So, I kept finding this stuff on different Pedunculate Oak leaves while sieving leaves and I had no clue what it was. Posted it on iSpot and was told it looks like a fungus and was directed here. I know zilch about fungi and I somehow know even less about whatever this is… Erysiphe alphitoides was given as a possibility but I wouldn’t have any clue whatsoever personally! Absolutely ANY help is greatly appreciated, please and thank you!!!

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