Accès membres

Mot de passe perdu? S'inscrire

03-10-2024 20:56

Orange disc, Melastiza flavorubens
Margot en Geert Vullings

These orange discs were found in September on mois

04-10-2024 17:08

Orange disc, Melastiza flavorubens?
Birgit Lüthje

I just found a very similar ascomycet on a heap of

05-10-2024 15:55

Humaria hemisphaerica
B Shelbourne B Shelbourne

• Macro and habitat suggest Humaria hemisphaeric

01-10-2024 17:02

Chlorociboria aeruginascens
B Shelbourne B Shelbourne

• Habitat and macro suggest Chlorociboria.• P

01-10-2024 16:15

Orbilia from Germany (Schwäbische Alb)
Lothar Krieglsteiner Lothar Krieglsteiner

.. on deciduous twig, on and near old specimens of

01-10-2024 11:14

Sur Mycena
Michel RIMBAUD

Bonjour,La semaine dernière en réoltant des mycÃ

30-09-2024 22:15

Hairs on Betula bark
Alan Smith

I found a 'forest' of hair-like structures on the

29-09-2024 13:17

Ciboria batschiana
B Shelbourne B Shelbourne

• Macro and habitat suggested Ciboria, and C. ba

22-09-2024 20:24

Asco on silene
Robin Isaksson Robin Isaksson

Dear all, I did found this one on on S. acauli

08-09-2024 21:31

Possible Rutstroemia sydowiana
B Shelbourne B Shelbourne

• Stromatised substrate and macro like genus Rut

« < 1 2 3 4 5 > »
Bitunicate asco on bark of a leaving trunk of Fagus
Enrique Rubio, 21-03-2012 17:32
Enrique Rubio

Hi to all:
These blackish, small (up to 700 microns), gregarious, solitary, globose and semiinmersed pseudothecia  were at 2-3 m high on bark of a leaving Fagus sylvatica. They seem to be ostiolate but I'm not sure.

The spores are finally brownish or gloden brown and inconspicually 1-septate. Asci not unitunicate. Pseudoparaphyses are present.
Have you some idea ?
Many thanks again
Enrique    

  • message #17909
  • message #17909
  • message #17909
  • message #17909
  • message #17909
  • message #17909
  • message #17909
  • message #17909
Thomas Læssøe, 21-03-2012 17:46
Re : Bitunicate asco on bark of a leaving trunk of Fagus
how about Pyrenula (lichenized)?


cheers

Thomas
Enrique Rubio, 21-03-2012 17:59
Enrique Rubio
Re : Bitunicate asco on bark of a leaving trunk of Fagus
Thank you, Thomas. I have been looking at images of Pyrenula and I believe that you are right.
Enrique
Hans-Otto Baral, 21-03-2012 18:42
Hans-Otto Baral
Re : Bitunicate asco on bark of a leaving trunk of Fagus
I have no experience with Pyrenula, but I considered that you have Navicella pileata. Torsten Richter and I investigated this species a bit, and this turned out to be quite difficult because of variation in spore size and number of cells.

Navicella is placed in Pyrenulales. Now, what about the difference to Pyrenula? A thallus only?

But now I see the spores of Enrique's fungus are much smaller than in Navicella. What is nice to see on your images is the difference of living and dead cells: roundish and with a globose drop when alive, angular and with indistnct contents when dead.

Zotto
Enrique Rubio, 21-03-2012 19:33
Enrique Rubio
Re : Bitunicate asco on bark of a leaving trunk of Fagus
Thank you again, Zotto
Enrique
Hans-Otto Baral, 21-03-2012 20:40
Hans-Otto Baral
Re : Bitunicate asco on bark of a leaving trunk of Fagus
I read that some Pyrenula species react red in KOH in the perithecium. Did you test with KOH?

Pyrenula is said to have Trentepohlia algae (with orange LBs in the cells) in their thallus. Can you find any thallus?

Zotto
Enrique Rubio, 22-03-2012 16:40
Enrique Rubio
Re : Bitunicate asco on bark of a leaving trunk of Fagus
I'm sorry, Zotto. Before could to read your message I already had shot the material