Unusual tar spot fungus from Hatfield Moors

Colin Howes identifed  the Willow Tar-spot Fungus Rhytisma salicinum on Hatfield Moors National Nature Reserve (SE/6804) on the 20th October 2010. The tar-spot affected Grey Willow Salix cinerea and Goat Willow S. caprea shrubs along a 50+ metre stretch of ride in the sandy heathland area.