20-02-2026 18:47
Marc Detollenaere
Hello Forum,On rotten wood of Fagus, I found some
07-02-2023 22:28
Ethan CrensonHello friends, On Sunday, in the southern part of
19-02-2026 17:49
Salvador Emilio JoseHola buenas tardes!! Necesito ayuda para la ident
19-02-2026 13:50
Margot en Geert VullingsWe found this collection on deciduous wood on 7-2-
16-02-2026 21:25
Andreas Millinger
Good evening,failed to find an idea for this fungu
08-12-2025 17:37
Lothar Krieglsteiner
20.6.25, on branch of Abies infected and thickened
17-02-2026 17:26
Nicolas Suberbielle
Bonjour à tous, Je recherche cette publication :
unknown pyrenomycet 2
Gernot Friebes,
29-03-2009 15:18
here is my second pyrenomycet I found yesterday. It grew on a thin twig of a deciduous tree. Spores: 21-23 x 5,5-6,5 µm.
Best wishes,
Gernot Friebes
Gernot Friebes,
29-03-2009 15:19
Re:unknown pyrenomycet 2
perithecia
Gernot Friebes,
29-03-2009 15:24
Re:unknown pyrenomycet 2
spores
Jacques Fournier,
29-03-2009 15:35
Re:unknown pyrenomycet 2
Hi again,
the large allantoid spores could fit Eutypella dissepta (Diatrypaceae) but you need further data to support it.
Please make a vertical section to see how perithecia are arranged, and two slides: one in water or Congo red to see if asci are spindle-shaped and long stipitate, another in Melzer's reagent after pretreatment in 3% KOH to check the presence and reaction of apical ring.
More soon!
Jacques
the large allantoid spores could fit Eutypella dissepta (Diatrypaceae) but you need further data to support it.
Please make a vertical section to see how perithecia are arranged, and two slides: one in water or Congo red to see if asci are spindle-shaped and long stipitate, another in Melzer's reagent after pretreatment in 3% KOH to check the presence and reaction of apical ring.
More soon!
Jacques
Gernot Friebes,
29-03-2009 18:09
Re:unknown pyrenomycet 2
Hello Jacques,
thank you for your good tip. The asci are indeed long stipitate and don't have any reactions in Melzer's reagent.
At first a picture of the perithecia.
Best wishes,
Gernot
thank you for your good tip. The asci are indeed long stipitate and don't have any reactions in Melzer's reagent.
At first a picture of the perithecia.
Best wishes,
Gernot
Gernot Friebes,
29-03-2009 18:09
Re:unknown pyrenomycet 2
spores and asci
Jacques Fournier,
29-03-2009 18:22
Re:unknown pyrenomycet 2
in Eutypella dissepta the apical ring often does not react clearly with iodine. The configuration of the perithecia within the stroma fits E. dissepta. Moreover, the structure of the wood in cross section is much like that of Ulmus, the usual host of this fungus.
I think you can keep this name
Jacques
I think you can keep this name
Jacques