White anamorf on Alnus - Forum ASCOFrance

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White anamorf on Alnus

Margot en Geert Vullings, 04-02-2024 14:10

On a fallen Alnus that still had some of the bark on it, we saw these white rosettes in the bark cracks, they seem to be on something black.
It turns out to be an anamorph with conidiospores, sizes:
5 - 5.8 (5.9) × (1.2) 1.3 - 1.5 µm
Me = 5.3 × 1.4 µm ; Qe = 3.8
We have no idea what this could be?
Kind regards, Margot&Geert

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