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30-08-2025 18:29

Rutstroemia
Joaquin Martin

Hi,I found this undetermined ascomycete on broadle

29-08-2025 19:04

Yellow apothecia on cow dung without hairs - Cheilymenia spec.?
Thomas Flammer

Spores 21.2 - 26.2 x 8.3 - 11.3 µm - Q: 2.20 - 2.

28-08-2025 17:24

Literatur request J. Berthier, Typhula
Thomas Flammer

I know, that this is not the real topic of this fo

29-08-2025 05:16

Teleomorph of Dendrostilbella smaragdina ?
Francois Guay Francois Guay

I think I may have found the teleomorph of Dendros

24-08-2025 21:59

Podospora
Edmond POINTE Edmond POINTE

Bonsoir amis mycologues,Trouvé sur crottin de che

27-08-2025 12:02

On Abies alba macroscopically similar to Propolis sp.
Pavol Palo

Hello dear friendsI would like to ask for sharing

25-08-2025 17:37

Petit asco indéterminé
François Freléchoux François Freléchoux

Bonjour,Nous avons trouvé samedi dernier à l'ét

24-08-2025 21:30

Orbilia dryadum ?
Ethan Crenson

Found yesterday in a New Jersey park.  An Orbilia

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

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Pyrenopeziza-like species with 4-spored asci
Nicolas VAN VOOREN, 17-06-2010 13:39
Nicolas VAN VOORENOn herbaceous stem, I found a Pyrenopeziza-like species, with asci containing only 4 spores!
The dark apothecia open in wet conditions

Asci 40-44 x 5-6 µm, with crozier, 4-spored, apical ring IKI+ (bb)
Paraphyses without VB, Ø 1-2.5 µm
Spores fusoid, with small LBs, 11-16 x 2-2.5 (2.7) µm
Cells at the margin with short "hairs" (max length 25 µm), enlarged at their base.

Do you have any idea?
  • message #11985
Nicolas VAN VOOREN, 17-06-2010 13:40
Nicolas VAN VOOREN
Re:Pyrenopeziza-like species with 4-spored asci
Marginal hairs...
  • message #11986
Nicolas VAN VOOREN, 17-06-2010 13:40
Nicolas VAN VOOREN
Re:Pyrenopeziza-like species with 4-spored asci
Ascus and spores...
  • message #11987
Hans-Otto Baral, 17-06-2010 13:44
Hans-Otto Baral
Re:Pyrenopeziza-like species with 4-spored asci
Strange! Although I beleive you, I would be happy to see photos of an ascus with 4 spores. Sometimes such a feature is variable. Did you see it in every ascus? Are there any remains of small aborted spores visible?

Also a photo of a section through the apparently thick margin would be valuable.

Zotto
Nicolas VAN VOOREN, 17-06-2010 19:15
Nicolas VAN VOOREN
Re:Pyrenopeziza-like species with 4-spored asci
I verify on two different apothecia, and all the mature asci I saw were containing 4 spores. I didn't observe aborted spores. I'm going to rehydrate the collection to make a photograph of an ascus.
I join a photograph of the section of the marginal excipulum (textura subglobulosa).
  • message #11993
Nicolas VAN VOOREN, 20-06-2010 20:08
Nicolas VAN VOOREN
Re:Pyrenopeziza-like species with 4-spored asci
Here is a (bad) photograph of an ascus containing 4 spores...
  • message #12051
Hans-Otto Baral, 20-06-2010 22:53
Hans-Otto Baral
Re:Pyrenopeziza-like species with 4-spored asci
O.k., and you have no idea of the plant?

Zotto
Nicolas VAN VOOREN, 21-06-2010 08:05
Nicolas VAN VOOREN
Re:Pyrenopeziza-like species with 4-spored asci
Sorry, I don't have any idea; here is a macrophoto of the stem.
  • message #12064