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

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