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Raised circular growths known as silk button spangled galls on the underside of a leaf of the Pedunculate or Common Oak (Quercus robur). They are caused by the lava of the gall wasp Neuroterus numismalis. Bedgebury Forest, Kent, UK. September 2003.
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. They are caused by the lava of the gall wasp Neuroterus numismalis. Bedgebury Forest, Kent, UK. September 2003.){kind=link}