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 slight swelling of the midrib of Lobelia siphilitica containing the larva of a cecidomyiid. Observed in Iowa in August.
Unless noted otherwise in the ID Notes, observations of this gall are collected in the Observation Field Gallformers Code with value l-siphilitica-slight-midrib-swelling on iNaturalist. You can view them here: