Erysiphe polygoni is a powdery mildew affecting Polygonaceae.
Unless identified by a recognised expert, a photo is required and the specimen should be examined with a microscope. In the comments box, state the key or ID method used and describe the size and identifying characters.
Wherever the host Polygonaceae plants are present.
Whenever the host Polygonaceae plants are in leaf.
Widespread in Britain, particularly in England and Wales.
Status in Leicestershire and Rutland not known.
Leicestershire & Rutland Map
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Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015