Unknown u-americana-petiole-gall
The inducer of this gall is unknown or undescribed.
Hosts: Ulmus americana
Detachable: integral
Color:
Texture:
Abundance:
Shape: globular
Season:
Related:
Alignment:
Walls: thick
Location: petiole, leaf midrib
Form:
Cells: monothalamous
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.
Insect galls of Springfield, Massachusetts, and vicinity
“
Undetermined gall
A monothalamous, subglobular gall at union of blade and petiole. Rough, rather thick-walled, brown. About 7 mm in diameter. One specimen. On elm, Ulmus americana.
”- FA Stebbins: (1910) Insect galls of Springfield, Massachusetts, and vicinity©
Reference: https://www.biodiversitylibrary.org/item/71437#page/36/mode/1up
Further Information:
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See Also:
Unless noted otherwise in the ID Notes, observations of this gall are collected in the Observation Field Gallformers Code with value u-americana-petiole-gall on iNaturalist. You can view them here:
