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13-10-2025 19:05

Louis DENY

Bonjour forumSur tronc décortiqué de feuillu x,

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Peter Welt Peter Welt

Jamoni, P.G. 1998. Un nuovo discomicete coprofilo

11-10-2025 20:27

Marcel Heyligen Marcel Heyligen

Found on a barked branch, 14 mm in diameter, of Ro

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bonjour à tous, Je ne vois pas comment l'on peut

09-10-2025 22:14

S. Rebecca

We just had the Bavarian Mycology Conference in Au

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Hello all, This was found last weekend on a hardw

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David Chapados David Chapados

Hi, Could anyone help me with this Lophiostoma? 

04-10-2025 02:13

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Eutypa lata, Eutypa maura?
Riet van Oosten, 24-02-2018 19:51
Riet van OostenHello,

Found by a friend: february 2018.
On: dead branch of Sambucus nigra.
Asci: 8-spored.
Spore size: 5.4-6.6-7.2 x 1.4 µm (immature spores???)


Eutypa lata, Eutypa maura?


Kind regards,
Riet

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Jacques Fournier, 25-02-2018 10:58
Jacques Fournier
Re : Eutypa lata, Eutypa maura?
Hi Riet,
likely E. maura but this species is highly specific for Acer pseudoplatanus.
Just split the branch longitudinally across the stroma and if you see deeply immersed perithecia under a thick black superficial layer and surrounded by black extensions downwards like on the attached photo, you can safely recognize this fungus.
Host identification is most often critical to identify Diatrypaceae, otherwise it is often a headache.
Good luck,
Jacques
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Riet van Oosten, 25-02-2018 12:06
Riet van Oosten
Re : Eutypa lata, Eutypa maura?
Hi Jacques,

Thank you very much for your help and advice.
I will give it a try!

Greetings, Riet
Riet van Oosten, 25-02-2018 15:54
Riet van Oosten
Re : Eutypa lata, Eutypa maura?
Dear Jacques,

I can see "deeply immersed perithecia under a thick black superficial layer" ("and surrounded by black extensions downwards").
Are the black extensions on the photo's also correct for Eutypa maura?
The third photo I just received from the owner of the material.


Riet




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Jacques Fournier, 25-02-2018 16:41
Jacques Fournier
Re : Eutypa lata, Eutypa maura?
good, what you have here is the signature of this species
Jacques
Riet van Oosten, 25-02-2018 17:36
Riet van Oosten
Re : Eutypa lata, Eutypa maura?
Glad to hear that Jacques!
Merci beaucoup!
Riet