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08-12-2019 20:38


cupules <2mm à centre gris bleuté, face exter

08-12-2019 11:01

Gilbert MOYNE

Bonjour, Un petit champignon que m'a remis Andgel

07-12-2019 18:45

Laurens van der Linde Laurens van der Linde

Hallo i found the P atrovinosa with a slime specie

07-12-2019 22:22

Rubén Martínez-Gil Rubén Martínez-Gil

Hola a todos. Subo unas fotos de un asco que hemo

06-12-2019 19:49

Edvin Johannesen Edvin Johannesen

Hi! Tiny, black, oblong stromata with pure white

27-11-2019 16:54

Rasmus Riis-Hansen Rasmus Riis-Hansen

Hi,I hope you can help med with this disc found a

05-12-2019 09:06

Valencia Lopez Francisco Javier

Hola amigosEstoy buscando este trabajo de la Errot

05-12-2019 19:35

Ibai Olariaga Ibarguren

Dear colleagues, I was wondering if anyone could

19-11-2019 18:05

Lothar Krieglsteiner Lothar Krieglsteiner

... under a twig of deciduous tree (likely Quercus

29-06-2011 22:52

Luc Bailly Luc Bailly

Encore trois ascos de la réserve naturelle domani

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Enrique Rubio, 26-06-2011 17:19
Enrique RubioHi to all:

Do you know this Leptosphaeria species that grows on dicot. herbaceous stems? Maybe Leptosphaeria ogilviensis? Are the roundish polar gel sheath of the spores typical for this fungus?
Many thanks again
  • message #15650
  • message #15650
  • message #15650
Christian Lechat, 26-06-2011 17:41
Christian Lechat
Re : Leptosphaeria
Hi Enrique,
I think you are right, L. ogilviensis possess such ascospores with globose, terminal appendages.
Enrique Rubio, 26-06-2011 17:45
Enrique Rubio
Re : Leptosphaeria
Merci bien, Christian

Alain GARDIENNET, 27-06-2011 22:41
Re : Leptosphaeria
Holm put the Leptoshaeria species with such appendages in the genus Nodulosphaeria. I never read that ogilviensis have that feature.
Enrique, don't you have any idea for the substrate ?
Another question : have you noticed that the substrate is blackened ?
Enrique Rubio, 28-06-2011 18:29
Enrique Rubio
Re : Leptosphaeria
No. Alain. Sorry. I only know that is a dicot. herbaceous stem and I have seen any blackened zone at the sustrate.
Björn Wergen, 03-05-2012 13:29
Björn Wergen
Re : Leptosphaeria

I am sorry to restart such an old topic but I have some problems here with L.ogilviensis. I think L. ogilviensis is a species with Sp. 30-40µm length with 3rd cell enlarged.  

In this case I would say you fungus is Leptosphaeria maculans, which has spores around 40-50µm length and no enlarged cells (and septa are not strongly constricted). 

@Alain: you have found the L. maculans already. What do you think?? I also have found this species and called it L. ogilviensis (see database). But now I think this one is L. maculans too.

Chris Yeates, 03-05-2012 20:45
Chris Yeates
Re : Leptosphaeria
Bonsoir à tous

I agree with Björn - see note the ascospores constricted centrally, but much less so at the other septa


Enrique Rubio, 03-05-2012 21:14
Enrique Rubio
Re : Leptosphaeria

Have you seen the roundish gel sheath around de spore poles?

Björn Wergen, 03-05-2012 21:33
Björn Wergen
Re : Leptosphaeria
Yes I have, and L. maculans have them too, this is not only characteristic for L. ogilviensis.

Alain GARDIENNET, 04-05-2012 08:13
Re : Leptosphaeria
Hi friends,
Yes, surely ascospores feautures fit better for maculans, I agree of course.
But I've read nowhere in litterature (and you ?) that ascospores have roundish polar gel ; that's the reason why, I prefered to say nothing.
Perhaps this feature is occasionnal ?
Enrique Rubio, 04-05-2012 20:44
Enrique Rubio
Re : Leptosphaeria
Many thanks to all