Is powdery mildew ever granular under microscope?

Sick Plants & Problems
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After being away for 5 days I came back and saw what looked like drywall crumbs like a dot here and there on a few leaves.

I took the leaves off and looked at them under a microscope and they just looked like drywall crumbs and they blew off quite easily

I put in new eyehooks in the ceiling and ever since been noticing drywall here and there.

But now I was thinking perhaps it is PM? It doesn’t look like any PM close ups I could find on an internet search.

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Powder mildew won’t just blow off. . .it’s most likely drywall dust

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Here’s what really fine sawdust looks like on a plant up close… :wink:

image.jpg4032×3024 1.74 MB

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You will hope it’s not aphid exoskeletons as they also appear as white dots and blow off. Anything on underside of leaf…like dark dots?