Unknown columnar-oak-stem-swelling
The inducer of this gall is unknown or undescribed.
Hosts: Quercus x bimundorum
Detachable: integral
Color: brown, gray, green
Texture: hairless
Abundance:
Shape:
Season: Spring
Related:
Alignment: integral
Walls: thick
Location: stem
Form: abrupt swelling
Cells: polythalamous
Possible Range:i
Common Name(s):
Synonymy: 
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
“
Thick-walled, polythamous, abrupt swellings at the base of new growth on a cultivated columnar oak, likely Quercus alba x robur (ie x bimundorum). An adult cynipid wasp emerged in late April, not obviously matching any known species to a cursory initial look.
”- Gallformers Contributors: (2024) Gallformers ID Notes©
Further Information:
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Unless noted otherwise in the ID Notes, observations of this gall are collected in the Observation Field Gallformers Code with value columnar-oak-stem-swelling on iNaturalist. You can view them here:
