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

Life form information

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

Distribution information

JNCC Designations


PLANTATT - Attributes of British and Irish plants. (.zip 1455KB) This dataset was compiled and published in 2004, and last updated in November 2008. Download includes an Excel spreadsheet of the attributes, and a PDF explaining the background and nomenclature. Note that the PDF version is the booklet as published, whereas the Excel spreadsheet incorporates subsequent corrections. A hardcopy can be purchased from the Centre for Ecology and Hydrology.

Atlas text references

Atlas Supp (9a)
Grime JP, Hodgson JG, Hunt R
1988.  Comparative Plant Ecology.
Howard HW, Lyon AG
1952.  Biological Flora of the British Isles. No. 36. Nasturtium officinale R. Br. (pp. 228-238), Nasturtium microphyllum Boenningh. ex Rchb. (pp. 239-245). Journal of Ecology. 40:228-245.
Jalas & Suominen (1994)
Preston CD, Croft JM
1997.  Aquatic plants in Britain and Ireland.
Rich TCG
1991.  Crucifers of Great Britain and Ireland. Botanical Society of the British Isles Handbook no. 6.