Marsh Yellow-cress - Rorippa palustris

    Description

    Short to medium hairless plant, lower leaves pinnately lobed, often rather lyre shaped, the upper leaves unstalked, pinnately lobed to unlobed, with slight ears at the base. Flowers yellow, small 5 mm, sepals more than 1.6 mm long equal to petals, the fruit short, rarely much longer than its stalk.

    Similar Species

    other Rorippa and yellow crucifers in wet places

    Identification difficulty
    ID guidance

    Leaves pinnately lobed, fruits oblong.  Petals about as long as sepals

    Recording advice

    General photo of plant in habitat, and photo showing details of leaves, flowers/fruits 

    Habitat

    Bare ground subjected to winter flooding, temporary pools that dry out, margins of streams and lakes, damp pathways.

    When to see it

    June to August.

    Life History

    Annual or biennial.

    UK Status

    Fairly frequent throughout Britain.

    VC55 Status

    Fairly frequent in Leicestershire and Rutland. In the 1979 Flora survey of Leicestershire it was found in 112 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