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.
Red erineum on the underside of leaves of Quercus engelmannii. Observed in California in June.”
- Gallformers Contributors: (2021) Gallformers ID Notes©
Unless noted otherwise in the ID Notes, observations of this gall are collected in the Observation Field Gallformers Code with value q-engelmannii-erineum-gall on iNaturalist. You can view them here: