Narrow-fruited Water-cress - Nasturtium microphyllum

    Description

    The 4-petalled white flowers are larger than those of N. officinale and this species has longer (16 to 24 mm), upward curved, narrow seed pods on long stalks.

    Similar Species

    Nasturtium officinale and Apium nodiflorum (Fool's Watercress)

    Fool's watercress is an umbellifer.

    Identification difficulty
    ID guidance

    Leaves, pinnate, hairless.  Seeds mostly in 1 row under each valve

    Recording advice

    The County Recorder has asked for a specimen of this plant to be retained for verification

    Habitat

    River and canal banks, pond margins and wet ditches.

    When to see it

    May to October.

    Life History

    Perennial

    UK Status

    Widespread in Britain, and in the north it is more common the N. officinale.

    VC55 Status

    Fairly frequent in Leicestershire and Rutland where it is the more common of the two Water-cress species. In the 1979 Flora survey of Leicestershire it was found in 180 of the 617 tetrads.

    In the current Checklist (Jeeves, 2011) it is listed as Native, frequent

    Leicestershire & Rutland Map

    MAP KEY:

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

    UK Map