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30-04-2025 01:29

David Chapados David Chapados

Hi, I found Dactylellina candida/candidum, recent

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Louis DENY

Bonjour forumVosges du sud, ballon d'Alsace altitu

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Substrate: Angelica sylvesrisSpore mass: 8.4 - 11.

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Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Dear mycologists,could someone give me an advice a

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Robin Pétermann Robin Pétermann

Bonjour, Voici une probable Mollisia, genre que j

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Dragiša Savic

Hello everyone,the lichen is Candelariella aurella

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Martin Bemmann Martin Bemmann

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Lennert Gees

Greetings!For my master's dissertation I work on c

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Jacques Fournier Jacques Fournier

J'ai le regret d'informer les membres du forum qui

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Francois Guay Francois Guay

I found these small Arachnopeziza sp. growing on d

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Didymosphaeriaceae (?) on Ulmus branch
Enrique Rubio, 08-02-2017 20:38
Enrique RubioHi again
I have found on fallen branches broken by the wind, these small (500-870 microns high, up to 100 microns broad), pyriform, subepidermial or inmersed on the wood, somewhat glabrous pseudothecia, solitary or arranged in fused groups, on Ulmus minor. The fungus seems to be xerophilous, because only the fall of the branches allowed me to see it.
The asci I think are not unitunicate, although that is not easy for me, with a variable numeber of ascospores (often 8). Pseudoparaphyses narrowly trabeculate. Ascospores yellowish, brownish, brownish-black, uniseptate (secondarily septate at maturity), heteromorphic, with clearly longitudinaly striate walls, sometimes sub-reticulate. Pseudothecial inner walls with hyaline prismatic or roundish cells.
I think could be near to Didymosphaeria, because the pseudothecia are not arranged in Valsoid-type as in the Valsariales.
Have you some idea for me?
Many thanks again
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  • message #47102
  • message #47102
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Paul LEROY, 08-02-2017 22:41
Re : Didymosphaeriaceae (?) on Ulmus branch
Salut Enrique,

A moins d'une révision plus récente que la documentation en ma possession, ce spécimen semble convenir pour Didymosphaeria massarioides Saccardo & Bruneau.
Paul
Enrique Rubio, 09-02-2017 00:44
Enrique Rubio
Re : Didymosphaeriaceae (?) on Ulmus branch
Bonsoir Paul
Je pense que tu as la raison, et qui mon champi semble convenir avec ce nom
Merci beaucoup par ton amicale aide