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18-03-2026 18:42

Gonzalez Garcia Marta

I have collected some lyre-shaped apothecia on the

18-03-2026 17:22

Katarina Pastircakova

Hi there,I'm looking for the following literature:

27-11-2025 15:41

Thomas Læssøe

Spores brownish, typically 4-celled; 26.8 x 2.4;

18-03-2026 13:09

Khomenko Igor Khomenko Igor

I recently examined Celtis occidentalis branches

18-03-2026 11:52

Thomas Læssøe

https://svampe.databasen.org/observations/10493688

11-03-2026 17:36

Michel Hairaud Michel Hairaud

Bonjour, Je cherche des indices  pour cette réc

17-03-2026 10:40

Martine  Vandeplanque Martine Vandeplanque

Bonjour à tous.Chaque année en mars ou avril, il

17-03-2026 19:41

Bernard CLESSE Bernard CLESSE

Bonsoir à toutes et tous,Pourriez-vous m'aider à

12-03-2026 19:44

Enrique Rubio Enrique Rubio

Hi to everybody.Can you give me any suggestions ab

17-03-2026 10:09

François Freléchoux François Freléchoux

Bonjour, Voici la description rapide d'un petit d

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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