Accès membres

Mot de passe perdu? S'inscrire

05-02-2013 14:33

Björn Wergen Björn Wergen

Hi there,I have recently found another small pyren

05-02-2013 16:41

Michel RIMBAUD

Bonjour,Récolté sur un vieux stroma érompant de

04-02-2013 16:13

Nina Filippova

There is yet another species related to sphagnum h

03-02-2013 13:43

Björn Wergen Björn Wergen

Dear readers,Does anybody have HAFELLNER (1979) in

01-02-2013 18:48

Alain BRISSARD

Bonsoir à tousVoilà plusieurs jours que je m'att

20-07-2012 16:25

Eduardo Benguría

Buenas tardesEste Hypoxylon está cogido en Teneri

02-02-2013 10:30

Nina Filippova

With the key in Nordic Macromycetes this specimen

02-02-2013 16:06

Gilbert MOYNE

Bonjour,Voici un petit Octospora qui me pose bien

03-02-2013 13:10

Ueli Graf Ueli Graf

Hallo, ich habe diesen Asco gestern gefunden auf e

03-02-2013 12:11

Nicolas VAN VOOREN Nicolas VAN VOOREN

Bonjour.J'ai des soucis pour identifier ce Lampros

« < 1190 1191 1192 1193 1194 > »
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