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01-11-2025 09:14

Francis Maggi

Bonjour,Trouvé sur Xanthoria parietina à Valdebl

28-10-2025 19:33

Nicolas Suberbielle Nicolas Suberbielle

Bonjour à tous,Je voudrais votre avis sur cette r

31-10-2025 09:19

Lothar Krieglsteiner Lothar Krieglsteiner

Can somebody provide me with a file of:Rogerson CT

30-10-2025 03:53

Ethan Crenson

Hi all,  I would like an opinion on whether this

09-08-2025 13:13

Maria Plekkenpol Maria Plekkenpol

Hello,Yesterday I found these on burnt soil. Apoth

29-10-2025 19:02

Castillo Joseba Castillo Joseba

De la pasada semana en rama posiblemente de hayaPi

25-11-2016 13:54

Stephen Martin Mifsud Stephen Martin Mifsud

Hi, I found numerous seeds of Washingtonia robusta

28-10-2025 22:22

Bernard Declercq Bernard Declercq

Hello.I'm searching for the following paper:Punith

27-10-2025 19:51

Peter Welt Peter Welt

Who has this article? Doveri, F. 2007. Sporormiel

28-10-2025 15:37

Carl Farmer

I'd be grateful for any suggestions for this strik

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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?