Meadowsweet Rust Fungus - Triphragmium ulmariae


    The bright orange Meadowsweet Rust Fungus Triphragmium ulmariae develops as a chemically induced swelling, arising from the lower surface of Meadowsweet leaves. The fungus attacks the petioles and / or midribs of the leaves.

    Identification difficulty

    It may be found by careful observation anywhere that the plant Meadowsweet is present.

    Life History

    The rust's spores reach the Meadowsweet via air movements and are spread from the galls that develop on the petioles and / or midrib veins. The rust has a severe effect on the survival of Meadowsweet seedlings.

    UK Status

    Common and widespread in Britain.

    VC55 Status

    Fairly common in Leicestershire and Rutland.

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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