witch-hazel cone gall

English

witch-hazel cone galls

Noun

witch-hazel cone gall (countable and uncountable, plural witch-hazel cone galls)

1. 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