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Hyaloscyphaceae blanc
François Valade, 13-05-2008 22:28
François ValadeBonjour
Sur la face infère d'une souche massive (chêne je suppose), il y avait en compagnie d'une Mollisia un minuscule ascomycète blanc cilié, diamètre moins d'1 mm, détecté chez loi à la bino dont les poils sont remarquables par leur extrémité.
Asques à paroi épaisse, courts, environ 20-25x4µ, IKI+
la chair me semble textura prismatica.
spores elliptiques, 6-7x1,5µ, non symétriques, ciborioides.
paraphyses banales, 2µ de large.
le problème est que je ne sais pas dans quel genre chercher? Qui aurait une piste. merci
François

Ubersetzung für Zotto
Facing the ground on a massive oak stump, with a Mollisia sp., there was a tiny white hairy ascomycete, less than 1 mm, detected under the lens at home with noteworthy hairs tip.ThciTh à Thick-walled, short asci, about 20-25x4µ, IKI+, flesh textura prismatica
elliptic spores , 6-7x1,5µ, non symétric, ciborioid.
banl paraphysis , 2µ wide.
I do not know what genus it can be? Any idea. TIA
  • message #4681
François Valade, 13-05-2008 22:28
François Valade
Re:Hyaloscyphaceae blanc
suite
  • message #4682
François Valade, 13-05-2008 22:28
François Valade
Re:Hyaloscyphaceae blanc
fin de la micro.
  • message #4683
Hans-Otto Baral, 13-05-2008 22:40
Hans-Otto Baral
Re:Hyaloscyphaceae blanc
Hi Francois

Clearly a Hyaloscypha. with strongly tapering short hairs. H. daedaleae seems excluded by spore shape. Maybe H. fuckelii? Determination of Hyaloscypha needs to know the croziers. Do you have Huhtinen's monograph?

Amitiés
Zotto
François Valade, 13-05-2008 22:43
François Valade
Re:Hyaloscyphaceae blanc
Yes I do, but the genera key is somewhat a little bit confused. I shall look in this direction, the tiny size made me think it cannot be a Hyaloscypha.
I cannot see any croziers, but it does not mean there weren't.
I shall examine again the specimens.
Merci Zotto
Roland Labbé, 13-05-2008 22:49
Re:Hyaloscyphaceae blanc
Zotto, can I have from you our else the monograph on Hyaloscypha ?
Thank you Roland
Hans-Otto Baral, 13-05-2008 22:53
Hans-Otto Baral
Re:Hyaloscyphaceae blanc
Hyaloscypha is rarely over 1 mm diam, but sometimes only 0.3 mm.

The monograph I have only as hardcopy. Sorry, I do not know whether a scan exists. But there was recently the possibility to obtain it, wasn't it Andreas Gminder?

Zotto
Stip Helleman, 15-05-2008 07:35
Stip Helleman
Re:Hyaloscyphaceae blanc
Salut François,
I would also consider H. fuckelii var. fuckelii, croziers seem to be present in picture 2 & 3 at young asci, also you can check free mature asci in CR croziers show mostly 2 red points in the ascusbase.

cheers Stip
François Valade, 15-05-2008 21:31
François Valade
Re:Hyaloscyphaceae blanc
Hi Stip
Welcome here on Mycofrance
Yes you are right, I have seen croziers with a better preparation. So H. fuckelii var. fuckelii fits well.
Thank you all for your help.
François


PS: (Stip a un magnifique site avec plein d'ascomycètes des Pays-Bas http://www.helotiales.nl/. Allez lui rendre visite