Accès membres

Mot de passe perdu? S'inscrire

12-07-2020 17:42

Juuso Äikäs

I found a lot of these growing gregariously on dea

12-07-2020 21:17

BERNARD CLESSE BERNARD CLESSE

Bonsoir à toutes et à tous,Que pensez-vous de ce

12-07-2020 19:23

Andgelo Mombert Andgelo Mombert

Bonsoir, Sur bois mort décortiqué, immergé dan

12-07-2020 16:30

Gilbert MOYNE

Bonjour, Une récolte qui me pose quelques probl

09-07-2020 00:39

Valencia Lopez Francisco Javier

Hola a todosEncontré este curioso ascomycete a me

07-07-2020 13:34

Sergey Markov

I found this peziza sp. on loamy soil - on the gro

10-07-2020 17:50

Garcia Susana

Hola, Me gustaría vuestra ayuda para identificar

08-07-2020 00:01

Shane John

I would ask the indulgence of the group to perhaps

08-07-2020 16:47

Chris Yeates Chris Yeates

Bonjour tous While searching for the downy mildew

10-07-2020 14:26

Thomas Læssøe

Anybody in the know of eg Pseudoneottispora?See: 

« < 1 2 3 4 5 > »
Pleosporale on indeterminate dicot. stems
Enrique Rubio, 16-05-2012 17:02
Enrique RubioHi again

What do you think about these small (up to 0.5 mm), gregarious, blackish, inmersed (suepidermial), glabrous, sessile and ostiolate (not compressed) pseudothecia that grew on indeterminate dicot. stems at 1600 m of altitude?.
The yellowish ascospores are persistently 5-septate, 6-celled, and the third cell are apically sligthly enlarged. 


Many thanks in advance for your kindly help
Enrique
  • message #18597
  • message #18597
  • message #18597
  • message #18597
  • message #18597
  • message #18597
  • message #18597
  • message #18597
  • message #18597
Huzefa Huzefa Raja, 16-05-2012 17:06
Re : Pleosporale on indeterminate dicot. stems
Nice pictures. Seems to me it is a species of the genus Ophiobolus.
Enrique Rubio, 16-05-2012 17:13
Enrique Rubio
Re : Pleosporale on indeterminate dicot. stems
But, what species?
Thanks Huzefa
Huzefa Huzefa Raja, 16-05-2012 17:18
Re : Pleosporale on indeterminate dicot. stems
Hi Enrique
I am not sure-sorry.  It is a large genus and the literature is quite wide spread.

Best

Huzefa
Huzefa Huzefa Raja, 16-05-2012 17:25
Re : Pleosporale on indeterminate dicot. stems
Attached is a key that might help shed some light on the species epithet.
Enrique Rubio, 16-05-2012 17:37
Enrique Rubio
Re : Pleosporale on indeterminate dicot. stems
Already I had read this paper, but without success...
Thanks!
Huzefa Huzefa Raja, 16-05-2012 17:50
Re : Pleosporale on indeterminate dicot. stems
Sure, I will see if I can find any more papers on this genus. 

Perhaps, you can send these picts to Robert A. Shoemaker in Canada, who has done some early work with this genus.

Best

Huzefa
Paul LEROY, 16-05-2012 19:58
Re : Pleosporale on indeterminate dicot. stems
Hello Enrique,
Je  pense moi aussi que ce champignon est probablement un Ophiobolus bien que
les ascomes ne soient pas collapsés.Toutefois,dans ma documentation je n'ai aucun
spécimen qui correspond à ce que tu représentes. Ceci est intéressant et j'aimerais
bien que quelqu'un l'identifie. Il pourrait aussi être cherché vers Nodulosphaeria ou
Entodesmium mais certains caractères ne conviennent pas.
Amicalement
Paul LEROY
Björn Wergen, 16-05-2012 20:19
Björn Wergen
Re : Pleosporale on indeterminate dicot. stems
This one is not easy to identify, as I said via email. Macroscopically it could be necessary to look for "subiculum" hyphae and microscopically it is important to see what happens with the spores after leaving the asci (part spores?) and which cell is enlarged.

I cannot find any matching species.

regards,
björn
Enrique Rubio, 16-05-2012 20:40
Enrique Rubio
Re : Pleosporale on indeterminate dicot. stems
I could have seen only some free ascospores out of the asci, and they were entire, no part spores.
Martin Bemmann, 16-05-2012 20:47
Martin Bemmann
Re : Pleosporale on indeterminate dicot. stems
Hi Enrique,

another species that vanished from the screen is Leptosphaeriopsis acuminata (not listet by IF or MB but depicted by Berlese - see attachment-).  But it still has mor septa in the spores.
Do you have Müller's work on Ophiobolus? Maybe it will not help much, I did not find a match to your find.

Regards

Martin
  • message #18612
Enrique Rubio, 16-05-2012 20:58
Enrique Rubio
Re : Pleosporale on indeterminate dicot. stems
No Martin. I have not Müller's work.
Thanks!
Luc Bailly, 16-05-2012 22:32
Luc Bailly
Re : Pleosporale on indeterminate dicot. stems
Hello all,
I don't recognize Ophiobolus acuminatus in Enrique's sample. There's a shema of the spores in Ellis & Ellis, and it's quite clear: the enlarged cells are close to the middle, and the spores divide in two halves when poking out the ascus.
I found O. acuminatus in 2011 in a bog, on Cirsium palustre.

Cheers - LUC.
Martin Bemmann, 16-05-2012 22:44
Martin Bemmann
Re : Pleosporale on indeterminate dicot. stems
d'accord Luc...
Björn Wergen, 16-05-2012 23:41
Björn Wergen
Re : Pleosporale on indeterminate dicot. stems
O. acuminatus is one of the commonest fungi growing on dead Cirsium stems. I have examined it several times (until it had became boring). :D

THIS one is definitive not O. acuminatus


I think Enrique's recolt is a new species, not yet described. That's all.

regards,
björn
Enrique Rubio, 17-05-2012 17:59
Enrique Rubio
Re : Pleosporale on indeterminate dicot. stems
Clearly is not Ophiobolus acuminatus.
Thank you to all
Enrique
Mlcoch Patrik, 30-11-2016 21:47
Mlcoch Patrik
Re : Pleosporale on indeterminate dicot. stems
This is possible something from genus Leptosphaeria. for example L. tenera agg. What to substrate?