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Project Noah Nature School
Polystepha pilulae
galls found on the top surface of an old fallen brown Willow Oak leaf; they are hard, 1 ⁄16″ to 3 ⁄16″ in diameter, and irregular in shape; green in the spring but now brown & crusty with a cracking surface; can easily be pulled off the leaf.
Willow Oak on urban school campus
Spotted on Oct 27, 2018
Submitted on Oct 28, 2018
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