Hello,
yesterday I took an attached branch of Quercus for further inspection at home to hopefully find some xerotolerant Ascos (Orbilia ....)
What I found - besides Orbilia trapeziformis - was a very small brownish-blackish ascomycetes which I don't know. I have the impression to have found it earlier already, but don't remember ....

Macroscopically reminding at Claussenomyces xylophilus or a small Durella species, very gregaries to crowded, < 1 mm in diam and only visible after rehydration.
The Textura looked a bit like in Durella, dark brown, in KOH blackish-grey.
Unfortunately the hymenium was in all examined apothecia more or less detoratied and I could not verify the paraphyses for sure. They seemed to be cylindrical. Asci with croziers and IKI-negative.
Spores lonh-elliptical, appr. 8-12 x 2,5-3,2, with some small oildrops, reminding Mollisia spores
No reaction of any part of the ascocapr on KOH or Barals solution.

On still attached branch of Quercus.

Any idea?

thank you very much,
Andreas