Accès membres

Mot de passe perdu? S'inscrire

12-03-2025 17:54

Scutellinia hyperborea?
Karl Soler Kinnerbäck

Hi all!Do you agree with Scutellinia hyperborea? P

06-06-2025 12:12

S. capillipes
Hans-Otto Baral Hans-Otto Baral

Dear all I want to ask you if you have any recent

01-06-2025 09:37

Octospora
Charles Aron Charles Aron

Hi All, I found this Octospora growing with liver

15-06-2025 21:39

Leptosphaeria cf.conoidea
éric ROMERO éric ROMERO

Bonjour à tous, Espèce récoltée sur une tige

14-06-2025 13:28

titre : Hypoxylon sur populus
Richard VALERI Richard VALERI

Bonjour à tous.Trouvé au sol, longuement résupi

13-06-2025 16:34

Strossmayeria-like on Fagus
Andgelo Mombert Andgelo Mombert

Bonjour,Un petit discomycète qui me résiste. Il

13-06-2025 19:57

Helvella
Castillo Joseba Castillo Joseba

De ayer en bosque de hayas y avellanosEjemplar uni

12-06-2025 19:36

Lachnum sp. on Larix sp. cones
Rodríguez Borja Rodríguez Borja

Hi, I have got this collection hoping you can giv

13-06-2025 09:41

Aquatic ascomycete.
Josep Torres Josep Torres

Hello.A cerebriform ascomycete sprouting scattered

12-06-2025 15:53

Arthoniales? Saccothecium-like
Viktorie Halasu Viktorie Halasu

Hello, I keep finding something with spores like

« < 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