Galls are abnormal growths on plants, kind on analogous to warts on people. They may be caused by viruses, fungi and more. The galls here are the result of the Witch-hazel Cone Gall Aphid. #witchhazelconegallaphid #hormaphishamamelidis #insects #galls #eightteenmilecreek #hamburgny #eriecounty #wny