Accès membres

Mot de passe perdu? S'inscrire

13-12-2025 17:26

Lachnaceae?
Buckwheat Pete

Hello everyone,I have a rather interesting ascomyc

13-12-2025 11:58

Diaporthe oncostoma?
Mirek Gryc

HiSupposedly this is a species that occurs quite o

12-12-2025 18:39

Similar to Pyrenopeziza deuncinata?
Mirek Gryc

Hello everyone.Macrofeatures similar to Mollisia b

09-12-2025 12:06

Hypobryon heterotropum
Andgelo Mombert Andgelo Mombert

Bonjour,Je recherche l'article concernant Hypobryo

07-12-2025 16:07

Ascomycet mit Sammelfruchtkörper.
Arnold Büschlen

Hallo, ich habe in einer Moos-Aufsammlung (epiphy

08-12-2025 21:04

Hymenoscyphus phyllogenus
Mark Stevens

"Hello everyone,I'm relatively new to microscopy (

08-12-2025 18:59

aff. Tricharina?
Lothar Krieglsteiner Lothar Krieglsteiner

.. found by a seminar-participant, I do not know t

08-12-2025 21:18

Nectriaceae
Buckwheat Pete

Hello everyone, Is it possible to at least approx

07-12-2025 17:43

Helvella
Malcolm Greaves Malcolm Greaves

This Helvella was in mixed woodland. Uniform cupul

08-12-2025 17:37

possibly related to Melanomma - on Abies
Lothar Krieglsteiner Lothar Krieglsteiner

20.6.25, on branch of Abies infected and thickened

« < 1 2 3 4 5 > »
Coprophilous Bionectriaceae?
Björn Wergen, 05-02-2013 14:33
Björn WergenHi there,

I have recently found another small pyrenomycete growing on dung of a dung pile, precisely on dead grass culms which are embedded in that dung. It has very small fruitbodies from about 0,08 mm diameter and some rigid hairs, which are 35-45µm long. Spores are 8-9x2,-3,2µm, with one central septation when mature, hyaline, smooth. Asci with 8 spores (uni/biseriate), 50-65x6-8µm, IKI -, but with visible apical apparatus. Paraphyses not seen. Wall 6-10mm thick, consisting of small polygonal cells, redbrown.

Any idea? I thought about a Bionectriaceae, but I did not find any matching species.

regards,
björn
  • message #21703
  • message #21703
  • message #21703
  • message #21703
  • message #21703
  • message #21703
Björn Wergen, 05-02-2013 21:03
Björn Wergen
Re : Coprophilous Bionectriaceae?
Probably a member of Niesslia is also possible...

By the way: does anybody know about a key for that genus? I am looking for it but without success.
Alain GARDIENNET, 05-02-2013 22:35
Alain GARDIENNET
Re : Coprophilous Bionectriaceae?
Hi Björn,
Did you test KOH ? It recalls me some Nectriella. Niesslia are darker (brown to black).

Alain
Björn Wergen, 06-02-2013 00:12
Björn Wergen
Re : Coprophilous Bionectriaceae?
Hi Alain,

what does KOH do with Nectriella? I will test this tomorrow.

regards björn
Alain GARDIENNET, 06-02-2013 08:00
Alain GARDIENNET
Re : Coprophilous Bionectriaceae?
Nectriella is (as a Bionectriaceae) KOH -. A positive reaction would signify that is Nectriaceae.
Your one seems to be closed to species like N. dakotensis.
Alain
Björn Wergen, 06-02-2013 21:50
Björn Wergen
Re : Coprophilous Bionectriaceae?
Hi Alain,

I have read the article about Hypocreales (Rossman et al., Studies in Mycology 42) and after using the key, I think this should really be N. dakotensis. This is quiet interesting.

Of course I will test KOH too.

Thanks again, Alain.

regards,
björn