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14-05-2026 05:36

Lachnum subvirgineum (?)
Ethan Crenson

Hi all,  I haven't paid much attention to Lachnu

11-05-2026 12:32

Hélotiale à paraphyses à exsudat brun jaunâtre
Bernard CLESSE Bernard CLESSE

Pourriez-vous m'aider à identifier cette héloti

13-05-2026 15:26

Incrucipulum ?
François Freléchoux François Freléchoux

Bonjour,Voici une récolte faite il y a quelques j

12-05-2026 15:41

Pezizomycetes of Europe: help us to improve their knowledge
Nicolas VAN VOOREN Nicolas VAN VOOREN

Dear Ascolovers, especially interested in Pezizale

13-05-2026 12:05

Scutellinia crinita ?
Thierry Blondelle Thierry Blondelle

Bonjour à tous,J'aimerais avoir confirmation de c

10-05-2026 23:17

Scleromitrula (?) from decaying leaves of Fagus/Acer
Andreas Gminder Andreas Gminder

Hello,today we found in a moist steep decidous for

28-04-2026 20:07

Marthamycetales? - from Portugal
Lothar Krieglsteiner Lothar Krieglsteiner

... on twig in the air at standing Ceratonia siliq

27-04-2026 20:52

Mollisia or related genus from Portugal - with quite peculiar character
Lothar Krieglsteiner Lothar Krieglsteiner

Found on hanging tiwg of Olea europaea in dried-ou

11-05-2026 20:22

Orbilia from Portugal
Lothar Krieglsteiner Lothar Krieglsteiner

on attached twig of standing Ficus caricaquite uns

11-05-2026 13:22

Pirottaea sp
Sylvie Le Goff

BonjourPuis avoir votre avis sur cet ascome, je vo

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Diatrypaceae
Stefan Blaser, 11-11-2019 15:00
Hello everybody,

I have another collection where I was not able to find a good match so far.
Maybe I can get some ideas here.


Ecology: lying branch of Fagus.


Macro:
Stromata 2-9 mm long, 1.5-2.5 mm broad and about 2 mm high, erupting from decorticated wood, with a dark brown to black surface. Ostiolar necks up to 0.9 mm long and 0.2 mm diameter, cruciform. Perithecia embedded in whitish tissue, about 0.4-0.6 mm in diameter.


Micro:
Asci stalked, Melzer+, with a spore bearing part of 26-33 x 6.5-7 µm. Spores allantoid, smooth, aseptate, brownish, with greenish oildrops, 7.5-9(-10) x 2.0-2.4 µm.


Thanks a lot for any contributions!


Best wishes,


Stefan


 


 

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Alain GARDIENNET, 11-11-2019 15:33
Alain GARDIENNET
Re : Diatrypaceae
Hi Stefan,

Please, compare to Eutypella leprosa.


Alain

Stefan Blaser, 11-11-2019 16:09
Re : Diatrypaceae
Hi Alain,

Thank you for the suggestion!

With my spore measurements (too small) I did not arrive at this species.

Maybe I repeat the measurement trying some other (more mature?) Perithecia.

Are the ostiolar necks that long in E. leprosa? Or just very variable?

Otherwise, the macroscopic description in "Rappaz" would fit quite well.

Stefan
Jacques Fournier, 19-11-2019 18:35
Jacques Fournier
Re : Diatrypaceae
Hi Stefan,

I also came across this fungus, also on rotten wood of Fagus, and I know a collection from Czech Republic.

Its stromata erumpent from rotten decorticated wood and its long ostioles are distinctive.

Likely an Eutypella but as you say not matching well a known species. It might be an undescribed species but it may also have been described in another genus.

If you have the opportunity, it would be interesting to isolate and to sequence it.

Good luck,

Jacques
Stefan Blaser, 20-11-2019 12:48
Re : Diatrypaceae
Hi Jacques,

Thanks a lot for your informations.

I will try to isolate and sequence it.

Stefan