24-02-2026 11:01
Gernot FriebesHi,found on a branch of Tilia, with conidia measur
23-02-2026 11:22
Thomas Læssøehttps://svampe.databasen.org/observations/10584971
29-11-2024 21:47
Yanick BOULANGERBonjourJ'avais un deuxième échantillon moins mat
07-02-2023 22:28
Ethan CrensonHello friends, On Sunday, in the southern part of
19-02-2026 17:49
Salvador Emilio JoseHola buenas tardes!! Necesito ayuda para la ident
19-02-2026 13:50
Margot en Geert VullingsWe found this collection on deciduous wood on 7-2-
Leptosphaeria on grass
Gernot Friebes,
19-07-2010 15:50
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:
Gernot Friebes,
19-07-2010 15:51
Re:Leptosphaeria on grass
micros (scale=10 µm):
Gernot Friebes,
19-07-2010 15:51
Re:Leptosphaeria on grass
sections (scale=10 µm):
Gernot Friebes,
19-07-2010 15:51
Re:Leptosphaeria on grass
sections (scale=10 µm):
Gernot Friebes,
19-07-2010 15:52
Re:Leptosphaeria on grass
ostioles (scale=10 µm):
Alain GARDIENNET,
19-07-2010 16:00
Re:Leptosphaeria on grass
It coulb be Phaeosphaeria fuckelii ?
I will look at this hypothesis.
Alain
I will look at this hypothesis.
Alain
Alain GARDIENNET,
19-07-2010 16:07
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
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
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
Best wishes,
Gernot
Alain GARDIENNET,
21-07-2010 16:26
Re:Leptosphaeria on grass
Very good !
I think it's quite sure P. fuckelii.
Best wishes,
Alain
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!