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08-12-2019 20:38

PASCAL DUBOC

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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Leptosphaeria
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
Enrique
  • 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.
Christian
Enrique Rubio, 26-06-2011 17:45
Enrique Rubio
Re : Leptosphaeria
Merci bien, Christian

Enrique
Alain GARDIENNET, 27-06-2011 22:41
Alain GARDIENNET
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 ?
Alain
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
Hi

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.

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

I agree with Björn - see http://www.ascofrance.com/search_recolte/3097 note the ascospores constricted centrally, but much less so at the other septa

Chris

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

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

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.

regards,
björn
Alain GARDIENNET, 04-05-2012 08:13
Alain GARDIENNET
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 ?
Alain
Enrique Rubio, 04-05-2012 20:44
Enrique Rubio
Re : Leptosphaeria
Many thanks to all