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23-11-2019 00:27

BERNARD CLESSE BERNARD CLESSE

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

22-11-2019 11:18

Lothar Krieglsteiner Lothar Krieglsteiner

... found 12.11.2019, Burg Vogelsang, Eingang, an

22-11-2019 09:41

Enrique Rubio Enrique Rubio

Hi againThis Mollisia grew on corticated branches

02-02-2014 23:37

Milanka Tanaskovic

Bonjour à tous,   Voici un champignon récolté

14-11-2019 16:35

Edmond POINTE Edmond POINTE

Bonjour à tous,Je me perd dans la détermination

21-11-2019 23:59

Matthias Mann Matthias Mann

Dear community, In all my Asco-Books I cannot fin

22-11-2019 11:36

Castillo Joseba Castillo Joseba

Me mandan el material seco de Galicia, recolectado

22-11-2019 10:47

Lothar Krieglsteiner Lothar Krieglsteiner

This was discovered by chance, yesterday, as I was

07-11-2019 20:59

Riet van Oosten Riet van Oosten

Hello, Found by Laurens van der Linde on a young

19-11-2019 22:08

Hagen Graebner Hagen Graebner

Dear all - thses Ascomycetes are growing on cultur

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Hyphomycète ???
Yannick Mourgues, 01-02-2014 23:03
Yannick MourguesCette chose étrange trouvée sur Rosa.

Cela ressemble à un primordium de clavaire, mais ce cône blanchâtre est en fait hérissé de "pointes" au bout desquelles se trouvent des conidiospores septées hyalines.
Le tout prend naissance dans un "périthèce" immergé dans le bois (en coupe sur le cliché)

Voir photos.

Déjà vu un truc pareil ?

Yannick
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Hans-Otto Baral, 02-02-2014 08:53
Hans-Otto Baral
Re : Hyphomycète ???
Hi Yannick

this is Isaria friesii,  and we had it quite recently here:
http://www.ascofrance.fr/search_forum/26541

Great is your observation that  it arises from perithecia! I was unaware of this although I have images of quite a number of collections. So I need to investigate my material on this peculiarity, perhaps the fungus is specific to certain pyrenos rather than vascular plants.

Is there any chance to identify the pyrenomycete?

This is one of my projects for the future, therefore I would be glad if you could send me the collection data to this.

Thanks
Zotto
Yannick Mourgues, 04-02-2014 18:27
Yannick Mourgues
Re : Hyphomycète ???
Hi Zotto !

Thank's a lot ! This Isaria is arising from an unknown and definitivly undeterminable pyrenomycete (full of something like a mycelium). All my collection is like that.

Collection data :
Saint Germain du Teil (48340) - France - 01/02/2014 - Alt.: 800m - On Rosa dead twigs, on the ground on the side of a path.
Do you need GPS point ?

Amitiés.

Yannick
Christian Lechat, 04-02-2014 19:22
Christian Lechat
Re : Hyphomycète ???
Hi to all,
Isaria is a parasitic Hypocreales. I would be surprised that Isaria is an anamorph of Disco.
 
Regards,
Christian
Hans-Otto Baral, 04-02-2014 22:45
Hans-Otto Baral
Re : Hyphomycète ???
Yes, I know. These anamorph genera are often heterogenous. Anguillospora for instance is orbiliaceous, but the type belongs to Massarina and has another type of conidial development (rhexolytic = with separating cell that splits during secession) than the others which are schizolytic (separating at the septum). Even the latter belong also in Dothideomycetes and Leotiomycetes.

Numerous such examples exist. 

I did not yet have time to search in the literature for reports of Isaria friesii. I hope there are some besides Montagne 1836!

Brian Spooner identified the fungus, and he wrote to me in 2011: "It seems to be what has been called Isaria friesii, erumpent clusters of whitish synnemata, on dead attached dry twigs of various things, including Hedera, Buddleia, Symphoricarpos etc. Just a few collections recently which I referred to this old name but didn't follow up further (and now await the new key to synnematous genera from Keith Seifert)".

I am not aware of whether this key appeared anew.

Zotto

Walter Gams, 04-02-2014 23:07
Walter Gams
Re : Hyphomycète ???
This key is published in "Genera of Hyphomycetes" in 2011
Hans-Otto Baral, 04-02-2014 23:23
Hans-Otto Baral
Re : Hyphomycète ???
Dear Walter

thanks for the hint. We arrived at Arthrobotrys stilboidea, but that name does not exist. I assume the writer meant
Arthrobotrys stilbacea J.A. Mey., Bull. trimest. Soc. mycol. Fr. 74(3): 246 (1958)
and not Arthrobotryum stilboideum which has brown, up to 3-septate conidia.

If anybody has access to this literatue we would be happy.

Zotto & Evi
Hans-Otto Baral, 04-02-2014 23:57
Hans-Otto Baral
Re : Hyphomycète ???
Here is the description of Isaria friesii. From the drawing it seems that the conidia are non-septate, and formed only terminally, both in contradiction to our fungus. No size of conidia is given. Perhaps they are smaller in Montagne's fungus.

Zotto
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Jean-Pierre VIDONNE, 05-02-2014 00:23
Re : Hyphomycète ???
Hi Zotto

Attached is J.A. Meyer 1958

Good night to all

jean-Pierre
Hans-Otto Baral, 05-02-2014 00:32
Hans-Otto Baral
Re : Hyphomycète ???
Many thanks Jean-Pierre!

From Belgish Congo, probably not our fungus :-(
though not much different

good night