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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Large red pouch galls sparsely covered in hair, extending on the lower or occasionally upper side of leaves of Sibbaldiopsis tridentata, apparently containing erineum within.
Unless noted otherwise in the ID Notes, observations of this gall are collected in the Observation Field Gallformers Code with value s-tridentata-red-pouch-gall on iNaturalist. You can view them here: