Accès membres

Mot de passe perdu? S'inscrire

07-12-2019 22:22

Rubén Martínez-Gil Rubén Martínez-Gil

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

11-12-2019 23:29

Juuso Äikäs

I found these in a Picea abies dominated forest in

11-12-2019 23:25

Ethan Crenson

Hello all,This was found by a friend in New York C

11-12-2019 22:21

BERNARD CLESSE BERNARD CLESSE

Bonsoir à toutes et tous,Pourriez-vous me confirm

09-01-2015 12:57

Alan Rockefeller Alan Rockefeller

I found this in a semitropical area of Queretaro,

05-01-2019 14:57

Edvin Johannesen Edvin Johannesen

These orange "jelly"-like apothecia grow at the ap

11-12-2019 16:42

BERNARD CLESSE BERNARD CLESSE

Bonjour à toutes et tous,Même s'il ne s'agit pas

05-12-2019 19:35

Ibai Olariaga Ibarguren

Dear colleagues, I was wondering if anyone could

09-12-2019 12:05

PASCAL DUBOC

Bonjour cette colonie de pustules orange sur vieu

09-12-2019 21:35

William Slosse William Slosse

Yesterday I found this species on the underside of

« < 1 2 3 4 5 > »
Discom. poilu s/ Pinus sylvestris
Luc Bailly, 08-03-2010 18:02
Luc BaillySur brindille morte de Pinus sylvestris, réc. 27.02.10; vallée de l'Ourthe, Belgique.

Apothécies en groupes, diam -> 0.8 mm, sessiles, en coupe s'étalant ensuite; hyménium de couleur datte, poils blanchâtres en lignes radiales, cils blancs.
Poils + ou - fortement incrustés, brunâtres sous le microscope, 32-40 X 2-3 µ; cils -> 60 µ.
Asques minuscules, courts, 8-sp, 24-28 x 5-5.5 µ, IKI -, spores bisériées. Spores guttulées, 4.5-6 x 1.5-1.8 (2?) µ, hyalines ou très pâles.
Paraphyses non observées, peut-être absentes.

Aucune idée...

Amitiés - LUC.
  • message #10688
Luc Bailly, 08-03-2010 18:02
Luc Bailly
Re:Discom. poilu s/ Pinus sylvestris
Jeunes ex.
  • message #10689
Luc Bailly, 08-03-2010 18:03
Luc Bailly
Re:Discom. poilu s/ Pinus sylvestris
Poils et excipulum ectal.
  • message #10690
Luc Bailly, 08-03-2010 18:03
Luc Bailly
Re:Discom. poilu s/ Pinus sylvestris
Hyménium.
  • message #10691
Luc Bailly, 08-03-2010 18:04
Luc Bailly
Re:Discom. poilu s/ Pinus sylvestris
Asque.
  • message #10692
Luc Bailly, 08-03-2010 18:04
Luc Bailly
Re:Discom. poilu s/ Pinus sylvestris
Spores.
  • message #10693
Luc Bailly, 08-03-2010 18:05
Luc Bailly
Re:Discom. poilu s/ Pinus sylvestris
Crozier?
  • message #10694
Nicolas VAN VOOREN, 08-03-2010 18:45
Nicolas VAN VOOREN
Re:Discom. poilu s/ Pinus sylvestris
On dirait un Hyalopeziza avec ses poils à paroi épaisse, réfringente. Mais avec des spores aussi petites, je ne vois pas trop de quel côté chercher...
Hans-Otto Baral, 08-03-2010 18:50
Hans-Otto Baral
Re:Discom. poilu s/ Pinus sylvestris
Thsi could be Hyalopeziza trichodea known from Pinus needles.

see http://www.ascofrance.fr/index.php?r=forum&page=viewtopic&id=7004&highlight=trichodea#msg7004

though only known from needles in the literature, as it seems.

Your asci are a bit short, but otherwise....

Zotto
Luc Bailly, 08-03-2010 19:22
Luc Bailly
Re:Discom. poilu s/ Pinus sylvestris
Hm. C'est possible aussi que, vu les conditions climatiques exécrables cette année, certaines récoltes soient atypiques.


And thank you Zotto. It's quite similar indeed, but the hymenium seems darker on my sample, and maybe I've been a bit confused because the hairs seemed incrusted in my sample (photo below). Artefact?
Cheers - LUC.
  • message #10699
Hans-Otto Baral, 08-03-2010 19:26
Hans-Otto Baral
Re:Discom. poilu s/ Pinus sylvestris
Did you take this pic with oil immersion? Your photos are a bit unsharp, perhaps you must more open the aperture of the microscope? Could you make a test: Place min. 5% KOH to the preparation, or if less then shortly heat the mount. Hyalopeziza glassy hairs should be resistent in KOH. perhaps then the surface of the hair becomes more clear? Or gets smooth??

The colour is different, I also noticed. You ar right, I am wrong with H. trichodea. Your find is the same what Antoine Ayel once gave me (HB 4050, 4052), on Pinus bark. I have this presently in Hyphodiscus, but surely it belongs more in Hyalopeziza. The hairs are granular, this was the important characteristic that gave me the idea. The spores have often 4 oil drops.

Enrique also found this species (ERD 4442), though this is said to be on Quercus.

Zotto
Luc Bailly, 08-03-2010 23:23
Luc Bailly
Re:Discom. poilu s/ Pinus sylvestris
Yes, it's taken with immersion oil. I'll try opening the aperture more.
I still have the specimen in the fridge, I'll do the experiment in KOH tomorrow and I'll tell you what happens.

And yes, it grows on the bark of the tiny dead branch.
Luc Bailly, 09-03-2010 16:21
Luc Bailly
Re:Discom. poilu s/ Pinus sylvestris
Hi Zotto (et bonjour à tous)
Here's first a better photo of a granular hair in water, hopefully this photo's a bit better.
And as you indicated, most spores have indeed 4 guttules.
  • message #10708
Luc Bailly, 09-03-2010 16:24
Luc Bailly
Re:Discom. poilu s/ Pinus sylvestris
The granules are dissolved in KOH (I use 10% KOH, but mixed with a little drop of water, it was between 5 and 10%), and here's the result:
  • message #10709
Luc Bailly, 09-03-2010 16:28
Luc Bailly
Re:Discom. poilu s/ Pinus sylvestris
Ectal excipulum in KOH:

And I still have the specimen in the fridge. If you're interested in studying it (if it's something interesting), I can send it to you by mail. I just need your address.

Full data's are:
Mont des Pins, La Rote, Bomal s/Ourthe, Durbuy, prov. LX, Belgium, and date of gathering: 27.02.10.

Cheers - LUC.
  • message #10710
Hans-Otto Baral, 09-03-2010 17:54
Hans-Otto Baral
Re:Discom. poilu s/ Pinus sylvestris
Dear Luc

yours is exactly the same as Enrique's and Antoine's finds. I wonder whether there is nothing in the literature. I think I would have notized if there is something in Grelet (?).

But I have little time so I must not study your collection now. I think the species will show up again at some time. A possible relationship is quite evident with what I have possibly as Hyphodiscus sericeus on the DVD (HB 5851 etc.), though there the hairs are never such glassy-thickwalled, and the spore contents are different.

The true Chlorosplenium sericeum is probably the same as Erinella aeruginosa, the green disco with 40 µm long spores.

Zotto
Luc Bailly, 09-03-2010 18:25
Luc Bailly
Re:Discom. poilu s/ Pinus sylvestris
There are chances I will find this species again, indeed, but this sounds like the kind of things one finds when not searching especially for it :-D

I'll have a look in the DVD then.

Cheers - LUC.