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Disco on Fraxinus excelsior
Per Marstad,
21-02-2019 11:29
I 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.
Martin Bemmann,
21-02-2019 11:35
Re : Disco on Fraxinus excelsior
Looks like Encoelia fascicularis.
Regards
Martin
Per Marstad,
21-02-2019 11:39
Re : Disco on Fraxinus excelsior
Thank you.
Per.
Per.
Hans-Otto Baral,
21-02-2019 11:40
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.
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
Re : Disco on Fraxinus excelsior
As you say, Zotto, we have one collection of fascicularis on Sorbus aucuparia too (1600 m).
Enrique
Enrique
Hans-Otto Baral,
21-02-2019 11:54
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
Best wishes,
Gernot
Hans-Otto Baral,
21-02-2019 12:22
Re : Disco on Fraxinus excelsior
Hi Gernot
if you have docsu please send me
Zotto
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
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
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.
Is the determination sure, Sclerencoelia fraxinicola, because it is growing on Fraxinus?
Per.
Hans-Otto Baral,
21-02-2019 15:50
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.
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
Re : Disco on Fraxinus excelsior
I seems to grow on a corticiacea, doesn't it?
Hans-Otto Baral,
21-02-2019 17:15
Re : Disco on Fraxinus excelsior
maybe, but I also see small ostioles
Per Marstad,
21-02-2019 17:18
Re : Disco on Fraxinus excelsior
Yes. We collected it on the 20. of February. It has been a warm period the last weeks.
Per.
Per.
Martin Bemmann,
21-02-2019 19:11
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
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?
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?