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06-09-2019 21:49

Andgelo Mombert

Bonsoir, Sur feuille de Alnus alnobetula, vers 15

17-09-2019 17:53

Jean-Claude Malaval Jean-Claude Malaval

Bonsoir,Espèce de l'île de La RéunionAscomes 1-

06-09-2019 21:41

Andgelo Mombert

Bonsoir, Sur racines de Alnus incana, au bord d'u

19-09-2019 15:08

Sigrid Jakob

I would be grateful for any suggestions on the fol

15-09-2019 01:46

Valencia Lopez Francisco Javier

Hola a tod@sAdjunto fotos de unas Tricharinas sp,

13-09-2019 07:32

Josep Torres Josep Torres

Hola.Hongo fotografiado anteayer sobre unas agalla

16-09-2019 19:56

Nicolas VAN VOOREN Nicolas VAN VOOREN

Here is a asexual stage of a pyrenomycete, collect

16-09-2019 19:59

Castillo Joseba Castillo Joseba

Para confirmar IDDel pasado sabado sobre madera mu

16-09-2019 19:56

Castillo Joseba Castillo Joseba

Para confirmar IDDel pasado sabado sobre madera po

16-09-2019 21:28

Enrique Rubio Enrique Rubio

This Otidea grew at 1000 m in a forest with Corylu

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Pyrenopeziza ?
Yannick Mourgues, 17-06-2010 23:57
Yannick MourguesDear all.

Here is a small asco found on decorticated wood sp. in hight altitude (2000m), Pyrenopeziza-like specie I think.

Apo. from 400 to 600 um diameter, grey with a white margin, opening at first in slit.
Presence of brown septate hairs (wide of 2-3um) on the base.

Asci unitunicate, spores biseriate, 175-180x10-12 um, IKI- even with pre-treatment in KOH, with croziers.
Spores 13,3-14,5x3,7-4,4 um and often 1-septate.
Sous-hymenium textura intrica
Excipulum textura globulosa/subglobulosa, brown on excipulum-ectal and gradually brown to hyalin inward.

Have you got an idea ?

Yannick Mourgues
  • message #11995
Yannick Mourgues, 17-06-2010 23:58
Yannick Mourgues
Re:Pyrenopeziza ?
spores
  • message #11996
Yannick Mourgues, 17-06-2010 23:58
Yannick Mourgues
Re:Pyrenopeziza ?
coupe
  • message #11997
Yannick Mourgues, 17-06-2010 23:59
Yannick Mourgues
Re:Pyrenopeziza ?
textura excipulum ectal
  • message #11998
Nicolas VAN VOOREN, 18-06-2010 08:06
Nicolas VAN VOOREN
Re:Pyrenopeziza ?
Yannick,
les spores sont-elles déjà cloisonnées dans l'asque? Tu as identifié le bois ?
Hans-Otto Baral, 18-06-2010 08:20
Hans-Otto Baral
Re:Pyrenopeziza ?
Clearly a Pyrenopeziza. There exist some on woody substrate (incl. bark), also with inamyloid asci, but they are partly indeterminable. Important is to know whether the spore septa occur inside living asci. Perhaps you have still some living ones and can check them and make a photo? How large are the asci? I cannot believe that they are much over 100 µm ?!

Zotto
Yannick Mourgues, 18-06-2010 21:23
Yannick Mourgues
Re:Pyrenopeziza ?
Thank's a lot.
First, the wood has been identified : Sambucus.
Second, I remember that only a few spores were septate in asci. I'll try this evening to make picture of that. Asci are 175-180x10-12 um I'll make a picture of that too.
Yannick
Yannick Mourgues, 20-06-2010 15:15
Yannick Mourgues
Re:Pyrenopeziza ?
Dear Zotto.
Here is a picture of an ascus from rehydrated material. Spores are usually non-septate inside but sometimes they are 1-septate.
Asci are 60-70x6-10um ! You are right ! I haven't read the good line on my paper... Sorry.
Yannick
  • message #12041
Hans-Otto Baral, 20-06-2010 22:45
Hans-Otto Baral
Re:Pyrenopeziza ?
With Bernard's key there is only one lignicolous species (I wonder about that), Py. salicis (Feltg.) Nannf., on Salix and Sambucus, wit spores 12-15 x 2.5 µm. In Nannfeldt 1932 there is no mention of the iodine reaction, also not in Bernard's key. Maybe Höhnel says something about that.

Zotto
Yannick Mourgues, 21-06-2010 00:01
Yannick Mourgues
Re:Pyrenopeziza ?
Thank's Zotto.
Could you send me Bernard's key if it's possible ? I haven't got it.
I will try to find if Höhnel says something about this specie.

Yannick