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09-12-2019 12:05

PASCAL DUBOC

Bonjour cette colonie de pustules orange sur vieu

09-12-2019 14:00

Pérez del Amo Carlos Manuel Pérez del Amo Carlos Manuel

Anamorfo sobre ramas sin identificar de restos de

09-12-2019 13:55

Pérez del Amo Carlos Manuel Pérez del Amo Carlos Manuel

Anamorfo sobre ramas sin identificar de restos de

09-12-2019 12:12

PASCAL DUBOC

Bonjour cette colonie de micro pustules noires &l

08-12-2019 20:38

PASCAL DUBOC

cupules <2mm à centre gris bleuté, face exter

08-12-2019 11:01

Gilbert MOYNE

Bonjour, Un petit champignon que m'a remis Andgel

07-12-2019 18:45

Laurens van der Linde Laurens van der Linde

Hallo i found the P atrovinosa with a slime specie

07-12-2019 22:22

Rubén Martínez-Gil Rubén Martínez-Gil

Hola a todos. Subo unas fotos de un asco que hemo

06-12-2019 19:49

Edvin Johannesen Edvin Johannesen

Hi! Tiny, black, oblong stromata with pure white

27-11-2019 16:54

Rasmus Riis-Hansen Rasmus Riis-Hansen

Hi,I hope you can help med with this disc found a

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minuscule helotiale sur Jonc
Michel Hairaud, 09-09-2012 23:30
Michel HairaudBonsoir, Hi to everyone ,

Je me demande à quel genre peut appartenir cette récolte faite sur Juncus dans une tourbière dont voici quelques caractéristiques


Would anyone help me with this collection on Juncus from a peat-bog , with the following features :


Apothécies minuscules : 0,1 - 0,25 mm .
Asques H+, IKI bleu intense, 63-75 x 13 - 15
Spores : OCI 5, 16-18 x 3,8 -4,8
Poils des flancs 70-90, parois épaisses, brun noirâtre, spiralés, avec des amas glutineux en surface.
EE T. prismatica.


Amitiés
Michel

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Stip Helleman, 10-09-2012 03:07
Stip Helleman
Re : minuscule helotiale sur Jonc
WOW
great finding!
to me it resembles like Phaeoscypha cladii [Hyaloscypha cladii Nag Raj & Kendr. , Uncinia scintillans Graddon]
look in Fungi non Delineati 31 Raitviir

Cheers,
Stip
Hans-Otto Baral, 10-09-2012 08:15
Hans-Otto Baral
Re : minuscule helotiale sur Jonc
Hi Michel

incredible, I fear you need to describe this fungus in detail, who knows....

Have you a photo of the apical ring in IKI? And what are these black hairs around? Anamorph??

Zotto
Michel Hairaud, 10-09-2012 10:22
Michel Hairaud
Re : minuscule helotiale sur Jonc
Hi Stip and Zotto. Thanks a lot for your diligent and sedulous answers. 

How come had I not in mind the smashing pictures by Jens Petersen in the work Stip cited !

In every collection cited, the chalara (longblack hairs) seems somehow associated with  the Phaeoscypha . In my collection, the apos are, each time, on parts of the Juncus stems  infected with the anamorph.  
I found septate spores, but not all, including inside the ascus as one can observe on the image with CRB (not quite obvious ) . Here is also a picture showing the vbs in the multiseptate paraphyses and another one for IKI ascus apex reaction. 

Amitiés
Michel 
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Hans-Otto Baral, 10-09-2012 10:29
Hans-Otto Baral
Re : minuscule helotiale sur Jonc
Great Stip!!

I also believe the spores are partly septate, inside the living ascus, the arrangement of the drops  and a very slight constriction tell for this. If you had applied Melzers to this ascus it wuld have become very obvious.

Michel, do you also have a photo of the paraphyses unstained? There are VBs which are unknown, for instance, in Unguiculariopsis.

Graddon did not believe that the Chalara belongs to the fungus. Now why has cladii priority over scintillans? cladii was described in 1975, but scintillans in 1974. With the new rules, however, the anamorph epitheton cladii MB Ellis 1961 will be the oldest, though it cannot be combined in Phaeoscypha!


Zotto
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Michel Hairaud, 10-09-2012 10:51
Michel Hairaud
Re : minuscule helotiale sur Jonc
Yes Zotto, here is a pic of paraphyses in  Le Puy de Venus tap water, but as a total addict of In Vivo Veritas, I forgot to try Melzer :-)

Michel  nouvelle photo
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Stip Helleman, 10-09-2012 12:01
Stip Helleman
Re : minuscule helotiale sur Jonc
Hi Michel,
this is great, your detailed photos provides us a better description of this species and its ecological range, did you make pictures of the chalara?, although not direct visible they seems to be  present? constante.
Did you have seen old spores, according to Spooner they should become brownish.

cheers,
Stip

Michel Hairaud, 10-09-2012 15:37
Michel Hairaud
Re : minuscule helotiale sur Jonc
Hi Stip, 

I could not observe brownn spores . Here are pics of the Chalara (120 -350 x 5-6 µm) shot on the exsic.

Would someone bring the paper by Naj Rag & Kendrick on Hyaloscypha cladii ? 

Merci encore , camarade, et amitiés

Michel
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Hans-Otto Baral, 10-09-2012 16:01
Hans-Otto Baral
Re : minuscule helotiale sur Jonc
Michel

these are only hairs, not phialides. Maybe the anamorph is not present, i.e., only with its mycelium and hairs. But I suspect it is between the hairs and much shorter and hyaline.

In the attach some pages of Nag Raj. I fear I do not have the plate of Chaetochalara cladii.

Zotto
Martin Bemmann, 10-09-2012 19:12
Martin Bemmann
Re : minuscule helotiale sur Jonc
Hi, in the attachment is a description of Chalara cladii showing the short phialides beneath long hairs.
And the plate of Nag Raj and Kendrick too (right side).

Cheers

Martin
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Chris Yeates, 10-09-2012 19:40
Chris Yeates
Re : minuscule helotiale sur Jonc
Bonsoir Tous

not brilliant I'm afraid and done in a hurry from PDFs - not the originals, but these may prove somewhat helpful:

amitiés
Chris

PS I wonder if Catania and Romero have a different species? The substratum/habitat is very different, and they describe the conidia with "pared lisa" i.e. smooth walls; in contrast Nag Raj & Kendrick stress the verrucose ends of the conidia as an important taxonomic character, and Ellis, in his original description of Chalara cladii says "utrinque truncata verruculosaque" . . . . 
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Enrique Rubio, 10-09-2012 20:23
Enrique Rubio
Re : minuscule helotiale sur Jonc
Good finding, Michel!
Congratulations


I hope you could capable of doing the same thing at Somiedo!
Martin Bemmann, 10-09-2012 20:47
Martin Bemmann
Re : minuscule helotiale sur Jonc
Hi Chris,

you are raising justified doubts on the identity of the specimen shown by Catania and Romero. (And sorry for uploading the wrong plate that Zotto had already shown). The length of the conidiophores in the description of Nag Raj and Kendrick exceed those from Argentinia by far as well (they give up to 610 µm).
But I wonder why  they do not mention the setae they show in the plate of the teleomorph (without describing them). Do they belong to the teleomorph state?

Regards

Martin
Hans-Otto Baral, 10-09-2012 23:01
Hans-Otto Baral
Re : minuscule helotiale sur Jonc
I also wonder why the setae around the apothecia and the long conidiophores are figured separately, although I am quite sure they occur intermingled. The generic name Chaetochalara refers to the presence of such sterile setae among the phialides. But the protologue is also devoid of setae, like the drawing in Nag Raj. I do  not know whether the anamorph description in Nag Raj mentions the setae (it should because the combination into Chaetochalara is based on this), but the setae are mentioned in the legend to the apothecia.

Michel's macrophoto does not actually look like there being anything else than setae. And I was wrong to assume that the conidiophores are hyaline and much shorter in this anamorph.


Zotto
Michel Hairaud, 10-09-2012 23:12
Michel Hairaud
Re : minuscule helotiale sur Jonc
Zotto, I could not find any conidiophore on my exsic, even with rehydratation, which might also explain why there is no conidia either in my micro pics , unfortunately. 

Thanks to everyone for  the documents provided and interest showed for this collection. 

Amitiés à tous
Michel
Michel Hairaud, 10-09-2012 23:16
Michel Hairaud
Re : minuscule helotiale sur Jonc
Zotto our last messages were sent at the same time and it seems we can come to the same conclusion (or interrogation as to the absence of conidiophores)
Michel
Stip Helleman, 10-09-2012 23:45
Stip Helleman
Re : minuscule helotiale sur Jonc
Unfortunately the Chaetochalara cladii is not seen,
I Attach the Sutton drawing of it (source mycobank)
for the brown spores, put your collection in a dusty drawer and wait for 25 years ;-)

Cheers,
Stip
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PASCAL DUBOC, 06-03-2013 22:47
Re : minuscule helotiale sur Jonc
Bonsoir Michel

serais tu l'auteur de l'observation de Phaeoscypha cladii à la tourbière des dauges dans le 87... ??? lu dans le rapport de la RNN des dauges
En effet nous essayons de synthétiser les données myco d'auvergne limousin sur ce site
www.fauneflore-massifcentral.fr

je crois savoir que tu devais faire une publication ? l'as tu faite ? si oui quelle serait la référence...
autoriserais tu l'utilisation d'une de tes images pour illsutrer la fiche sur le site ?

merci pour tes réponses que tu peux me donner réponse en privé

amicalement Pascal Duboc