A gall from a knopper wasp, one of the various types which are found on oak trees, usually towards autumn. This was on a tree on the steep northern bank of the Barley Field.
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Knopper gall, Barley Field oak tree
A gall from a knopper wasp, one of the various types which are found on oak trees, usually towards autumn. This was on a tree on the steep northern bank of the Barley Field.