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16-05-2025 20:59

Jean-Paul Priou Jean-Paul Priou

Bonsoir à tous, un ami normand vient de me faire

16-05-2025 05:47

Francois Guay Francois Guay

I found this super tiny hyaline asco on fir needle

11-05-2025 10:35

ruiz Jose

Hola, en excremento de jabali, tamaño de unos 2 m

16-05-2025 13:12

Castillo Joseba Castillo Joseba

Me mandan el material de Galicia (España),  reco

14-05-2025 15:08

Gernot Friebes

Hi,I'd appreciate your help with this Lachnum coll

16-05-2025 07:36

Zhuo Lan

I am a Ph.D. candidate in fungal taxonomy at Capit

14-05-2025 10:57

Nicolas Suberbielle Nicolas Suberbielle

Bonjour,Encore une trouvaille de Marie-Rose D'Ange

13-05-2025 12:32

Gernot Friebes

Hi,I found this one on a Picea abies branch. It lo

08-07-2023 19:24

Juuso Äikäs

These Mollisia fruitbodies were growing on a twig

12-05-2025 18:25

Thomas Flammer

Substrate rabbitSpores: 12-13 µm x 6-7 µmParaph

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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
  • message #47102
  • message #47102
  • message #47102
  • message #47102
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