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Photo#1942638
gall on white oak
Copyright © 2021 Doug Wechsler

gall on white oak
Ft. Washington State Park, Montgomery County, Pennsylvania, USA
August 7, 2020
Size: 5 mm
on underside of white oak (Quercus alba) leaf
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Contributed by Doug Wechsler on 22 February, 2021 - 7:25pm

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