The sorrows of Sycamore

27th August 2006, Sunday

The sycamore leaf above is twice afflicted. The black, yellow-edged patches are caused by tarspot fungus, Rhytisma acerinum, while the red pustules are formed by a mite species variously named Eriophyes macrorhyncus, Aceria cephaloneus and more. They all be one species.

Tarspot is only abundant in areas free of atmospheric sulphur pollution.  These were photographed today in Sedlescombe.