Our ID Notes may contain important tips necessary for distinguishing this gall from similar galls and/or important information about the taxonomic status of this gall inducer.
Gallformers ID Notes
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A hairy, truncated conical gall with a flat top containing a sunken ring. On Quercus douglasii, between veins on the lower side of the leaf. Observed in California in November, when galls appeared to no longer be fresh.
Unless noted otherwise in the ID Notes, observations of this gall are collected in the Observation Field Gallformers Code with value q-douglasii-truncate-cone-gall on iNaturalist. You can view them here: