in Ireland: 581

Count of 10km squares in the Channel Isles: 4

JNCC Designations