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20-06-2024 16:07
Nicolas SuberbielleBonjour, J'ai trouvé cette espèce sur les feuil
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20-06-2024 09:40
![Michel Hairaud](/uploads/user_vgn/Hairaud-0001.jpg)
Bonjour, I can no longer reach Javier Etayo at
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19-06-2024 18:32
François BartholomeeusenOn female Alnus catkins I found very small fruit b
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16-03-2018 12:26
Garrido-Benavent IsaacDear all,I found this beautful pseudotheciate asco
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19-06-2024 17:52
![Bernard Declercq](/uploads/user_vgn/Declercq-0001.jpg)
Dear all, I am looking for the description and ac
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18-06-2024 14:07
![Thierry Blondelle](/uploads/user_vgn/-0211.jpg)
Bonjour,Récolte sur une brindille dans une tourbi
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16-06-2024 16:47
![Hardware Tony](/uploads/user_vgn/Tony-0001.jpg)
These apothecia directly growing on a resupinate,
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16-06-2024 14:36
Hello.An anamorph located in nature, on the surfac
Phaeohelotium fagineum ?
Thierry Blondelle,
04-06-2024 21:26
![Thierry Blondelle](/uploads/user_vgn/-0211.jpg)
Je vous soumets cette récolte sur faîne (cupules of Fagus) que j'ai déterminée comme étant Paeohelotium fagineum d'après la clé de Declercq (est-ce la dernier version pour les Hymenoscyphus ?)
J'ai tout de même quelques interrogations sur mon interprétation de la micro:
- Je distingue 3 couches succesives sous-hyméniales (une couche d'excipulum hymenial de type intricata, une couche intermédiaire de type porrecta, une couche d'excipulum ectal basale de type globulosa-angularis.
- Un OCI voisin de 2 plutôt que de 0-1
- des spores à 1-2 cellules. Est-ce un critère récurrent ?
Mes observations sont-elles suffisantes et confirment-elles l'espèce ?
Merci pour vos avis.
Salutations
Thierry
Hans-Otto Baral,
04-06-2024 23:14
![Hans-Otto Baral](/uploads/user_vgn/Baral-0001.jpg)
Re : Phaeohelotium fagineum ?
P. fagineum is a species with a short stout stipe. The living paraphyses do not contain VBs in your case which excludes a lot of Hymenoscyphi. Important would be to clarfy whether the spores are ejected when non-septate or when septate. If you find living mature asci you will see that. Also iodine reaction and croziers are required.
Thierry Blondelle,
05-06-2024 07:28
![Thierry Blondelle](/uploads/user_vgn/-0211.jpg)
Re : Phaeohelotium fagineum ?
Thanks Zotto for these new ways of research.
Thierry Blondelle,
05-06-2024 23:12
Hans-Otto Baral,
06-06-2024 08:50
![Hans-Otto Baral](/uploads/user_vgn/Baral-0001.jpg)
Re : Phaeohelotium fagineum ?
The apical ring looks Hymenoscyphus-like, but that type occurs also elsewhere. I see no living asci, we cannot be sure about the expulsion. And for croziers I am similarly uncertain, one needs the cel below, unruptured from the ascus.
My first idea was H. varicosporoides, but I remembered that species only with a short stalk. Now when looking in my folder there are several with long stalks (e.g. 18.II.2015, J. Balda). Also the original description refers to a long-stalked fungus. So I think this is a good option. The fungus has an interesting anamorph adapted to running or standing water.
Thierry Blondelle,
06-06-2024 13:52
![Thierry Blondelle](/uploads/user_vgn/-0211.jpg)
Re : Phaeohelotium fagineum ?
Thanks a lot. The fungus rised on beechnuts fallen to the edge of a little stream. This confirm it is a species of damp places.
I am going to try another micros. How to identify living asci ?
I am going to try another micros. How to identify living asci ?
Hans-Otto Baral,
06-06-2024 17:17
![Hans-Otto Baral](/uploads/user_vgn/Baral-0001.jpg)
Re : Phaeohelotium fagineum ?
Well, sorry, I wrote this 100x in this forum. Please go to my old homepage, the front page illustrates without words.