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15-01-2025 23:21

Andgelo Mombert Andgelo Mombert

Bonsoir,Sur branche morte d'Acer (A. campestre ou

15-01-2025 23:20

Andgelo Mombert Andgelo Mombert

Bonsoir,Sur branche morte d'Acer (A. campestre ou

14-01-2025 10:11

Margot en Geert Vullings

On a dead branch of Cryptomeria that has been lyin

15-01-2025 18:36

François Valade François Valade

hello forthe french fungi types project, I am loo

14-01-2025 18:17

Martine  Vandeplanque Martine Vandeplanque

Bonsoir à tous. Grande première rencontre avec

13-01-2025 20:17

Jorge Hernanz

Buenas tardes, adjunto datos de éste pequeño pez

10-01-2025 11:24

Wim de Groot

We found this small black spots on perennial stem

10-01-2025 18:19

Marc Detollenaere Marc Detollenaere

Dear Forum,I found some colonies of orange coloure

19-12-2024 11:54

michel bertrand

Bonjour, Après moultes recherches plutôt infruc

12-01-2025 12:52

Thomas Flammer

Spores cylindrical-fusiform, 7 times septated, IKI

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pyrenomycete from French Alps
Lothar Krieglsteiner, 01-08-2024 13:16
Lothar Krieglsteiner.. on Alnus alnobetula, 16.7.24.
When finding I first thought of a Trichoderma teleomorph similar to T. lixii. When cutting I got the first surprise when I saw the light-colored flesh. The flesh, by the way, was rather soft (more like in Trichoderma than in typical pyrenomycetes). Under the microscope I found polysporous asci with light brown allantoid spores with size about 5-6,5/0,8-1 µm - similar to Eutypella and similar genera. I do not have a hint - who has one?
Best regards, Lothar

(P.S. I once before had a similar experience - thinking of a soft-fleshed black Trichoderma spec. but "becoming" a fully different pyrenomycete. It was in Portugal and there was no hint - is it today?:
http://www.ascofrance.fr/search_forum/75199
  • message #79820
  • message #79820
  • message #79820
Andgelo Mombert, 01-08-2024 18:08
Andgelo Mombert
Re : pyrenomycete from French Alps
Hello,
Diatrypella sp., i think.

Andgelo
Lothar Krieglsteiner, 01-08-2024 19:01
Lothar Krieglsteiner
Re : pyrenomycete from French Alps
Hello Angelo,
thank you for your contribution. ...
Yes, this seems probable from the microscopy.
But I never found such a soft-fleshed specimen before - and no specimen that looked this way macroscopically. Maybe it can be determined still.
Best regards, Lothar
Lothar Krieglsteiner, 02-08-2024 09:11
Lothar Krieglsteiner
Re : pyrenomycete from French Alps
If it is a Diatrypella it can only be D. tocciaeana - or a new species.
I still am hesitating, because I know Diatrypella as quite hard fungi, fully immersed and usually old and destroyed when becoming free.
Hm ...