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21-08-2010 22:32

Martin Bemmann Martin Bemmann

Hi, this one I found 3 days ago in a small park c

20-08-2010 13:11

Hans-Otto Baral Hans-Otto Baral

Hi In Middle-Sweden (Saxnäs) grew a bitunicate

12-08-2010 13:28

Gernot Friebes

Hi again, here is the second find by my friend.

12-08-2010 12:35

Gernot Friebes

Hi, a friend of mine sent me two pyrenos which

10-08-2010 19:02

Marja Pennanen

Hello, for a while I've been wondering this tiny

08-08-2010 15:34

Marja Pennanen

Hello, once again I'm lost in the jungle of new s

07-08-2010 15:51

Marja Pennanen

So I've been forced to seek damp places. The botto

06-08-2010 22:22

Jean Pierre Dechaume Jean Pierre Dechaume

Peziza de 2-3 cm, sur terre nue avec jeunes mousse

06-08-2010 00:51

Martin Bemmann Martin Bemmann

Hi all, does someone have a copy of Redhead's p

03-08-2010 01:26

Marja Pennanen

Hello folks, I found something on mosses (so I th

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Orange pyreno
Martin Bemmann, 21-08-2010 22:32
Martin BemmannHi,
this one I found 3 days ago in a small park close to the Neckar river in Heidelberg. There are only Aesculus trees, so the twig I picked up from the ground shoud be of Aesculus hippocastanum.
With the naked eye there was nothing to be seen. With my hand loup I saw something like hairy orange dust. Rehydrated at home it looked like this:

  • message #12530
Martin Bemmann, 21-08-2010 22:32
Martin Bemmann
Re:Orange pyreno
closer view:

  • message #12531
Martin Bemmann, 21-08-2010 22:35
Martin Bemmann
Re:Orange pyreno
and even more closer (mind the white hairs!):

  • message #12532
Martin Bemmann, 21-08-2010 22:37
Martin Bemmann
Re:Orange pyreno
I had no idea what it might be up to this point. Then I made a section and recognized that the main portion of this fungus is immersed in the substratum:

  • message #12533
Martin Bemmann, 21-08-2010 22:39
Martin Bemmann
Re:Orange pyreno
The outer width of the pseudothecium is 0,9 mm. The ostiolum is sometimes, when the ascocarp is mature, covered with a lump of hyphae mixed up with ejected spores.
  • message #12534
Martin Bemmann, 21-08-2010 22:40
Martin Bemmann
Re:Orange pyreno
side view of the osteolum:

  • message #12535
Martin Bemmann, 21-08-2010 22:41
Martin Bemmann
Re:Orange pyreno
Asci seem to be unitunicate and bi- or multiseriate:
  • message #12536
Martin Bemmann, 21-08-2010 22:42
Martin Bemmann
Re:Orange pyreno
And here some spores, 7 septa, (54-70 x 10-12,5 µm).

Any idea?

Best regards,

Martin
  • message #12537
Hans-Otto Baral, 22-08-2010 00:15
Hans-Otto Baral
Re:Orange pyreno
Pseudotrichia viburnicola. Sieeh DVD HB 4048, habe ich jetzt in den Melanommataceen stehen.

zotto
Martin Bemmann, 22-08-2010 00:34
Martin Bemmann
Re:Orange pyreno
Danke Zotto!
auch ich hatte den, wie der Finder Deines Belegs, erst mal für einen Discomyceten gehalten...

Gruß

Martin
Gary Samuels, 23-08-2010 21:14
Re:Orange pyreno
Looks like a Tubeufia to me.
Martin Bemmann, 24-08-2010 00:55
Martin Bemmann
Re:Orange pyreno
Hi Gary,

Pseudotrichia viburnicola as it is described by Crouan/Crouan and identified as it in some pictures in the web and on Zottos DVD would perfectly fit to my collection. But apparently there are only very few specimen collected (mostly in France) that make up this species.
The genus Tubeufia is known to me by Amy Rossman's paper of 1987. But I did not find convincing features in the keys. Maybe due tu my greenness... ;-)

Thank you for your suggestion, that widened my field of view for further study.

Martin