20-12-2025 23:08
Patrice TANCHAUDBonsoir, récolte sur sol sablonneux dans l'arriÃ
21-12-2025 09:32
Hello.A tiny ascomycete found embedded in wood in
20-12-2025 15:47
Mirek GrycHi.These grew on pine wood that was heavily covere
18-12-2025 21:17
Pol DebaenstThe identification took me to Byssonectria deformi
15-12-2025 07:09
Danny Newman
indet. Rutstroemiaceae sp. on unk. fallen leavesMc
19-12-2025 10:10
Patrice TANCHAUDBonjour, récolte réalisée en milieu dunaire, a
18-12-2025 17:23
Bruno Coué
Bonjour,je serais heureux d'avoir votre avis sur c
Hypocreales on old basidiomata of Trametes hirsuta
Ibai Olariaga Ibarguren,
21-04-2020 15:52
Hi,
I hope eveyone is OK.
I was wondering is come could provide a hint to be able to identify this fungus that grew on old basidiomata of Trametes hirsuta growing on a large lof of Fagus sylvatica.Â
The perithecia were more or less globose, growing gregariously, glabrous, initially white and then pale pink, 80-160 µm in diametre.
The ascospores are subglobose to broadly ellipsoid, 1-septate, hyaline, thin-walled, 2.7-3.7 x 2.2 µm, not disarticulating. Asci unitunicate, clavate, with 8 uniseriate spores, approx. 21 x 4 µm. I did not see any hairs in peridial cells (if necessary, I can provide photos).
I have been looking in Hypocreales but did not find any species that looks even close. I would appreciate any help.
Thank you in advance and take care.
Cheers,
Ibai.
Salvador Tello,
21-04-2020 22:10
Ibai Olariaga Ibarguren,
22-04-2020 11:45
Re : Hypocreales on old basidiomata of Trametes hirsuta
Hola Salvador,
gracias por tu idea. La verdad es que miré hace tiempo el material. Lo miraré otra vez por si pudieran ser apotecios, pero no lo creo. Al menos algunas esporas eran claramente septadas. Subiré más fotos pronto.
thanks for the idea. To be honest I looked at the material a long time ago. I will take a look at it again to check if they could be apothecia, but I do not think so. At least some spores were clearly septate. I will upload more pictures soon.
Saludos,
Ibai.
Ibai Olariaga Ibarguren,
22-04-2020 17:01
Re : Hypocreales on old basidiomata of Trametes hirsuta
Hi again,
yes, they are definitely perithecia with a clear ostiole.
The asci have a very inconscicuous ascal apparatus, observed as two very small refractive dots at both sides of the apex.
There is an anamorphic state everywhere in my sample, I think it is Acremonium-like.
Any idea? I think it might belong either to Bionectriaceae, but I am not sure.
_____
Hola Salvador,
sÃ, son peritecios, son ascomas cerrados con un ostiolo apical. Los ascos tienen un aparato ascal muy rudimentario y visible levemente como dos puntos refringentes a cada lado del ápice del asco.
La muestra está completamente colonizada por un anamorfo de tipo Acremonium (creo), que podrÃa ser suyo.
Saludos,
Ibai.
Christian Lechat,
22-04-2020 18:05
Re : Hypocreales on old basidiomata of Trametes hirsuta
Hi to all,
are the hyphal elements covering ascomatal wall smooth or spinulose?
All the best,
Christian
Ibai Olariaga Ibarguren,
22-04-2020 18:10
Re : Hypocreales on old basidiomata of Trametes hirsuta
Hi Christian,
they are completely smooth, 2-3 µm, hyaline to pale yellow.
Thanks in advance.
Ibai.
Salvador Tello,
23-04-2020 14:27
Re : Hypocreales on old basidiomata of Trametes hirsuta
SÃ, defintivamente son peritecios.
Solo me habÃa parecido muy similar a Hyalorbilia erythrostigma y como no apreciaba bien los peritecios en la foto pensé que podrÃas haberte equivocaco. Pensé mal
Saludos.
Salvador.
Solo me habÃa parecido muy similar a Hyalorbilia erythrostigma y como no apreciaba bien los peritecios en la foto pensé que podrÃas haberte equivocaco. Pensé mal
Saludos.
Salvador.
Ibai Olariaga Ibarguren,
23-04-2020 14:47
Re : Hypocreales on old basidiomata of Trametes hirsuta
Era una propuesta muy razonable, ya que los ascos y las esporas se parecÃan mucho y la ecologÃa coincidÃa. Pero tampoco habÃa visto paráfisis.
Gracias por la aportación, no conocÃa H. erythrostigma, pero ahora ya sà :-)
Saludos,
Ibai.








