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Mot de passe perdu? S'inscrire

14-09-2025 22:16

Cheilymenia stercorea
Philippe PELLICIER

Apothécies petites jusquà 3 mm, oranges, avec de

13-09-2025 14:01

Otidea platyspora or something else?
Thomas Flammer

dark brown apothecia, splitIKI-Spores biguttulate

13-09-2025 14:10

Hymenoscyphus on Rubus
Wim de Groot

We found this hymenoscyphus on rubus fruticulosis.

13-09-2025 15:43

Recherche
Edmond POINTE Edmond POINTE

Bonjour Christian,J'ai trouvé deux spores ressemb

11-09-2025 16:57

Marthamycetales revision published
Jason Karakehian Jason Karakehian

Our revision of Marthamycetales (Leotiomycetes) is

10-09-2025 23:53

Strickeria kochii?
Marcel Heyligen Marcel Heyligen

Found on Robinia pseudoacasia together with Diapor

10-09-2025 17:18

Pseudocoprotus catenipilus ???
Blasco Rafael Blasco Rafael

Hola, encontre este estiercol de vaca estos apotec

02-09-2025 11:34

dark- and small-spored Sordariomycetes on Fraxinus - Denmark
Thomas Læssøe

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

07-09-2025 08:19

Hymenoscyphus?
Josep Torres Josep Torres

Hello.Tiny pinkish discomycetes, photographed and

09-09-2025 12:07

Trichobolus
Edmond POINTE Edmond POINTE

Bonjour amis mycologues,Trouvé sur moquette de ch

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Claussenomyces?
Marc Detollenaere, 20-03-2020 11:43
Marc Detollenaere

Dear Forum,


On the bark of Quercus, I found some small pale yellow apothecia with pruinose aspect.


Asci were inoperculate and measured 65-72x9µ. The spores were 3-septate and contained a lot of guttules( 22-23x4-4.5µ). Some paraphyses were branched.There was a blue coloration of the apical apparatus with IKI.No conidia were seen.


Could this be Claussenomyces or rather Pezicula?


 


Marc

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Hans-Otto Baral, 20-03-2020 12:57
Hans-Otto Baral
Re : Claussenomyces?
Could you please figure the amyloid reaction? It excludes Claussenomyces.
Marc Detollenaere, 20-03-2020 13:49
Marc Detollenaere
Re : Claussenomyces?
Not the entire apical apparatus but a superficial blue line on the top of the ascus
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Hans-Otto Baral, 20-03-2020 17:01
Hans-Otto Baral
Re : Claussenomyces?
So this is Pseudohelotium sordidulum (= P. vernale). I have it in Hyaloscyphaceae.

Spore width is 2.8-4 µm in this species, I feel your spore width data are too high, isn't it?
Marc Detollenaere, 20-03-2020 19:14
Marc Detollenaere
Re : Claussenomyces?

You are right Zotto, sporewidth was a bit overestimated. I again measured 15 spores and had a mean of 3.8µ.


It matches very well with your pictures in IVV.


Thank you very much


 


Marc