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Mot de passe perdu? S'inscrire

09-08-2020 07:55

Lothar Krieglsteiner Lothar Krieglsteiner

... maybe Molinia, in an acid bog (near Narthecium

15-02-2018 08:09

BERNARD CLESSE BERNARD CLESSE

Sur tige morte de renouée du Japon.Aucune idée

09-07-2020 00:39

Valencia Lopez Francisco Javier

Hola a todosEncontré este curioso ascomycete a me

08-08-2020 20:54

Antonio Couceiro

Ascoma de 5cm, creciendo entre raices de Prunus la

09-08-2020 22:18

Lothar Krieglsteiner Lothar Krieglsteiner

... the spores of this find (today, in the Eifel,

09-08-2020 15:33

Eduard Osieck

Can somebody provide a copy of GÖRKE, C. & H

09-08-2020 23:56

Garcia Susana

Hola, He recogido estos apotecios sobre una rama

09-08-2020 14:20

Castillo Joseba Castillo Joseba

De esta mañana en el himenio de una Daedaleopsis

09-08-2020 07:33

Lothar Krieglsteiner Lothar Krieglsteiner

... exactly Filipendula ulmaria, in the Eifel (Ger

09-08-2020 15:22

Eduard Osieck

This long papillate, bitunicate asco with muriform

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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