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15-09-2019 01:46

Valencia Lopez Francisco Javier

Hola a tod@sAdjunto fotos de unas Tricharinas sp,

13-09-2019 07:32

Josep Torres Josep Torres

Hola.Hongo fotografiado anteayer sobre unas agalla

16-09-2019 19:56

Nicolas VAN VOOREN Nicolas VAN VOOREN

Here is a asexual stage of a pyrenomycete, collect

17-09-2019 17:53

Jean-Claude Malaval Jean-Claude Malaval

Bonsoir,Espèce de l'île de La RéunionAscomes 1-

16-09-2019 19:59

Castillo Joseba Castillo Joseba

Para confirmar IDDel pasado sabado sobre madera mu

16-09-2019 19:56

Castillo Joseba Castillo Joseba

Para confirmar IDDel pasado sabado sobre madera po

16-09-2019 21:28

Enrique Rubio Enrique Rubio

This Otidea grew at 1000 m in a forest with Corylu

14-09-2019 18:16

Edvin Johannesen Edvin Johannesen

Rather large apothecia (up to 12 mm) on dead wood,

15-09-2019 09:11

Castillo Joseba Castillo Joseba

De ayer en bosque de  hayas y abetos,   posible

14-09-2019 21:53

Maria Plekkenpol

Holland, 07-09-2019. In riverclay area on soil (ol

« < 1 2 3 4 5 > »
asco sp.
Yannick Mourgues, 31-08-2009 00:41
Yannick MourguesBonsoir.

Qui peut m'aiguiller sur cette récolte ?

Macro :
Ascomes sur écorce de Betula, sur branche morte encore en place à 2m de hauteur. diamètre <1,5mm.
Hyménium blanchâtre à crème brunissant lélèrement vers la marge.
Excipulum brun-grisâtre couvert de poils blanchâtres.

Micro :
Spores fusiformes parfois arquées, avec en général 2 guttules mais parfois jusqu'à 5.
19,8-21,3x3,6-5,2 um spores bisériées
Asques IKI+ à sommet "boursouflé" (y a t-il un terme pour cette forme ? Cf. dessin joint), 80-110x8-9 um, issus de boucles
Paraphyses filiformes se terminant en pointe, septées, sans contenu huileux, large de 2-3 um.
Poils de l'excipulum : cf photo.
Textura intrica avec des cellules devenant brunes vers l'excipulum.

Une idée ?
  • message #8845
Yannick Mourgues, 31-08-2009 00:43
Yannick Mourgues
Re:asco sp.
micro dessin
  • message #8846
Yannick Mourgues, 31-08-2009 00:45
Yannick Mourgues
Re:asco sp.
Poils excipulum...
  • message #8847
Yannick Mourgues, 31-08-2009 00:48
Yannick Mourgues
Re:asco sp.
Ce sera plus explicite sur ce dessin...
  • message #8848
Hans-Otto Baral, 31-08-2009 11:18
Hans-Otto Baral
Re:asco sp.
Hi Yannick

looks for a species around Hymenoscyphus fuscidulus. I would term the ascus apex mammiform. Very important would be the content of the living paraphyses, I assume they contain strongly refractive vacuoles. Also I doubt that they are normally pointed. Could you please verify this?

The ectale excipulum seems of globulosa. It would be good to have a picture of unstained cells with their natural pigment.

Also the drawn spores are dead, do you have the fungus only in the dry state?
Cheers
Zotto
Yannick Mourgues, 31-08-2009 11:51
Yannick Mourgues
Re:asco sp.
Thank's Zotto.
Yes, unfortunately my fungus is dry now.
I looked for refractive vacuoles in paraphyses when it wasn't dry, but I saw nothing. Is-it possible to see them when dry ? May be all collapsed.
I try to make a picture of ectale excipulum now.
Yannick
Hans-Otto Baral, 31-08-2009 12:36
Hans-Otto Baral
Re:asco sp.
These fungi are entirely xerointolerant, therefore these VBs totally disappear.

What you can try is a photo of the IKI-stained ascus apex. The H. fulvidulus group has a speciel rather conspicuous apical ring, unlike typical Hymenoscyphus.

Zotto
Yannick Mourgues, 31-08-2009 16:38
Yannick Mourgues
Re:asco sp.
Zotto,

I have found some paraphyses with oil content. Their apex is rounded.
Here is too a photo of the ectal excipulum.
I wasn't able to take a photo of the IKI ascus reaction : problem with my camera.

Yannick
  • message #8853
Yannick Mourgues, 31-08-2009 16:39
Yannick Mourgues
Re:asco sp.
paraphyses
  • message #8854
Hans-Otto Baral, 01-09-2009 00:16
Hans-Otto Baral
Re:asco sp.
O.k., the drops in the paraphyses are possibly oil. The tips are indeed a bit tapered. If the spores were not that large I would even suggest a Mollisia. But also the oil in the paraphyses seems unusual for a Mollisia.

Zotto
Yannick Mourgues, 01-09-2009 00:18
Yannick Mourgues
Re:asco sp.
Thanks Zotto. I put it on the rubbish-bin ?
Hans-Otto Baral, 01-09-2009 00:20
Hans-Otto Baral
Re:asco sp.
I think this is a very interesting collection, perhaps a rare species. A pitty that we do not have its vital characters.

Zotto
Yannick Mourgues, 01-09-2009 00:35
Yannick Mourgues
Re:asco sp.
Do you want me to send it to you ?
Yannick
Hans-Otto Baral, 01-09-2009 15:17
Hans-Otto Baral
Re:asco sp.
If you wish you can do. I can at least try what I can.

Zotto
Hans-Otto Baral, 05-09-2009 13:13
Hans-Otto Baral
Re:asco sp.
Now we come to a better result. I received today the wonderful specimen though in the dry state (only part of the spores were alive. It is clearly a Mollisia (!, e.g., because of the Calycina-type of apical ring, the amyloid zones being apicallywidest), and very close to M. ramealis (= Dibeloniella citrinella). I did not come to a result with Andreas' english key. The only difference to M. ramealis seems to me to be in spore spize, being much too short, and a bit too wide.

My data: Asci KOH 98-107 x 8.3-9 µm, with croziers, IKI 3rb (distinctly red!), Calycina-type. Sp. *19-21.5 x 3.7-4 µm. Paraph. KOH 3-3.8 µm wide, not or slightly obtusely lanceolate. Hymenium KOH-. Medulla very loose t. intricata, with a few some crystal druses.

The large drops in the spores are obviously a product of drying since I found some spores with a purely multiguttulate content. They then resemble those of Hymenoscyphus menthae.

So please tell me the collection data. Is the bark actually Betula? It does not at all look white. You found it on a hanging, still-attached branch?

Zotto
  • message #8937
Hans-Otto Baral, 05-09-2009 13:15
Hans-Otto Baral
Re:asco sp.
The conical, slightly mammiform ascus apex is also untypical for Hymenoscyphus s.l.
  • message #8938
Hans-Otto Baral, 05-09-2009 13:20
Hans-Otto Baral
Re:asco sp.
Excipulum only on lower flanks of vertically oriented t. globulosa, on upper flanks running under 30-40°, of. short-celled t. prismatica. The same is true in M. ramealis, also these hairs are typical there.
  • message #8939
Yannick Mourgues, 07-09-2009 00:17
Yannick Mourgues
Re:asco sp.
Thank's a lot Zotto.

I found this Mollisia on a died branch, still in place, in 2m from height, on Betula.
All the bark of this Betula was not completely white, but I am sure that it was a Betula.

The collection is from "Forêt Communale de Pelouse", Pelouse (48000-Lozère-France), 26/08/2009.

Is-it possible to have these tree pictures in highter resolution ?

Yannick
Hans-Otto Baral, 07-09-2009 00:51
Hans-Otto Baral
Re:asco sp.
Thanks, Yannick,

yes, I send you my images by email

Zotto