05-02-2026 15:07
Vasileios Kaounas
Found on a fallen needle of Pinus halepensis, diam
05-02-2026 06:43
Stefan BlaserHello everybody, Any help on this one would be mu
18-08-2025 15:07
Lothar Krieglsteiner
.. 20.7.25, in subarctic habital. The liverwort i
02-02-2026 21:46
Margot en Geert VullingsOn a barkless poplar branch, we found hairy discs
02-02-2026 14:55
Andgelo Mombert
Bonjour,Sur thalle de Lobaria pulmonaria.Conidiome
02-02-2026 14:33
Andgelo Mombert
Bonjour,Sur le thalle de Peltigera praetextata, ne
31-01-2026 10:22
Michel Hairaud
Bonjour, Cette hypocreale parasite en nombre les
02-02-2026 09:29
Bernard CLESSE
Bonjour à toutes et tous,Pour cette récolte de 2
01-02-2026 19:29
Nicolas Suberbielle
Bonjour, Marie-Rose D'Angelo (Société Mycologiq
Discos on Betula bark
Marja Pennanen,
02-11-2010 10:23
I found these tiny discos on the Betula pendula, that's fallen down on my own yard a couple of years ago. I've kept it untouched to study, what comes up and much do ;)
These grow on the bark and are up to 0,5 mm wide:
Marja Pennanen,
02-11-2010 10:28
Re:Discos on Betula bark
I've now got only the Old Russian without a micrometer, but myxomycetes spores give some estimates.
The spores are about 8-14x2-3 in size. They can contain some big, but faint droblets and some are with one septum.
The asci are about 50-70x6-8, propably IKI- and few paraphyses about 2 micrometers wide.
Sorry about the photo quality:Marja
The spores are about 8-14x2-3 in size. They can contain some big, but faint droblets and some are with one septum.
The asci are about 50-70x6-8, propably IKI- and few paraphyses about 2 micrometers wide.
Sorry about the photo quality:Marja
Hans-Otto Baral,
02-11-2010 11:27
Re:Discos on Betula bark
Hi Marja
I can't tell. Depends upon the excipulum, could you photograph it in a squash mount?
Zotto
I can't tell. Depends upon the excipulum, could you photograph it in a squash mount?
Zotto
Marja Pennanen,
02-11-2010 11:54
Re:Discos on Betula bark
Dear Otto,
Maybe I could, but would it help concidering the poor quality...
Marja
Maybe I could, but would it help concidering the poor quality...
Marja
Hans-Otto Baral,
02-11-2010 12:10
Re:Discos on Betula bark
o.k., thanks, hyaline and small celled angularis. A Hyaloscyphacee perhaps. I thought about a Calycellina from spore shape. Are there living paraphyses, and do they contain VBs?
I fera this is quite a puzzle. Something around Parorbiliposis perhaps-.
Zotto
I fera this is quite a puzzle. Something around Parorbiliposis perhaps-.
Zotto
Marja Pennanen,
02-11-2010 12:23
Re:Discos on Betula bark
Ooh, yes, there were some VB:s and the paraphyses were a little bit longer than the asci.
I'm not very happy to present this photo ;)
Marja
I'm not very happy to present this photo ;)
Marja
Hans-Otto Baral,
02-11-2010 12:31
Re:Discos on Betula bark
But it helps at least that I believe in their presence. Uff.. Anyhow, no idea.
Calyellina in a wide sense could still be possible.
Zotto
Calyellina in a wide sense could still be possible.
Zotto
Marja Pennanen,
02-11-2010 12:40
Re:Discos on Betula bark
Thank you, anyway you tried :)
I'm somehow used to not getting all of these my treasures determined :(
And now the stupid question ;) What are the other genuses, that a wide sence of Calycellina includes?
Marja
I'm somehow used to not getting all of these my treasures determined :(
And now the stupid question ;) What are the other genuses, that a wide sence of Calycellina includes?
Marja
Hans-Otto Baral,
02-11-2010 19:13
Re:Discos on Betula bark
Phialina would be one such genus, but that has short or long pointed hairs, and I presume yours doesn't have. Parorbiliopsis I mentioned, but that is a waste basket genus, which I refer from the type to Hyaloscypha, though without hairs. That has no VBs in the paraphyses. I fear you have here something about which nobody knows, not to speak of the literature which is often so bad.
I can only recommennd to collect this again, look for variation, and especially, a careful diagnosis. F.ex., to be sure whether the IKI-reaction is negative.
Zotto
I can only recommennd to collect this again, look for variation, and especially, a careful diagnosis. F.ex., to be sure whether the IKI-reaction is negative.
Zotto
Marja Pennanen,
03-11-2010 13:56
Re:Discos on Betula bark
Thank you :)
I saw no hairs. I should check this with a better microscope to see the IKI-reaction.
Maybe next autumn or maybe not ;)
Marja
I saw no hairs. I should check this with a better microscope to see the IKI-reaction.
Maybe next autumn or maybe not ;)
Marja