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21-07-2024 10:13
![Thierry Blondelle](/uploads/user_vgn/-0211.jpg)
Bonjour,Récolte sur branchette de Castanea dans u
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21-07-2024 10:28
![Alan Rockefeller](/uploads/user_vgn/-0063.jpg)
Which Peziza did I find on horse dung in Humboldt
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19-07-2024 11:08
![Miguel Ãngel Ribes](/uploads/user_vgn/Ribes-0001.jpg)
Good morningThis Scutellinia from July 9 grew at 1
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21-07-2024 06:23
Masanori KutsunaDear all, Does anyone have these papers and send
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08-07-2024 23:34
Villalonga PacoSmall Scutellinia growing in garden soil (calcareo
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16-07-2024 18:32
![Andgelo Mombert](/uploads/user_vgn/Mombert-0001.jpg)
Bonsoir, Un discomycète sur Liochlaena lanceolat
Mollisia revincta ?
PASCAL DUBOC,
08-05-2022 19:29
colonie de disques (< 2 mm) gris à marge blanche et face externe brune feutrée à la base d'une vieille tige de Cirsium palustris
La réaction dans la Koh est aléatoire, rarement jaune le plus souvent neutre, cellules brunes jusqu'à la marge, réaction IKI bleue, spores souvent biggutulées d'en moyenne 7.6 x 2.1 microns
Vu le support herbacé j'arrive à Mollisia revincta.. merci pour vos avis
Hans-Otto Baral,
08-05-2022 20:50
![Hans-Otto Baral](/uploads/user_vgn/Baral-0001.jpg)
Re : Mollisia revincta ?
Posible. but for a sound ID one needs vital photos. You could add KOH to see if a transient yellow sap becomes visible. This works even macroscopically.
PASCAL DUBOC,
08-05-2022 21:11
Hans-Otto Baral,
08-05-2022 21:35
![Hans-Otto Baral](/uploads/user_vgn/Baral-0001.jpg)
Re : Mollisia revincta ?
o.k., it is the question whether a Pyrenopeziza or a Mollisia - I am not sure. Living paraphyses are necessary. M. revincta shows a yellow reaction, not very strong but distinct.
PASCAL DUBOC,
08-05-2022 21:46
Re : Mollisia revincta ?
sur l'image 2 la réaction jaune est visible
Hans-Otto Baral,
08-05-2022 21:57
![Hans-Otto Baral](/uploads/user_vgn/Baral-0001.jpg)
Re : Mollisia revincta ?
You mean your last microphoto? No yellow.
PASCAL DUBOC,
08-05-2022 22:01
Re : Mollisia revincta ?
Non la seconde du premier lot d'image
Hans-Otto Baral,
08-05-2022 22:06
![Hans-Otto Baral](/uploads/user_vgn/Baral-0001.jpg)
Re : Mollisia revincta ?
That seems yellow exudate, the KOH reaction is either inside the paraphyses or extruding homogeneously in the medium.
PASCAL DUBOC,
09-05-2022 08:57
Hans-Otto Baral,
09-05-2022 12:50
![Hans-Otto Baral](/uploads/user_vgn/Baral-0001.jpg)
Re : Mollisia revincta ?
It may be that the reaction in M. revincta is variable or a collective species. Anyway, in the dead state it is difficult to be sure about the VBs. usually one sees remnants of the long-cylindrical Vbs, then yours would be a Pyrenopeziza.
PASCAL DUBOC,
09-05-2022 13:17
Re : Mollisia revincta ?
Pardon qu'est-ce que Vbs ? et je ne comprend pas pourquoi tu parles "d'état mort".. les champignons sont vivants sur leur support, j'ai examiné les éléments dans l'eau ??
Hans-Otto Baral,
09-05-2022 17:11
![Hans-Otto Baral](/uploads/user_vgn/Baral-0001.jpg)
Re : Mollisia revincta ?
Sorry, I should explain from the beginning. The easiest would be if you read my paper on Vital Taxonomy (Mycotaxon 44, 1992: 333-390) or a brief version on my homepage:
A frequent mistake: If you put a dead anmial in water, it will not revive, unless it is a tardigrada or the like and was only dry, not dead.
VBs are refractove vacuolar bodies. Every Mollisia has them, every Pyrenopeziza not. It is even valuable at the familial level, as Pyrenopeziza is now accepted in the Ploettnerulaceae, Mollisia in Mollisiaceae. Undistorted VBs can only be seen in living paraphyses.
PASCAL DUBOC,
09-05-2022 17:24
Re : Mollisia revincta ?
ok je vais aller lire ton papier
mais je ne comprends pas : mes champignons ils sont bien vivants puisque je les ai ramenés sur leur support, ils sporulent, je ne les examine pas dans un liquide "nocif" au début..
merci
Hans-Otto Baral,
09-05-2022 18:10
![Hans-Otto Baral](/uploads/user_vgn/Baral-0001.jpg)
Re : Mollisia revincta ?
Perhaps you apply pressure to the cover slip? When the apos are still fresh, try a section with a razor blade, that is the softest method. But take care with the slip, there must be enough water so that the slip does not excert too much pressure.
PASCAL DUBOC,
09-05-2022 20:33
Re : Mollisia revincta ?
Ok je comprends.. J'ai lu ton article... pour visualiser sans tuer on peut aussi passer ça dans le bleu crésyl et donc sans écraser la préparation
je vais tenter
je vais tenter
PASCAL DUBOC,
14-05-2022 07:59
Hans-Otto Baral,
14-05-2022 08:35
![Hans-Otto Baral](/uploads/user_vgn/Baral-0001.jpg)
Re : Mollisia revincta ?
I am sorry, now, all elements are dead. Your apos are still fresh in the fridge?
Take only water and try a section, not a squash mount.
PASCAL DUBOC,
14-05-2022 16:23
Re : Mollisia revincta ?
Pas grave je pense que maintenant les aps sont effectivement trop âgées et mortes
merci
merci