The fungus Exobasidium japonicum causes galls on the live leaves of Rhododendron species including azaleas. The galls are irregularly swollen, pale green at first then chalky white.
Where Rhododendron species are present.
When Rhododendron species are in leaf.
Widespread in Britain, though not well recorded.
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