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Bernard CLESSE
Bonjour à toutes et tous,Pourriez-vous m'aider à
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Marc Detollenaere
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Lothar Krieglsteiner
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Bernard CLESSE
Pourriez-vous me confirmer ma détermination de ce
Yellow hairy on Betula leaves
Marja Pennanen,
13-09-2010 09:07
these are tiny, 0,1-0,2 mm wide.
There was something else on the leaves, too. I don't know what. Maybe I'll come back to it later.
Marja Pennanen,
13-09-2010 09:10
Re:Yellow hairy on Betula leaves
They remind Hamatocanthoscypha straminella, but does it grow on leaves?
I'll check this with a better microscope, but my estimates are spores 6x2 and asci 25x5.
I'm not sure which are hairs, but I suppose these are paraphyses.
Has someone experiences of this kind of species?
Marja
I'll check this with a better microscope, but my estimates are spores 6x2 and asci 25x5.
I'm not sure which are hairs, but I suppose these are paraphyses.
Has someone experiences of this kind of species?
Marja
Hans-Otto Baral,
13-09-2010 12:09
Re:Yellow hairy on Betula leaves
Could you supply us with a photo of the hairs? Important also to figure the spores. Are they guttulate? I thought it could be Calycellina araneoconcta, with 4-spored asci and spores about 15 x 3 µ.
Zotto
Zotto
Marja Pennanen,
13-09-2010 13:04
Re:Yellow hairy on Betula leaves
Ooh yes,
it was very immature fungi I studied home.
This has peculiar spores about 15-18x2-3. They are narrower at the other end and often bent on the other end, only very few, tiny droplets.
Asci 4-spored, 30-40x5-6.
The hairs reminded Hyaloscypha hairs and were 20-40x2-3 (think I saw one with 2 septas).
I'll attach photos here later at home, weather there is something to show ;)
I've got no papers with me, but once again I feel, that you made a right determination on wrong information :)
Marja.
it was very immature fungi I studied home.
This has peculiar spores about 15-18x2-3. They are narrower at the other end and often bent on the other end, only very few, tiny droplets.
Asci 4-spored, 30-40x5-6.
The hairs reminded Hyaloscypha hairs and were 20-40x2-3 (think I saw one with 2 septas).
I'll attach photos here later at home, weather there is something to show ;)
I've got no papers with me, but once again I feel, that you made a right determination on wrong information :)
Marja.
Hans-Otto Baral,
13-09-2010 13:20
Re:Yellow hairy on Betula leaves
Yeah, it's clearly araneoconcta. Hiope you find images on the DVD
Zotto
Zotto
Marja Pennanen,
13-09-2010 13:45
Re:Yellow hairy on Betula leaves
Hello,
found no information of the species on internet.
Is the species a new one or changed name or something?
Can I find the description in Ains "Revised..."?
I suppose it will be new to Finland, something like 15. for me this year.
Marja
found no information of the species on internet.
Is the species a new one or changed name or something?
Can I find the description in Ains "Revised..."?
I suppose it will be new to Finland, something like 15. for me this year.
Marja
Martin Bemmann,
13-09-2010 14:22
Re:Yellow hairy on Betula leaves
Hi Marja,
you did not find anything because of a typo it must read "araneocincta" search for this name on the Zotto's DVD, there is one document. IF considers it to be a synomym of Phialina lachnobrachya which is described on p. 95 of the "Revised".
Cheers
Martin
you did not find anything because of a typo it must read "araneocincta" search for this name on the Zotto's DVD, there is one document. IF considers it to be a synomym of Phialina lachnobrachya which is described on p. 95 of the "Revised".
Cheers
Martin
Marja Pennanen,
13-09-2010 15:23
Re:Yellow hairy on Betula leaves
Thanks,
I'll study this more home, but with that synonym there are a couple collections from Finland.
There seems to be P. lachnobrachyoides, too, which is 8-spored.
Marja
I'll study this more home, but with that synonym there are a couple collections from Finland.
There seems to be P. lachnobrachyoides, too, which is 8-spored.
Marja
Hans-Otto Baral,
13-09-2010 17:33
Re:Yellow hairy on Betula leaves
lachnobrachyoides is different. But lachnobrachya and araneocicnta are very close. The IF takes them as one species, but I had reason to separate them. Always on Betula I see yellow apos and on Acer etc. they are white. The pigment is in the VBs, as seen on your pic. Again a vital character, disappearing in the herbarium with the years. Microscopically the two are actually very much the same, but I wonder a DNA-analysis will bring up differences too.
And Raitviir and Seppo have lachnobrchya in Phialina.
Zotto
And Raitviir and Seppo have lachnobrchya in Phialina.
Zotto