Gall on Arroyo willow (Salix lasiolepis)
This gall is induced by a sawfly (Pontania californica syn. Pontania pacifica)
Bonita Cove, Marin Headlands State Park
Marin County, CA
|Photos or sounds?||Yes|
|Is the organism wild/naturalized?||Unknown|
|Does the location seem accurate?||Unknown|
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