Great Yellow-cress - Rorippa amphibia

    Description

    Medium to tall plant with runners. Lower leaves toothed, sometimes pinnately lobed and short stalked, upper leaves lanceolate, unstalked. Flowers bright yellow, 5 to 6 mm, petals twice as long as sepals.

    Similar Species

    other Rorippa and yellow crucifers in wet places

    Identification difficulty
    ID guidance

    Upper leaves toothed but not lobed; seed-pods short, oval

    Recording advice

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

    Habitat

    Margins of rivers, canals and reservoirs and occasionally in marshes and pond margins.

    When to see it

    June to August.

    Life History

    Perennial.

    UK Status

    Widespread in southern Britain less frequent elsewhere.

    VC55 Status

    Fairly frequent in Leicestershire and Rutland. In the 1979 Flora survey of Leicestershire it was found in 106 of the 617 tetrads.

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

    Leicestershire & Rutland Map

    MAP KEY:

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

    UK Map