Oak Marble Galls, common on oak trees, are created by a parasitic gall-wasp. Head to our section on invertebrates to find out more.
Photo: AnemoneProjectors, CC BY-SA 2.0, via Wikimedia Commons
Oak Marble Gall
Oak Marble Galls, common on oak trees, are created by a parasitic gall-wasp. Head to our section on invertebrates to find out more.
Photo: AnemoneProjectors, CC BY-SA 2.0, via Wikimedia Commons