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27-03-2024 22:53

Charles Aron Charles Aron

Hi All,Recently I came across these minute, setose

26-03-2024 17:14

Juuso Äikäs

These little black ascos were growing on a dead, d

25-03-2024 13:41

B Shelbourne B Shelbourne

• Hyaloscyphaceae (no VBs), Hyaloscypha: Macro a

25-03-2024 21:27

Riet van Oosten Riet van Oosten

Hello, Found by Laurens van der Linde, March 2024

26-03-2024 14:37

DAVID MARCOS DAVID MARCOS

Spores (telles qu'elles apparaissent à l'intérie

24-03-2024 08:27

Thierry Blondelle Thierry Blondelle

HiOn Hedera helix fallen branchEcological habitat:

26-03-2024 11:06

michel bertrand

Bonjour, Malgré de nombreuses recherches, je n'a

25-03-2024 14:08

Ursula Kozik

Bonjour et bonne journée, On m'a envoyé une tro

25-03-2024 03:56

B Shelbourne B Shelbourne

• Scuttelinia: Macro and habitat.• S. scutella

25-03-2024 20:21

DAVID MARCOS DAVID MARCOS

Bonjour, je m'appelle David et je débute dans l'i

« < 1 2 3 4 5 > »
On Betula leaves
Marja Pennanen, 20-05-2010 08:42
Hello,
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

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

Marja
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:

http://www.micobotanicajaen.com/Revista/Articulos/MARibesR/Aportaciones011/Calycellina%20albida%20011108%2098.pdf

Miguel,
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 :)

Marja
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

Zotto
  • 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.

Zotto