witch-hazel cone gall

== English == === Noun === witch-hazel cone gall (countable and uncountable, plural witch-hazel cone galls) Cone-shaped distortions of the leaves of witch-hazel trees, caused by aphids of species Hormaphis hamamelidis (witch-hazel cone gall aphid). === References === Witch-hazel cone gall aphid on Wikipedia.Wikipedia Hormaphis on Wikispecies.Wikispecies