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21-08-2025 18:09

Semble Thecotheus
Edmond POINTE Edmond POINTE

Bonjour Amis mycologues.Trouvé sur crottin de che

22-08-2025 18:10

Protocrea ?
Ethan Crenson

Hello everyone,  I found what I think might be P

20-08-2025 19:04

Adelphella babingtonii - lacking much brown pigment
Ethan Crenson

Hello, This asco was found on the same wood as my

22-08-2025 08:41

Literature request
Masanori Kutsuna

Hello.Can anyone help me to get this article?Liu H

21-08-2025 02:18

Helicoma muelleri?
Stefan Jakobsson

On a necrotic section of a living Tilia cordata I

18-08-2025 23:15

S.vitreola?
Zoe Vélez Zoe Vélez

Hola foro, gracias por aceptar la creación de mi

19-08-2025 20:58

Hymenoscyphus ? on very wet wood
Ethan Crenson

Hi all, Here is what I believe to be a Hymenoscyp

12-08-2025 19:44

Literature request on Clypeosphaeriaceae
Enrique Rubio Enrique Rubio

Could someone send me a pdf copy of this article?S

18-08-2025 15:17

bitunicate ascomycete on dead Sphagnum from Norway
Lothar Krieglsteiner Lothar Krieglsteiner

... on 6.7.25 in a subarctic mire near a small lak

18-08-2025 15:07

pyrenomycete on dead parts of foliose liverwort from Norway
Lothar Krieglsteiner Lothar Krieglsteiner

.. 20.7.25, in subarctic habital. The liverwort i

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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