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13-12-2019 20:42

Götz Palfner Götz Palfner

Bonjour tous,Sorry, but as my French is crap, I wi

14-12-2019 10:09

Marc Detollenaere Marc Detollenaere

Dear forum,   On a decorticated trunk of Populu

11-12-2019 22:21


Bonsoir à toutes et tous,Pourriez-vous me confirm

11-12-2019 23:29

Juuso Äikäs

I found these in a Picea abies dominated forest in

08-12-2019 11:01

Gilbert MOYNE

Bonjour, Un petit champignon que m'a remis Andgel

13-12-2019 16:20

Chris Yeates Chris Yeates

Bonjour tous this is an area I feel rather ignora

12-12-2019 23:42

Maren Kamke Maren Kamke

Hello together, can someone provide me with this

12-12-2019 18:36

Roland Labbé

Bonjours ! Voici un Trichoderma (Hypocrea) inconn

07-12-2019 22:22

Rubén Martínez-Gil Rubén Martínez-Gil

Hola a todos. Subo unas fotos de un asco que hemo

11-12-2019 23:25

Ethan Crenson

Hello all,This was found by a friend in New York C

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Pyreno on Fagus leaves
Enrique Rubio, 21-04-2015 18:18
Enrique Rubio

Hi to everybody

This enigmatic pyreno on Fagus sylvatica old leaves at the sea level (I never seen it at the montaneous level where Fagus is very common in my country) forms blackish, scattered conical, ostiolate perithecia 0.3-0.5 mm in diam. on bleached patches with irregular margins at both sides of the leaf.

The globose to pyriform perithecium is covered by a clypeate structure with an epidermoid texture. Asci narrowly fusiform up to 175 x 4 with a n small refringent apical apparatus only well visible in IKI (IKI negative) or cotton blue. Scolescospores filiform, hyaline, spirally disposed inside the asci, for exemple 150 x 1.

I don't know a good genus for my fungus. Can you help me?

Thanks in advance

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Alain GARDIENNET, 21-04-2015 19:26
Re : Pyreno on Fagus leaves

Hi Enrique,

 Somewhere in Diaporthales... Perhaps around Linospora ?

Good luck !


Enrique Rubio, 21-04-2015 19:34
Enrique Rubio
Re : Pyreno on Fagus leaves

Hi Alain

I have considered Linospora but in this genus  the ostiole is lateral and no central (as mine) and the peridium is said to be built by a textura prismatica not epidermoidea.

Do you think theses asci are typical for Diaporthales?

Thanks a lot, Alain

Alain GARDIENNET, 21-04-2015 22:14
Re : Pyreno on Fagus leaves

A species from Diaporthales ? I don't know.  even if textura epidermoidea, apical apparatus, habit are ok, It was just an idea to open a talk.

It's unknwon for me.



Enrique Rubio, 22-04-2015 12:08
Enrique Rubio
Re : Pyreno on Fagus leaves

Thanks Alain

It is curious all the leaves of these Fagus in a Botanical Garden are 'infected' by this enigmatic fungus that I never seen at the montaneous Fagus forest...