Field Penny-cress - Thlaspi arvense


    Short to medium hairless, erect plant. Stem leaves oblong, clasping the stem closely, lower leaves stalked, not in a rosette. Flowers white 4 to 6 mm anthers yellow. Fruit quite large 10 to 15 mm rounded with a deep notch and broadly winged.

    Similar Species


    Identification difficulty
    ID guidance

    Rounded fruits with wings all round, notched, with short style not exceeding wing.

    Recording advice

    Photo of whole plant showing seeds


    A weed of waste ground, disturbed and arable land, allotments etc.

    When to see it

    May to August.

    Life History


    UK Status

    Fairly common throughout Britain.

    VC55 Status

    Fairly frequent in Leicestershire and Rutland but possibly declining. In the 1979 Flora survey of Leicestershire it was found in 102 of the 617 tetrads.

    In the current Checklist (Jeeves, 2011) it is listed as Alien (archaeophyte); occasional, but probably rare now on arable land

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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