23-12-2024 12:10
Bernard CLESSE
Bonjour à toutes et tous,Pourriez-vous m'aider à
21-12-2024 12:45
Marc Detollenaere
Dear Forum,On naked wood of Fagus, I found some ha
22-12-2024 10:19
Simon Gurtner
Hello,can anyone help me identify this small ascom
22-12-2024 10:53
Bernard CLESSE
Pourriez-vous me confirmer ma détermination de ce
20-12-2024 17:32
Louis DENYBonsoir forumTrouvé à Belfort, 400 m altitude, s
17-02-2013 08:38
Alain GARDIENNET
Bonjour, J'ai trouvé ces acervules sur feuille d
21-12-2024 09:08
Castillo Joseba
Me mandan el material seco de Galicia, recolecta
Pyrenopeziza ?
Yannick Mourgues,
17-06-2010 23:57
Dear 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
Yannick Mourgues,
17-06-2010 23:58
Re:Pyrenopeziza ?
spores
Yannick Mourgues,
17-06-2010 23:58
Re:Pyrenopeziza ?
coupe
Yannick Mourgues,
17-06-2010 23:59
Re:Pyrenopeziza ?
textura excipulum ectal
Nicolas VAN VOOREN,
18-06-2010 08:06
Re:Pyrenopeziza ?
Yannick,
les spores sont-elles déjà cloisonnées dans l'asque? Tu as identifié le bois ?
les spores sont-elles déjà cloisonnées dans l'asque? Tu as identifié le bois ?
Hans-Otto Baral,
18-06-2010 08:20
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
Zotto
Yannick Mourgues,
18-06-2010 21:23
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
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
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
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
Hans-Otto Baral,
20-06-2010 22:45
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
Zotto
Yannick Mourgues,
21-06-2010 00:01
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
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