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14-09-2025 22:16

Philippe PELLICIER

Apothécies petites jusquà 3 mm, oranges, avec de

13-09-2025 14:01

Thomas Flammer

dark brown apothecia, splitIKI-Spores biguttulate

10-09-2025 17:18

Blasco Rafael Blasco Rafael

Hola, encontre este estiercol de vaca estos apotec

13-09-2025 14:10

Wim de Groot

We found this hymenoscyphus on rubus fruticulosis.

13-09-2025 15:43

Edmond POINTE Edmond POINTE

Bonjour Christian,J'ai trouvé deux spores ressemb

11-09-2025 16:57

Jason Karakehian Jason Karakehian

Our revision of Marthamycetales (Leotiomycetes) is

10-09-2025 23:53

Marcel Heyligen Marcel Heyligen

Found on Robinia pseudoacasia together with Diapor

02-09-2025 11:34

Thomas Læssøe

https://svampe.databasen.org/observations/10527903

07-09-2025 08:19

Josep Torres Josep Torres

Hello.Tiny pinkish discomycetes, photographed and

09-09-2025 12:07

Edmond POINTE Edmond POINTE

Bonjour amis mycologues,Trouvé sur moquette de ch

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Unknown Asco
Chris Johnson, 04-01-2016 11:27
Good morning

Found on rotten wood of unknown species. Just 0.4mm across on what appeared to be a very short pedicel. Pale yellow with a hint of green (not as green as the image would suggest). Only one apothecium found which is immature.
Asci weakly amyloid in Lugol's, no obvious bluing at the apices: 97-108 x 10-12 µm
Most asci too imature to show spores clearly. The image shown would appear to have muriform spores.
Paraphyses longer than the asci, multi-septate and constricted at the septa.
Not expecting much from this but it might remind members of a genus.

Regards, Chris
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Quijada Luis, 04-01-2016 19:26
Re : Unknown Asco
Dear Chris,

I believe your sample is a Claussenomyces species or at least related, the blue reaction of the wall it is not clear to me, maybe an artifact, and as far as I know only Claussenomyces pseudosugae have blue reaction in the asci wall, but it is clear and strong. There are too many similar species in the genus, I have worked several types species, but I have some more to review and right now I cannot give you a identification with the data that you show. It is important you see the ascoconidia, secondary ascospores that form conidia balls inside the asci when they are living. If you collect again other sample try to photograph a general section of excipulum, more ascospores and the ascoconidia, then maybe we can try to fit at species level.

best wishes,

Luis 

Chris Johnson, 04-01-2016 20:54
Re : Unknown Asco
Dear Luis
Many thanks for looking at this for me. Claussenomyces looks very convincing and I'm more than happy to have a genus at this stage. With just one immature apothecium, it was never going to be conclusive.
The fragment of wood I have hasn't produced any more apothecia but I will revisit the area later this month.
I have noted you comments on what to look for.
Best regards,
Chris