Hi Ismail,

Really impossible to give a name.

There are many and many pyrenomycetes growing on Populus. And there are several fungi looking like this one.

We guess a Pleosporales (or else !) with brown ascospores (asci are visible), but really impossible to go further without microscopical details.

Alain

Hi Ismael,

this should be a Rosellinia. Already as I saw only the macrofoto I was thinking of Rosellinia but I hesitated because of the reasons given by Alain.

But now, as I see the dark spores with germ-pore I have no doubt any more.

The spores seem to have an appendix at the end - in former times those forms were determined as R. aquila. I know, that has become more complicated today ....

Regards from Lothar

hi lothar

I suppose I'll write Rosellinia aquila

best regards

ismail

Hi Ismail,

Now it's less difficult...

Yes, a Rosellinia species.

You can go to the website pyrenomycete.free.fr to use the dichotomous key.

http://pyrenomycetes.free.fr/rosellinia/keydir/dichotomickey.htm

Alain

Dear Alain

http://pyrenomycetes.free.fr/rosellinia/keydir/dichotomickey.htm

I looked at this address
three species are close together
but when I look in detail, I decided that Rosellinia aquila

The spores have an appendix at the end