This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Oak marble galls . Oak Marble galls one with Phoma gallorum fungal attack Chapeltoun North Ayrshire Scotland selfmade Roger Griffith Rosser Galls on Quercus
Page 2023 Free-images.com. All images are Public Domain