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.
It may be found by careful observation anywhere that the plant Meadowsweet is present.
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.
Common and widespread in Britain.
Fairly common in Leicestershire and Rutland.
Leicestershire & Rutland Map
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Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015