15-01-2026 15:55
Lothar Krieglsteiner
this one is especially interesting for me because
17-01-2026 19:35
Arnold BüschlenHallo, ich suche zu Cosmospora aurantiicola Lite
16-01-2026 00:45
Ethan CrensonHi all, On decorticated hardwood from a New York
18-01-2026 12:24
Josep Torres
Hello.An anamorph located on the surface of a thin
08-12-2025 17:37
Lothar Krieglsteiner
20.6.25, on branch of Abies infected and thickened
10-01-2026 20:00
Tom SchrierHi all,We found picnidia on Protoparmeliopsis mur
pyrenomycete on Quercus
Lothar Krieglsteiner,
15-01-2026 15:55
this one is especially interesting for me because it is the host of an Unguiculariopsis that I plan to show here soon. First, I would like to know more about hte host. Growing on Quercus (Germany, Baaria), attached twigs at lying middle-aged log. The stromata contain some perithecia with white content (hyaline spores at least for long time). The asci are iodine-negative and bear croziers. There are plenty periphyses. The spores are for a long time hyaline, with the second cell distinctly enlarged, and measurea about 19-23/4-5,5 µm. The pink color in the fotos is from phloxine (mixed with water).
Can somebody help me with the identification?
Best regards, Lothar
Lothar Krieglsteiner,
18-01-2026 18:50
Re : pyrenomycete on Quercus
today I re-examined the Unguiculariopsis. It could well be U. robergei which I had before but know that it surely still is a collectiv species.
I would much be interested what the host is - can somebody take a look and give a hint?
Best regards, Lothar
I would much be interested what the host is - can somebody take a look and give a hint?
Best regards, Lothar
Björn Wergen,
20-01-2026 00:39
Re : pyrenomycete on Quercus
Hi Lothar,
do you have a sample of the Unguiculariopsis? If so, can you send this to me (if so, i will tell you the address via email)?
As your host is not Paraxylaria xylostei, U. robergei is excluded.
regards
björn
do you have a sample of the Unguiculariopsis? If so, can you send this to me (if so, i will tell you the address via email)?
As your host is not Paraxylaria xylostei, U. robergei is excluded.
regards
björn
Björn Wergen,
20-01-2026 00:45
Re : pyrenomycete on Quercus
The species where the Unguiculariopsis probably grows on, or at least what you have shown above, is Pseudotrichia minor. This is a species which grows on other pyrenomycetes. You can try a longitudinal section to see how it grows on the pyreno debris below.
It is possible that the host of the Unguiculariopsis is not actual Pseudotrichia minor, but the old pyreno (Botryosphaeria?).
It is possible that the host of the Unguiculariopsis is not actual Pseudotrichia minor, but the old pyreno (Botryosphaeria?).
