Water-cress agg. - Nasturtium officinale agg.

Alternative names
Rorippa nasturtium-aquaticum agg.
Description

Water-cress (Nasturtium officinale) and Narrow-fruited Water-cress (Nasturtium microphyllum) can be very difficult to distinguish, especially when the pods are not present. A hybrid between the two species also exists. For this reason we have created a page for the two species as an aggregate. We suggest that anyone submitting records which have not been independently verified by an expert submits them as the aggregate.  See individual species pages for descriptions.

Identification difficulty
Habitat

River and canal banks, pond margins and wet ditches.

Life History

Perennial. 

UK Status

The two species are widespread in Britain with Nasturtium microphyllum becoming more frequent further north.

VC55 Status

Fairly frequent in Leicestershire and Rutland. In the 1979 Flora survey of Leicestershire Nasturtium officinale was found in 91 of the 617 tetrads, whilst Nasturtium microphyllum was found in 180 of the 617 tetrads.

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Leicestershire & Rutland Map

MAP KEY:

Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

UK Map