14-11-2025 18:31
Lothar Krieglsteiner
Hello,can somebody provide me with a file of:Rothe
14-11-2025 16:26
Marian Jagers
Hello everyone, On dead wood of Cytisus scoparius
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
unknown discomycete on the Petasites petiole
Mlcoch Patrik,
15-01-2020 20:10
Please about determination this interesting collections from summer. Apothecia only several milimetres in diam., without marginal setacceous cells, excipulum consist of subhyaline to yellowish cells of textura angularis-(intricata), 8-10 x 5-7,5 um. Asci IKI- in lugol reagens, 90-100x8,5-9,5 um, base (see fig. 2 - in dead, detail 6), paraphyses 112 x 7 um, guttulate (OCI see fig. 2 - in dead, detail 3 and 5), ascospores 0-1-septate, 17-19,5 x 4,5-5,5(5,7) um, Q=3,5-4, Qav=3,8, Me=18x4,8 um.
On dead petiole of Petasites hybridus, Slovakia, near the Tatra National Park, 800 metres above sea level, soc. Typhula uncialis.
Thanks you for determination.
22-8-19-ph2-2--0001.jpeg
22-8-19-ph2-2-kopie-0001.jpg
Hans-Otto Baral,
15-01-2020 20:49
Re : unknown discomycete on the Petasites petiole
This is Micropeziza umbrinella (= Allophylaria spoederholmii).
Let me say that the majority of cells are dead in your "live" collage anyway. Water alone is not sufficient, avoiding pressure keeps them alive.
Zotto