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 bulge-like swelling at the base of Silphium terebinthinaceum seeds in the fall. Observed in November in Illinois23456.
Unless noted otherwise in the ID Notes, observations of this gall are collected in the Observation Field Gallformers Code with value s-terebinthinaceum-seed-gall on iNaturalist. You can view them here: