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Georges GreiffDear all,I would be most grateful for the followin
 
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 Stephen Martin Mifsud
                Stephen Martin Mifsud
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 Stephen Martin Mifsud
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 Bernard Declercq
                Bernard Declercq
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 Michel Hairaud
                Michel Hairaud
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Thomas Læssøehttps://svampe.databasen.org/observations/10283169
 
                                    23-07-2022 20:47
Stefan JakobssonI made an abundant collection of some Preussia/Spo
Cistella geelmuydenii?
    
                    Philipp Eschmann,
                05-04-2022 15:28
    
     Grüezi
GrüeziI found this on Corylus avellana. Apothecia are white when fresh and up to about 0.3mm in diameter.
The spores in the picture measure 4.7 - 7.4 x 2.4 - 3.7µm Q = 1.7 - 2.4
Ascus apex is hemyamiloid (didnt check KOH+IKI, only IKI), with croziers
It seems to fit Cistella geelmuydenii quite well. Can anyone confirm?
Thanks in advance & many greetings
Phil Esc
                                    Stip Helleman,
                                05-04-2022 21:06            
             
                Re : Cistella geelmuydenii?
                Dear Phil,
To me this looks like a Hyphodiscus, I think a long time ago I named a collection like this also C. geelmuydenii. Probably C. geelmuydenii is a Hyphodiscus too. Check for Fungal remnants under the Fruitbodies and if you find a anamorph previous known as Catenulifera
Cheers,
Stip
                                    Hans-Otto Baral,
                                05-04-2022 21:43            
             
                Re : Cistella geelmuydenii?
                I have no good concepts in Cistella, but it could be geelmuydenii, except that the spores are much wider than usual (5-8 x 2-2.5). But when  measure your photo I get 2.5-3 µm.
The ectal excipulum is actually somewhat gelatinized which would point to a Hyphodiscus. 
Unai Fernandez sent me a few days ago a collection which I considered to be C. geelmuydenii. But that had narrower spores and totally thin-walled exciple. I advised him to take a sequence as I am curious, because he considered Hyphodiscus as a possibility. There are so few sequences of Cistella in GenBank.
                                    Philipp Eschmann,
                                06-04-2022 17:56            
             
                Re : Cistella geelmuydenii?
                Thanks for your comments.
I tried to find that anamorph and saw some conidia that might or might not fit. But as always with anamorphs, I only saw conidia but destroyed the conidiophores completely during preparation. I also remeasured the spores in the picture and some additional spores, with the same results. There are a lot of fungal remnants on the wood but I can't say if the fungus growa on it. I'll give up on this one, this is too difficult for me... :-)
                
                
                
                
                
                            I tried to find that anamorph and saw some conidia that might or might not fit. But as always with anamorphs, I only saw conidia but destroyed the conidiophores completely during preparation. I also remeasured the spores in the picture and some additional spores, with the same results. There are a lot of fungal remnants on the wood but I can't say if the fungus growa on it. I'll give up on this one, this is too difficult for me... :-)








