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Our revision of Marthamycetales (Leotiomycetes) is
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Philippe PELLICIERApothécies petites jusquà 3 mm, oranges, avec de
Orange pyreno
Martin Bemmann,
21-08-2010 22:32
Hi,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:
Martin Bemmann,
21-08-2010 22:32
Re:Orange pyreno
closer view:
Martin Bemmann,
21-08-2010 22:35
Re:Orange pyreno
and even more closer (mind the white hairs!):
Martin Bemmann,
21-08-2010 22:37
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:
Martin Bemmann,
21-08-2010 22:39
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.
Martin Bemmann,
21-08-2010 22:40
Re:Orange pyreno
side view of the osteolum:
Martin Bemmann,
21-08-2010 22:41
Re:Orange pyreno
Asci seem to be unitunicate and bi- or multiseriate:
Martin Bemmann,
21-08-2010 22:42
Re:Orange pyreno
And here some spores, 7 septa, (54-70 x 10-12,5 µm).
Any idea?
Best regards,
Martin
Any idea?
Best regards,
Martin
Hans-Otto Baral,
22-08-2010 00:15
Re:Orange pyreno
Pseudotrichia viburnicola. Sieeh DVD HB 4048, habe ich jetzt in den Melanommataceen stehen.
zotto
zotto
Martin Bemmann,
22-08-2010 00:34
Re:Orange pyreno
Danke Zotto!
auch ich hatte den, wie der Finder Deines Belegs, erst mal für einen Discomyceten gehalten...
Gruß
Martin
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
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
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