Sycamore Tarspot - Rhytisma acerinum
This fungus causes a raised shiny black spot to appear on the leaves of the host trees.
Grows on Sycamore and sometimes on other species of Maple.
Late Summer until the leaves fall in Autumn.
The fungus overwinters on fallen leaves. Fresh spores are produced in Spring, these have a sticky coating. The spores attach themselves to the new leaves as they form. The fungus does no lasting harm to its host tree.
Very common and widespread in Britain.
Very common in Leicestershire and Rutland.
Leicestershire & Rutland Map
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