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14-11-2007 11:46

Michel RIMBAUD

Bonjour. Je recommence car on me signale que les i

14-11-2007 11:41

Michel RIMBAUD

Bonjour. Je recommence car on me signale que les i

13-11-2007 18:29

Michel RIMBAUD

Bonjour. J'ai récolté un specimen dont je ne peu

13-11-2007 18:27

Michel RIMBAUD

Bonjour. J'ai récolté un specimen dont je ne peu

13-11-2007 18:25

Michel RIMBAUD

Bonjour. J'ai récolté un specimen dont la micro

13-11-2007 00:16

NC NC

Bonsoir à tous, Encore un Disco dont je n'ai auc

11-11-2007 17:50

Hans-Otto Baral Hans-Otto Baral

Bon soir anybody an idea about a Phaeostibella

09-11-2007 18:18

Alain GARDIENNET Alain GARDIENNET

L'anamorphe de Hypoxylon howeianum a-t-il un petit

09-11-2007 18:15

Alain GARDIENNET Alain GARDIENNET

Quelqu'un aurait-il une description macroscopique

09-11-2007 18:12

Alain GARDIENNET Alain GARDIENNET

Bonsoir, j'aurais 3 questions à vous poser. Afin

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Microthyriale on Lophocolea
Enrique Rubio, 26-02-2016 15:40
Enrique Rubio

Hi to everybody


Searching for helotiales on liverworts we have found these very minute (70-100 microns), superficial, scattered, ostiolate, brownish black thyriothecia (i feel they are so by the type of tissue) on decaying thallus of I pressume Lophocolea bidentata. The bitunicate asci are oligosporic, perhaps only 4-spored. Ascospores hyaline or subhyaline, 1-septate.


Have you some idea for help me?


Many thanks again

  • message #41189
  • message #41189
Georges Greiff, 05-01-2022 15:24
Re : Microthyriale on Lophocolea
Hi Enrique,

Did you get anywhere with this? It looks related to Lichenopeltella alpestris s.l. found on Plagiochila asplenioides (see Marsh et al., 2010) but is clearly distinct as it lacks the papilliform cells on the ostiole neck and the asci are 4-spored.

George
Enrique Rubio, 05-01-2022 15:31
Enrique Rubio
Re : Microthyriale on Lophocolea
Hi Georges.
Nothing. I had even forgotten about it. But since you're talking about it, do you have a description of this fungus you're talking about in  IMI Descr. Fungi Bact. 174(nos 1731-1740): [2] (2007)?
Georges Greiff, 05-01-2022 15:42
Re : Microthyriale on Lophocolea
Hi Enrique,

I only have this https://karstenia.fi/ascomycetes-and-anamorphic-fungi-growing-on-plagiochila-hepaticae-in-finland/ - I have collected this on Plagiochila asplenioides and once on dead Polytrichum commune antheridial cups. We think it may be colonising the cuticle, perhaps with a broad host range.

And a documentation of my collection here https://fungi.myspecies.info/all-fungi/lichenopeltella-sp-p4998 - it is distinct from the true L. alpestris.

Hope this helps,
George
Enrique Rubio, 05-01-2022 19:52
Enrique Rubio
Re : Microthyriale on Lophocolea
Thank you, Georges, but I don't think that my collection can be assimilated to those you indicate.
I will keep on waiting
Chris Yeates, 06-01-2022 19:40
Chris Yeates
Re : Microthyriale on Lophocolea
The IMI Description Enrique mentions above is not about alpestris - that taxon is merely part of several new combinations into Lichenopeltella.

Chris
Enrique Rubio, 06-01-2022 19:57
Enrique Rubio
Re : Microthyriale on Lophocolea
Thanks a lot, Chris.
Georges Greiff, 08-05-2022 16:03
Re : Microthyriale on Lophocolea
Not an ID but some notes on similar collections as I have been working a bit on these today.

I found what seems to fit L. fimbriata and also L. alpestris sensu Racovitza on the abaxial leaf surfaces of Polytrichum commune antheridial cups. The former is particularly interesting given that it was only found on conifer leaves in the past, and the latter seems to grow on several moss and liverwort hosts. Maybe this suggests wide host preferences for some members of the group - they are often on waxy parts of host plants.

https://bryophilous.co.uk/lichenopeltella-sp/

It could even be worth checking the lichenicolous ones for candidates for this collection - a previous post on this forum suggests that a species was found both on Cladonia and surrounding spruce needles. http://www.ascofrance.com/search_forum/52475

Racovitza (1959) also includes L. cetraricola as recorded on a liverwort, and Aulographella muscicola on a moss. Yours is different to both of these as well.

I still need to read more about the many lichenicolous ones...

All the best,
George