12-11-2025 09:25
Viktorie Halasu
Hello, I need help with a pale terrestric Pseudom
11-11-2025 20:16
Bohan JiaHi, lastly I have found these tiny yellow decayin
09-11-2025 13:20
Josep Torres
Hello.A tiny ascomycete, appearing as erupting gra
08-11-2025 00:29
Francois Guay
I found this species in Quebec, Canada, on herbace
Pyrenopeziza rubi?
Juuso Äikäs,
13-01-2022 16:33
These were growing on a dead Rubus idaeus cane at the turn of June and July 2020.
There were just a few pics of the spores, asci in IKI and excipululm. The spores measure 7.9 - 10.4 × 2.1 - 2.6 µm.
Is this enough to determine this as P. rubi or are there other alternatives?
Hans-Otto Baral,
13-01-2022 17:31
Re : Pyrenopeziza rubi?
P. rubi or P. escharodes - i cannot say. Both are described with marginal, appressed hairs.
There is an interesting iodine reaction when pretreated with KOH and wahsed with water: Lugol and probably also Melzer give a distinct blue at the margin! I am not sure if this distinguishes rubi from escharodes.
Juuso Äikäs,
13-01-2022 18:10
Re : Pyrenopeziza rubi?
Ok, thanks for the info! I'll have to keep that in mind until I find this again.