Bluebell Rust - Uromyces muscari
Bluebell rust affects various Bluebell species and causes yellowed areas on the leaves filled with dark brown/black pustules.
Note that Bluebell Rust is given the scientific name Uromyces hyacinthi in other parts of Europe, but this is currently treated as a synonym of U. muscari in the UK.
On the leaves of various Bluebell species.
March to May
Widespread and fairly frequent in Britain.
Fairly frequent 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