... from Croatia, June 2013. After finding I had bad conditions for microscopy but already determined as L. tuberculata. Later, I got some doubts about this determination and yesterday and today I re-examined the specimen and examined the moss(es) around.
The only species I find fitting to large extent is L. tuberculata, in fact. But - my most problem ist that no moss like Pleuridium could be found in the vicinity.
The very likely host is a Pottiaceae, and in another forum I posted fotos of this moss that could be determined by a moss-expert with some doubt as cf. Trichostomum triumphans:
https://nafoku.de/forum/202403_0023_0001.htm
In the vicinity there was another moss growing, it is Bryum klingraeffii :
https://nafoku.de/forum/202403_0030_0001.htm
The morphology of the fungus fits quite well with L. tuberculata as I would say (?) - the spores are about 11-13 µm without ornament (hard to measure) and about 13-17 µm with. The "warts" are roundish and about 1,5-3,5 µm large. But what about the moss host? For L. tuberculatella the moss would perhaps be "o.k." - but the warts on the spores of this species are definitely smaller.
Can somebody bring more clarity?
Best regards, Lothar

(fotos 1-3 fungus, 4: likely host-moss dry, 5-7 in water 2013, 8-9 in KOngo-NH3 2024, 10 in water 2024, 11-16 in lactophenolic cotton blue 2024).