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11-02-2025 13:06

Blasco Rafael Blasco Rafael

Hola, alguna idea de que puede ser esta muestra ??

11-02-2025 09:41

Blasco Rafael Blasco Rafael

Hola, supongo que tambien sera Trichopeziza perrot

23-02-2022 18:55

William de Jong

Hi everyone,I found an ascomycete on a twig of Rob

22-09-2009 09:47

Alain GARDIENNET Alain GARDIENNET

Bonjour, Curieuse récolte que ce Pleospora imme

10-02-2025 16:40

Karen Poulsen

Hello, I found these fungi on dead branches of Fa

09-02-2025 22:51

Yanick BOULANGER

BonsoirEst-ce que quelqu'un peut me dire s'il s'ag

01-02-2025 20:32

Andreas Gminder Andreas Gminder

Hello,today my girlfriend Sylvie found a single ap

08-02-2025 18:48

Yanick BOULANGER

CistellaSur boisTrès petites apothécies (0.1 –

06-02-2025 18:11

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello, while digging in my fungarium, I found an

07-02-2025 22:28

Yanick BOULANGER

BonsoirPetit pyrénomycètes d'environ 1 mm sur bo

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Leptosphaeria on grass
Gernot Friebes, 19-07-2010 15:50
Hi again,

here I have the second collection and with this find I did not come to any result at all.

It grew on grass lying in a little stream together with Mollisia hydrophila. The ascomata are immersed, the spores are 28-32 x 4-5.5 µm, 6-celled with the third cell slightly swallen, the ostiolum is filled with +- angular cells and not with periphyses and the peridium of big, brown cells. Within some ascomata the lower half of the peridium was much lighter than the upper half.

I would be thankful for any help!

Best wishes,


Gernot


ascomata:
  • message #12388
Gernot Friebes, 19-07-2010 15:51
Re:Leptosphaeria on grass
micros (scale=10 µm):

  • message #12389
Gernot Friebes, 19-07-2010 15:51
Re:Leptosphaeria on grass
sections (scale=10 µm):

  • message #12390
Gernot Friebes, 19-07-2010 15:51
Re:Leptosphaeria on grass
sections (scale=10 µm):
  • message #12391
Gernot Friebes, 19-07-2010 15:52
Re:Leptosphaeria on grass
ostioles (scale=10 µm):
  • message #12392
Alain GARDIENNET, 19-07-2010 16:00
Alain GARDIENNET
Re:Leptosphaeria on grass
It coulb be Phaeosphaeria fuckelii ?
I will look at this hypothesis.
Alain
Alain GARDIENNET, 19-07-2010 16:07
Alain GARDIENNET
Re:Leptosphaeria on grass
In that genus, it is frequently useful to observe ascospores in ink. Sometimes, P. fuckelii shows a sheath on ascospores.
Have you seen it ?
Nevertheless, I think it could be P. fuckelii.
Alain
Gernot Friebes, 19-07-2010 16:09
Re:Leptosphaeria on grass
I have material left and I will check on a possible sheath. I will write if I have seen something!

Gernot
Gernot Friebes, 20-07-2010 18:46
Re:Leptosphaeria on grass
I looked at some ascospores in Indian ink and most of them didn't have a sheath although I also found some spores were a sheath was more or less well visible. Here I show you the best photo I could take. Would you say that P. fuckelii is sure, now that I observed a sheath on at least some spores?

Best wishes,

Gernot

  • message #12409
Alain GARDIENNET, 21-07-2010 16:26
Alain GARDIENNET
Re:Leptosphaeria on grass
Very good !
I think it's quite sure P. fuckelii.
Best wishes,
Alain
Gernot Friebes, 21-07-2010 19:39
Re:Leptosphaeria on grass
thanks a lot, Alain!