Leaf gall on Blackthorn
Introduction
The photograph on this page of Leaf gall on Blackthorn by M J Richardson as part of the Geograph project.
The Geograph project started in 2005 with the aim of publishing, organising and preserving representative images for every square kilometre of Great Britain, Ireland and the Isle of Man.
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Image: © M J Richardson Taken: 31 May 2021
The Blackthorn [Prunus spinosa] here had a lot of leaf rolling and discolouration. Such galls can be caused by mites, insect larvae or fungi. The identity of this one is not known; it is not a sawfly as originally thought. When unrolled a caterpillar was discovered Image
