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03-10-2025 22:17

White asco on Fagus grandifolia leaf
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White asco on Fagus grandifolia leaf
Francois Guay, 03-10-2025 22:17
Francois GuayHi everyone,
 

I found this white, star-shaped asco on a Fagus grandifolia leaf in Quebec, Canada.

Spores: 15–16.6 × 3.5–4.3 µm

Asci: IKI+

Here’s the iNat link with photos and microscopy:


Any idea what it could be?

Thanks!