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01-07-2010 11:36

Gernot Friebes

Hi, this pyrenomycet grew on a very wet piece o

30-06-2010 15:57

Nicolas VAN VOOREN Nicolas VAN VOOREN

On m'a confié une récolte d'un Melastiza (trouvÃ

30-06-2010 14:12

Beñat Jeannerot Beñat Jeannerot

Adio à tous, Votre avis sur cette autre péziz

30-06-2010 14:09

Beñat Jeannerot Beñat Jeannerot

Adio à tous, Votre avis sur cette pézize. Je

27-06-2010 00:49

Yannick Mourgues Yannick Mourgues

Bonsoir à tous. Avec Lachnum cf. reynoutriae s

26-06-2010 01:06

Yannick Mourgues Yannick Mourgues

Hi. Here is another recolt. on Epilobium too wi

25-06-2010 00:50

Yannick Mourgues Yannick Mourgues

Hi everybody. Here is e collection of lachnum c

22-06-2010 17:20

Hans-Otto Baral Hans-Otto Baral

Hi Here is a (cf.) Leptosphaeria on Impatiens n

21-06-2010 22:49

Hans-Otto Baral Hans-Otto Baral

Hi I have here perithecia on Deschampsia leaves wh

21-06-2010 00:40

Yannick Mourgues Yannick Mourgues

Bonjour à tous. Connaissez-vous cet étrange asc

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Pyrenomycet on wet wood
Gernot Friebes, 01-07-2010 11:36
Hi,

this pyrenomycet grew on a very wet piece of a stem lying next to a stream, together with Pseudohalonectria lutea, Miladina lecithina, Orbilia sarraziniana and others. The spores remind me of Kirschsteiniothelia aethiops, however, they are too big and the other characters do not fit.

The perithecia are smooth, very soft, black and +- superficial. The spores are smooth too, 32-38 x 13-14 µm big and always two-celled. I didn't observe any sheaths. The asci are +- cylindrical, 8-spored and bitunicate. Paraphyses are present. The peridium consists of brown, roundish to angular cells.

I'd be happy if you could help me. :)

Best wishes,

Gernot


perithecia:
  • message #12175
Gernot Friebes, 01-07-2010 11:37
Re:Pyrenomycet on wet wood
micros (scale=10 µm):

  • message #12176
Christian Lechat, 01-07-2010 12:38
Christian Lechat
Re:Pyrenomycet on wet wood
Hi gernot,
I think your fungus is Jahnula aquatica, species very common on submerged wood.
All the best ,
Christian
Gernot Friebes, 01-07-2010 14:52
Re:Pyrenomycet on wet wood
Hi Christian,

thank you very much!

Best wishes,

Gernot
Jacques Fournier, 01-07-2010 21:48
Jacques Fournier
Re:Pyrenomycet on wet wood
Hi Gernot,
Jahnula aquatica is a very distinctive fungus, and your very good photos make the identification unambiguous. Great!
Jacques
Gernot Friebes, 01-07-2010 22:15
Re:Pyrenomycet on wet wood
Thank you, Jacques! I think once you have found a name for this species, you won't forget it anymore.

Best wishes,

Gernot (who is looking forward to reading your work about aquatic Ascomycota)
Till Lohmeyer, 01-07-2010 23:09
Re:Pyrenomycet on wet wood
Cher tous,

I think, I have to thank Gernot for his question and Christian for his answer ... I have a file here named "Ignota genera", containing descriptions of Ascomycetes I could not place - for lack of time or knowledge - into a particular genus. The last entrance was a personal note on ... what just turned out to be Jahnula aquatica! It was found at the end of March this year on (very) wet wood in a swampy area in South Eastern Upper Bavaria. The species seems to have escaped the attention of German mycologists for a long time, although the type locality of Amphisphaeria aquatica Kirschstein & Plöttner (1906) was in Brandenburg.

Unfortunately my collection was very scanty, so I could not make an exsicccatum. But In this case I rely on my notes which are almost identical with Gernot's.

Best regards
Till
Gernot Friebes, 01-07-2010 23:16
Re:Pyrenomycet on wet wood
Hi Till,

it's always a nice feeling if you find something indeterminable and after some time somebody shows it in a forum. :)

I wonder if Jahnula aquatica is common in my area too, I'll keep my eyes open.

Best wishes,

Gernot