Accès membres

Mot de passe perdu? S'inscrire

17-03-2007 18:37

Phaeostoma vitis
Jean Pierre Dechaume Jean Pierre Dechaume

espèce milimétrique, en grand nombre, sur populu

17-03-2007 17:12

sur carpinus
Alain GARDIENNET Alain GARDIENNET

Sur un tronc de carpinus, des grosses plaques de 3

17-03-2007 11:38

encoelia(suite)
NC NC

ma proposition vient de la clé de Zotto(DVD)mais

17-03-2007 09:06

geoglossum
Alain GARDIENNET Alain GARDIENNET

Bonjour à tous, Ma fiche concernant Geoglossum

15-03-2007 21:48

Une p'tite idée ?
ISABELLE FERRAND

A vous de jouer ! ;-)

15-03-2007 21:43

Une BISPORELLE certainement mais laquelle ?
ISABELLE FERRAND

Elle vous inspire ? ;-)

15-03-2007 21:00

PYTHIA VULGARIS ???
ISABELLE FERRAND

On m'avait donné ce nom, qu'en pensez-vous?

15-03-2007 17:44

idee
NC NC

Bonjour à tous, Sur branchette feuillu au sol, b

14-03-2007 20:56

Asco en Cyperus
Javier Ormad

Je vous ordonne cela dans des feuilles marginales

13-03-2007 23:38

sur urtica
Alain GARDIENNET Alain GARDIENNET

Bonsoir, J'ai déniché dans la partie sur une t

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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!