17-01-2026 19:35
Arnold BüschlenHallo, ich suche zu Cosmospora aurantiicola Lite
08-12-2025 17:37
Lothar Krieglsteiner
20.6.25, on branch of Abies infected and thickened
16-01-2026 00:45
Ethan CrensonHi all, On decorticated hardwood from a New York
10-01-2026 20:00
Tom SchrierHi all,We found picnidia on Protoparmeliopsis mur
13-01-2026 07:28
Danny Newman
Chlorociboria glauca on indet. decorticate logThe
15-01-2026 15:55
Lothar Krieglsteiner
this one is especially interesting for me because
13-01-2026 08:43
Danny Newman
Tricladium varicosporioides on indet. decorticate

Dear Forum,
On the bark of Quercus, I found some small pale yellow apothecia with pruinose aspect.
Asci were inoperculate and measured 65-72x9µ. The spores were 3-septate and contained a lot of guttules( 22-23x4-4.5µ). Some paraphyses were branched.There was a blue coloration of the apical apparatus with IKI.No conidia were seen.
Could this be Claussenomyces or rather Pezicula?
Marc
You are right Zotto, sporewidth was a bit overestimated. I again measured 15 spores and had a mean of 3.8µ.
It matches very well with your pictures in IVV.
Thank you very much
Marc





