Accès membres

Mot de passe perdu? S'inscrire

20-08-2022 15:49

Georges Greiff

Dear all,I would be most grateful for the followin

19-08-2022 19:05

Stefan Jakobsson

On a petiole of a leaf of what seems to be Populus

09-08-2022 20:06

Stephen Martin Mifsud Stephen Martin Mifsud

I have found an interesting aspergillus on flowers

13-08-2022 17:18

Stephen Martin Mifsud Stephen Martin Mifsud

I assumed these are weak colonies of Neurospora on

18-08-2022 17:50

Thomas Læssøe

https://svampe.databasen.org/observations/10283042

10-08-2022 15:45

Pierre-Yves Julien

Récolte le 31/07/2022 – Ozoir-la-Ferrière (77)

16-08-2022 20:07

Bernard Declercq Bernard Declercq

Good evening,Who could be so kind to supply me fol

07-01-2014 23:04

Michel Hairaud Michel Hairaud

Bonjour à tous, Hi to all. This tiny bright yell

16-08-2022 15:50

Thomas Læssøe

https://svampe.databasen.org/observations/10283169

23-07-2022 20:47

Stefan Jakobsson

I made an abundant collection of some Preussia/Spo

« < 211 212 213 214 215 > »
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... :-)