Accès membres

Mot de passe perdu? S'inscrire

17-02-2026 09:41

Maren Kamke Maren Kamke

Good morning, I found a Diaporthe species on Samb

16-02-2026 21:25

Andreas Millinger Andreas Millinger

Good evening,failed to find an idea for this fungu

08-12-2025 17:37

Lothar Krieglsteiner Lothar Krieglsteiner

20.6.25, on branch of Abies infected and thickened

17-02-2026 17:26

Nicolas Suberbielle Nicolas Suberbielle

Bonjour à tous, Je recherche cette publication :

03-02-2013 19:50

Nina Filippova

Good time), I've compared this specimen with the

15-02-2026 04:32

Tomaz Vucko Tomaz Vucko

One more specimen that is giving me some descent a

17-02-2026 13:41

Isabelle Charissou

Bonjour, est-ce que quelqu'un pourrait me fournir

16-02-2026 18:34

Thierry Blondelle Thierry Blondelle

Bonjour,La micro de cet anamorphe de Hercospora su

16-02-2026 17:14

Joanne Taylor

Last week we published the following paper where w

16-02-2026 16:53

Isabelle Charissou

Bonjour, quelqu'un pourrait-il me transmettre un

« < 1 2 3 4 5 > »
Cistella geelmuydenii?
Philipp Eschmann, 05-04-2022 15:28
Philipp EschmannGrüezi

I 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
  • message #72403
  • message #72403
  • message #72403
  • message #72403
  • message #72403
  • message #72403
  • message #72403
  • message #72403
  • message #72403
Stip Helleman, 05-04-2022 21:06
Stip Helleman
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
Hans-Otto Baral
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
Philipp Eschmann
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... :-)