Accès membres

Mot de passe perdu? S'inscrire

09-01-2023 08:14

Francisco  SÃNCHEZ Francisco SÁNCHEZ

Ascomiceto anaranjado sobre suelo desnudo, 29/12/2

27-05-2024 22:10

Ethan Crenson

Hi everyone, I found these lovely stipitate ascos

26-05-2024 12:05

Alain Delannoy

Bonjour,Je n'arrive pas à mettre un nom sur cette

25-05-2024 16:40

Sylvie Le Goff

Bonjourj'aimerais confirmation ou pas pour ce peti

25-05-2024 18:29

Malcolm  Greaves Malcolm Greaves

I found a group of Mitrula gracilis? on wet debris

25-05-2024 16:54

Sylvie Le Goff

Bonjour j'aimerais confirmation ou infirmation de

22-05-2024 23:39

Marc Detollenaere Marc Detollenaere

Dear Forum,On debarked Fagus I found some small wh

21-05-2024 17:48

Karl Soler Kinnerbäck

Hi all,Could this be Venturioscypha or Venturiocis

21-05-2024 11:33

Nihad Omerovic

Hello,found on dead, dry, attached (and fallen) tw

07-11-2018 08:34

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello, could someone send this publication to me

« < 1 2 3 4 5 > »
Ostropales
Gernot Friebes, 16-04-2009 23:05
Hello,

this time I found an Ostropales I can not identify. It grew on an decorticated branch of Fagus and has an ochre to dirty pinkish hymenium with a brownish margin. The spores are 9-12 x 2 µm and aseptate, the paraphyses are apical slightly thickened with many cells and the asci have quite a strange form. The hymenium is dextrinoid and a little bit bluish to greenish in Lugol and in Melzer's reagent pretreated with KOH 5% it reacts slightly blue. The excipulum is dark brown and without crystals.

Best wishes,

Gernot
  • message #7519
Gernot Friebes, 16-04-2009 23:08
Re:Ostropales
S...spores
A...asci
P...paraphyses
AL...asci in lugol
  • message #7520
Gernot Friebes, 16-04-2009 23:10
Re:Ostropales
S...section
E...excipulum
HL...hymenium in lugol
HM...hymenium in Melzer's reagent pretreated with KOH 5%
  • message #7521
Hans-Otto Baral, 17-04-2009 10:56
Hans-Otto Baral
Re:Ostropales
Hi Gernot

The order Ostropales is obviously correct, but the species I do not know. It could be a Cryptodiscus, but it is not C. foveolaris which has a similar spore size but always 1-septate spores when mature, and especially never a dark margin. To clarify the genus it would be helpful to have a section of the margin. In Karstenia there are very distinct periphyses on the inner sied of the lobes which point in a horizontal direction and reach down to the base of the asci, while in Cryptodiscus the periphyses are less distinct and intergrade with the tips of the paraphyses. I assume you will find images on the DVD about that.

The red reaction is hemiamyloid, not dextrinoid, see my homepage
http://www.gbif-mycology.de/HostedSites/Baral/


Zotto
Gernot Friebes, 17-04-2009 20:49
Re:Ostropales
Hi Zotto,

thanks for your answer! A section of the margin is more complicated than I thought because you never see any clear defined cells and it is hard to make a good picture but maybe the new ones help a little.

: The red reaction is hemiamyloid, not dextrinoid, see my homepage

Sure, stupid mistake, thanks for the correction.

Best wishes,

Gernot

Ps.: I wont be able to answer for a week, that means I dont ignore your answers if I dont write back immediately.
  • message #7543
Gernot Friebes, 17-04-2009 20:50
Re:Ostropales
picture 2
  • message #7544
Hans-Otto Baral, 17-04-2009 22:08
Hans-Otto Baral
Re:Ostropales
I know these sections are difficult to perform. When moist the tissue is too elastic, and when dry you easily loose your section, or the fungus breaks before you succeed. On the macro I see that the margin protrudes as lobes, On the micro I don't see a protruding margin, apparently because the section missed the lobes. Anyhow, a Karstenia is excluded, but where to search for this fungus? Any genera other than Cryptodiscus? I have no idea.

Zotto
Gernot Friebes, 18-04-2009 06:10
Re:Ostropales
: On the macro I see that the margin protrudes as lobes, On the micro I don't see a protruding margin, : apparently because the section missed the lobes.

you are right, within ca. 10 sections no one still had the margin. Seems to be an interesting fungus, maybe even something new.

Best wishes,

Gernot