Accès membres

Mot de passe perdu? S'inscrire

05-07-2025 12:38

Åge Oterhals

I found this pyrenomycetous fungi in pine forest o

01-06-2025 09:37

Charles Aron Charles Aron

Hi All, I found this Octospora growing with liver

06-07-2025 19:36

Castillo Joseba Castillo Joseba

me mandan el material de Galicia (España) recolec

07-07-2025 19:22

David Chapados David Chapados

Hi,Does anyone know what could this anamorph be?ht

02-07-2025 18:45

Elisabeth Stöckli

Bonsoir,Sur feuilles d'Osmunda regalis (Saulaie),

04-07-2025 20:12

Josep Torres Josep Torres

Hello.A fungus growing on the surface of a trunk o

20-06-2025 08:33

Josep Torres Josep Torres

Hello.Small, blackish, mucronated surface grains s

28-06-2025 16:00

Josep Torres Josep Torres

Hello.A tiny fungus shaped like globose black grai

04-07-2025 12:43

Castillo Joseba Castillo Joseba

me mandan el material seco de Galicia (España) 

03-07-2025 18:40

Castillo Joseba Castillo Joseba

me mandas el material seco de Galicia (España) re

« < 1 2 3 4 5 > »
Peziza sp.
Luc Lenaerts, 17-05-2023 14:59
Luc LenaertsHello,
On the 11th of May 2023 I found in Hengelhoef, Houthalen (Belgium), in forest, this Peziza:
Length about 5-6 cm, width 3-4 cm, hymenium according to Standard Soil Color Charts 7.5 YR 4/6 brown and 5/6 bright brown; exterior much paler and soon appearing grey-white; no juice present when injured; growing near beech and oak, on the soil or on small twigs; spores with small warts, < 1 µm high, not apiculate, in water with 2 large oil drops; spores in water: (16.0-) 16.8-18.4 (-19.2) x (8.2-) 8.9-10.3 (-11.0) µm, Q= (1.6-) 1.7-1.9 (-2.0), spores in coton blue: (15.5-) 16.4-18.2 (-19.1) x (8.3-) 8.8-9.8 (-10.3) µm, Q= (1.7-) 1.8-2.0 (-2.1); asci Melzer +, paraphyses simple, with small club-shaped thickening on top, with colourless content, not moniliform; excipulum: layered with different types of layers (hyphae, round cells, some angular cells.
Seems to be Peziza alvernensis, except the presence of 2 oil drops in all spores; an other possibility is Peziza domiciliana but I haven't any idea about the excipulum of this Peziza. The spores are too small for Peziza emileia and too big fot Peziza domiciliana.
Who can help?
Luc Lenaerts
  • message #76157
  • message #76157
  • message #76157
  • message #76157
  • message #76157
  • message #76157
  • message #76157
  • message #76157
  • message #76157
  • message #76157
Nicolas VAN VOOREN, 17-05-2023 15:37
Nicolas VAN VOOREN
Re : Peziza sp.
These two "guttules" are strange indeed.
The spore cize and ornamentation fit to P. arvernensis, but the latter shows ascospores with bipolar spore granules (in livng state). Maybe your spores are dead and these BSG have merged into these large bodies... Can you check this point with mature ascospores present in asci or just ejected?

I have no experience of the true P. domiciliana, but this species should have smaller ascospores. But why not...
Peziza emileia is excluded here, it doesn't belong to Peziza s. str.
Luc Lenaerts, 17-05-2023 18:04
Luc Lenaerts
Re : Peziza sp.
Thanks for the logical explanation of dead spores.
The granules were not present in all spores.
Luc Lenaerts
Nicolas VAN VOOREN, 18-05-2023 11:52
Nicolas VAN VOOREN
Re : Peziza sp.
Do you think possible to show some asci containing living spores?
Luc Lenaerts, 19-05-2023 09:37
Luc Lenaerts
Re : Peziza sp.
Unfortunately, the material has dried.
I only have a few other pictures of the asci in Melzer.
  • message #76175
  • message #76175
  • message #76175
  • message #76175
  • message #76175
Mirek Gryc, 20-05-2023 08:55
Re : Peziza sp.
Hi

In my opinion, the spore content is suitable for Peziza arvernensis.

Mirek