first of all, thank you very much for your answer.

Of course you are right and I must confess to my shame that the larger spores are from an Apothecium,
which I worked on later. I had kept the substrate moist during this time, but I would never have thought that another species with almost the same macroscopy could grow on the branch in roughly the same place.
Therefore, I only looked at the spores and then made a key. Rookie mistake!!!
Now I know better.
I am also attaching a macroscopic picture of the second species.
I also have the microscopic characteristics available, but I'd better do it in a separate entry.
You are certainly right about Pyrenopeziza_cf. aquosa. If I look at the prov. key of Ingo, I finally come to P._aquosa, or "Mollisa_calluna", but the spores don't fit.
The micro features fit "aquosa" pretty well.
The asci are approx. 42-48 x 4.5-5.4ym.
The golden yellow exudate was abundant, additionally with crystals? I attach pictures.

Sorry for the long text.

Best regards
Dirk