25-04-2025 22:48
Gustaf Fredell
Hello,I hope everything is going well. I couple mo
24-04-2025 21:35
Thorben HülsewigHi there,last week i could found this asco on an S
25-04-2025 17:24
Stefan BlaserHi everybody, This collection was collected by J
25-04-2025 09:33
Josep Torres
Ascomata shaped like deformed black grains, measur
24-04-2025 21:53
Lothar Krieglsteiner
... 15.7.24 in the Alps. There were many asci with
23-04-2025 20:16
Miguel Ángel Ribes
Good afternoon Looking for Octospores / Lamprospo
24-04-2025 15:03
Henri KoskinenHello, I collected this Lasiobolus 22.04. near Hel
23-04-2025 19:58
Francois Guay
I found this interesting Orbilia sp. one year ago
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