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31-01-2026 09:17

Marc Detollenaere Marc Detollenaere

Dear Forum,On decorticated wood of Castanea,I foun

30-01-2026 22:49

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Bonjour tous, Récolté dans les Vosges le 22/10/

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Small hairy discs on Castanea
Marc Detollenaere, 31-01-2026 09:17
Marc DetollenaereDear Forum,

On decorticated wood of Castanea,I found some small hairy grey discs.
Asci measured 42x6µ, the spores were hyaline 6x2µ and contained a small guttule at both sides. Hairs were also hyaline, smooth,cylindric, septate and measured 55-60µ. 
Any ideas?

Marc
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Kosonen Timo, 31-01-2026 11:30
Kosonen Timo
Re : Small hairy discs on Castanea
looks like O. transiens. Check for dextrinoid hair apex.

Timo
Marc Detollenaere, 31-01-2026 17:04
Marc Detollenaere
Re : Small hairy discs on Castanea
Hi Timo,

Using IKI no dextrinoid reaction of the hairs was seen. Asci had an amyloid pore.

Marc
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