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14-07-2020 12:27

Juuso Äikäs

These Orbilias I found growing on a fallen, decort

13-07-2020 12:08

Juuso Äikäs

Yesterday I found some Pulvinulas growing on clay-

14-07-2020 06:57

Stoykov Dimitar Stoykov Dimitar

Dear friends,I am looking for Cannon, P.F.  1999.

14-07-2020 09:23

Thomas Læssøe


13-07-2020 22:08

Guy Buddy

Howdy all,This rough-looking fruit is from dead st

13-07-2020 13:17

Blasco Rafael Blasco Rafael

Hola, a ver si me pueden ayudar con esta muestra d

06-07-2020 05:51

Yulia Lytvynenko

Dear friends.Looking for a copy of the following w

12-07-2020 19:23

Andgelo Mombert Andgelo Mombert

Bonsoir, Sur bois mort décortiqué, immergé dan

13-07-2020 13:57

Stefan Jakobsson

Here a 5 mm wide fungus growing on a decidious(?)

07-07-2020 13:34

Sergey Markov

I found this peziza sp. on loamy soil - on the gro

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On Betula leaves
Marja Pennanen, 20-05-2010 08:42
these are about 0,3-0,7 mm wide and seems to be specific about substrate. At that damp place there were other leaves, but not these on them.
  • message #11556
Marja Pennanen, 20-05-2010 08:45
Re:On Betula leaves
The spores are about 9-13x2-3. Asci about 50-65x6-8, IKI+ and narrow (1-3) papaphyses have swollen tips.
  • message #11557
Marja Pennanen, 20-05-2010 08:59
Re:On Betula leaves
One more photo of which I'm not very proud.
  • message #11558
Miguel Ángel Ribes, 20-05-2010 09:30
Miguel Ãngel Ribes
Re:On Betula leaves
It seems a Calycellina

Marja Pennanen, 20-05-2010 10:37
Re:On Betula leaves
Maybe Calycellina leucella...

Miguel Ángel Ribes, 20-05-2010 10:57
Miguel Ãngel Ribes
Re:On Betula leaves
I do not know, I only have this experience, with Calycellina albida, identified by Zotto:

Marja Pennanen, 20-05-2010 11:19
Re:On Betula leaves
Hello Miquel,

I think, that C. leucella will do.
Actually I saw even longer spores, when I had a smaller magnification. Just could'n find them with bigger. Also asci may be longer.

I found these last spring, too and couldn't determine them. So I'm glad to get a species for them. They seem to be quite common at the region, where I found them: at my home, when I was yonger. It is my favorite place for searching fungi :)

Hans-Otto Baral, 20-05-2010 12:52
Hans-Otto Baral
Re:On Betula leaves
Hi Marja & Miguel

I am not quite sure with this identification.Could you have a look on the exterior of the excipulum? Without that you can make mistakes between families!

I was dealing today also with a species on Betula leaves, which I presently compare with Pyrenopeziza betulicola. Enrique and several others made photos of the latter, but these look macroscopically different from mine which resembles more a Naevioideae. But they could fit to yours, though being more grey. I imagine that your find belongs to P. betulicola. The margin of your apos look a bit crenulate, maybe yours are also erumpent from beneath the epidermis. Microscypha monticola is perhaps the same species or a very close relative (on Salix leaves).

Here a photo by Ingo Wagner

  • message #11564
Marja Pennanen, 20-05-2010 13:11
Re:On Betula leaves
Hello Zotto,

and so happy, that I was ;) May be I'll now become even hapier :)

Here's a photo of the cells:
  • message #11565
Hans-Otto Baral, 20-05-2010 13:48
Hans-Otto Baral
Re:On Betula leaves
So it is a t. angularis. Calycellina also differs in having refractive vacuoles (VBs) in the paraphyses which yours apparently does not have.