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19-01-2020 15:20

Andreas Gminder Andreas Gminder

Hello,on sheep dung after 14 days in culture I fou

19-01-2020 14:50

Castillo Joseba Castillo Joseba

Esto lo recolectamos en bellota de  quercusNo ten

19-01-2020 10:45

Castillo Joseba Castillo Joseba

La hemos recolectado en frutos de EucaliptoA ver s

19-01-2020 10:59

Didier ARGAUD

Une question de mon ami Bernard Woerly qui voudrai

15-01-2020 00:11

William Slosse William Slosse

Hallo Forum,I recently found a curious ascomycetes

18-01-2020 19:03

BERNARD CLESSE BERNARD CLESSE

Bonsoir à toutes et tous,Une idée pour cet asco

18-01-2020 08:13

Juuso Äikäs

These were growing on the underside of a piece of

17-01-2020 23:49

Ethan Crenson

Hello again, I found this in a NYC park on very w

18-01-2020 12:40

Calzada Augusto Calzada Augusto

Hola amigos:Estoy estudiando una Gyalidea multispo

18-01-2020 11:51

Castillo Joseba Castillo Joseba

Encontramos esta bellota de quercus con algun tipo

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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