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08-12-2019 11:01

Gilbert MOYNE

Bonjour, Un petit champignon que m'a remis Andgel

07-12-2019 22:22

Rubén Martínez-Gil Rubén Martínez-Gil

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

07-12-2019 18:45

Laurens van der Linde Laurens van der Linde

Hallo i found the P atrovinosa with a slime specie

06-12-2019 19:49

Edvin Johannesen Edvin Johannesen

Hi! Tiny, black, oblong stromata with pure white

27-11-2019 16:54

Rasmus Riis-Hansen Rasmus Riis-Hansen

Hi,I hope you can help med with this disc found a

05-12-2019 09:06

Valencia Lopez Francisco Javier

Hola amigosEstoy buscando este trabajo de la Errot

05-12-2019 19:35

Ibai Olariaga Ibarguren

Dear colleagues, I was wondering if anyone could

19-11-2019 18:05

Lothar Krieglsteiner Lothar Krieglsteiner

... under a twig of deciduous tree (likely Quercus

29-06-2011 22:52

Luc Bailly Luc Bailly

Encore trois ascos de la réserve naturelle domani

04-12-2019 13:01

Mirek Gryc

Hello everyoneI inform you in advance that this is

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Disco on Fraxinus excelsior
Per Marstad, 21-02-2019 11:29
Per MarstadI have found this on Fraxinus excelsior, in Norway.
Diameter 3 - 5 mm, dark hymenium, cellular outside.
Asci 80-85 x 7-8 my.
Spores 13-15 x 2,5-3 my. 
It is nice with a name.
Per.
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Martin Bemmann, 21-02-2019 11:35
Martin Bemmann
Re : Disco on Fraxinus excelsior
Looks like Encoelia fascicularis.

Regards

Martin
Per Marstad, 21-02-2019 11:39
Per Marstad
Re : Disco on Fraxinus excelsior
Thank you. 
Per.
Hans-Otto Baral, 21-02-2019 11:40
Hans-Otto Baral
Re : Disco on Fraxinus excelsior
Yes, and more upto date Sclerencoelia fraxinicola (S. fascicularis is on Populus).

Could you please tell me the region in Norway? The white powder on the margin comes from crystals.
Enrique Rubio, 21-02-2019 11:44
Enrique Rubio
Re : Disco on Fraxinus excelsior
As you say, Zotto, we have one collection of fascicularis on Sorbus aucuparia too (1600 m).
Enrique
Hans-Otto Baral, 21-02-2019 11:54
Hans-Otto Baral
Re : Disco on Fraxinus excelsior
There exist also fantastic samples on Salix which also show some genetic distance to Populus samples. For Sorbus I do not know of a sequence.
Gernot Friebes, 21-02-2019 12:10
Re : Disco on Fraxinus excelsior
We also have some samples on Salix collected in Styria, in case they are of interest for further studies.

Best wishes,
Gernot
Hans-Otto Baral, 21-02-2019 12:22
Hans-Otto Baral
Re : Disco on Fraxinus excelsior
Hi Gernot
if you have docsu please send me
Zotto
Gernot Friebes, 21-02-2019 13:11
Re : Disco on Fraxinus excelsior
Hi, Zotto,

I will check later regarding dokus and let you know. I do have dried material which I could send somewhere for sequencing etc.

Best wishes,
Gernot
Per Marstad, 21-02-2019 14:02
Per Marstad
Re : Disco on Fraxinus excelsior
It was found on the island Hvasser, close to Tønsberg, 100 km south of Oslo, in a wet forest with Alnus glutinosa, Fraxinus excelsior and others.
Is the determination sure, Sclerencoelia fraxinicola, because it is growing on Fraxinus?
Per.
Hans-Otto Baral, 21-02-2019 15:50
Hans-Otto Baral
Re : Disco on Fraxinus excelsior
Thanks, and did you collect it the last days?

I must say that your micros are rather poor, but nevertheless there is no doubt, the macro looks just as the holotype which is here from my village.

Martin Bemmann, 21-02-2019 16:05
Martin Bemmann
Re : Disco on Fraxinus excelsior
I seems to grow on a corticiacea, doesn't it?
Hans-Otto Baral, 21-02-2019 17:15
Hans-Otto Baral
Re : Disco on Fraxinus excelsior
maybe, but I also see small ostioles
Per Marstad, 21-02-2019 17:18
Per Marstad
Re : Disco on Fraxinus excelsior
Yes. We collected it on the 20. of February. It has been a warm period the last weeks.
Per.
Martin Bemmann, 21-02-2019 19:11
Martin Bemmann
Re : Disco on Fraxinus excelsior
Or is this a (pseudo-)sclerotial stroma, and these "ostioles" are primordia of the Sclerencoelia. I do not see this on the holotype of fraxinicola (in the article), but in the pictures of S. fascicularis.

Martin
Hans-Otto Baral, 21-02-2019 20:21
Hans-Otto Baral
Re : Disco on Fraxinus excelsior
The two species do not differ in the sclerotial strutures. In dhe description this is written:

Sclerotia-like aggregations developing within or beneath
the bark, discoid-shaped or with one side elongated, in association
of flat, reticulate dark brown strands >10 mm long,
0.4–0.8 mm wide, 0.25–0.3 mm thick, composed of branched
blackish brown-walled hyphae.

I cannot imagine what these small pores are. We do not know a pycnidial anamorph of Sclerencoelia, and primordia I would exclude. Perhaps the miccroscope would clarify this?