Accès membres

Mot de passe perdu? S'inscrire

05-12-2008 16:41

Nectriaceae on Diatrype bullata
Hans-Otto Baral Hans-Otto Baral

Hi together I have here Diatrype bullata on whi

31-03-2014 00:54

Cheilymenia stercorea - 50558
Roland Labbé

Bonjour ! Voici un disco que nous pensons être C

23-03-2014 21:38

Unknown species on carex?
Ralph Vandiest Ralph Vandiest

Hello,I found this species on carex species?  No

29-03-2014 01:32

Peziza near firesite
Nick Aplin

Salut à tous, I found this Peziza 28/3/2014 near

31-03-2014 00:02

Litterature
Yannick Mourgues Yannick Mourgues

Hi !I'am looking for :Syll. fung. (Abellini) 3: 47

29-03-2014 20:59

En hojas de Quercus rotundifolia
Javier Ormad Javier Ormad

¡Hola a todos! En hojas secas de Quercus rotundif

29-03-2014 00:06

Another strange fungus on Aruncus dioicus
Björn Wergen Björn Wergen

Hi friends,I have received a collection from Switz

29-03-2014 21:07

literature about Mycosphaerella
Björn Wergen Björn Wergen

Hi friends,I have a special question for you: Does

25-03-2014 22:19

Bibliografía
Tapia Fidel Tapia Fidel

Alguien me puede conseguir el siguiente articulo?Â

17-03-2014 21:22

Orbilia 'rosea' again?
Chris Yeates Chris Yeates

Bonsoir TousI have collected this Orbilia species

« < 1157 1158 1159 1160 1161 > »
Pseudonectria?
Björn Wergen, 22-03-2014 00:11
Björn WergenHi friends,

I have a collection from Braga, Portugal, on indetermined plant debris (very flat stems with hairs on the surface, I do not know what that is). On this substrate I have found a nectrioid species with a Volutella anamorph and Gibberella cyanogena with a Fusarium anamorph. According to Rossman 1999, Volutella is a common anamorph of the genus Pseudonectria, which unfortunately has one septated ascospores. Is there any other idea what this one can be?

Fruitbodies are about 200-260µm in diametre, orange-yellow and with prominent papilla, with a 7-15µm broad wall and 8spored asci about 70-90x6,5-8µm. Spores are 8,2-10,3x4-4,5µm, 2celled and with dotted surface. KOH negative.

Thanks in advance for any help.

regards,
björn
  • message #28367
  • message #28367
  • message #28367
  • message #28367
  • message #28367
  • message #28367
  • message #28367
  • message #28367
  • message #28367
Walter Gams, 22-03-2014 10:17
Walter Gams
Re : Pseudonectria?
Dear Björn, It seems that you have the rare teloeomorph of the very common Volutella ciliata. volutella is heterogeneous as shown by Gräfenhan et al. in Stud. Mycol. 68: 79-113. The teleomorph of Volutella s. str. was formerly in Cosmospora, but is now segregated and the generic name Volutella will be retained for these fungi. On the other hand, Volutella buxi is now in Pseudonectria buxi.  In a study of these fungi many years ago, Gary Samuels confused this fungus with the teleomorph of V. minima. A detailed description of the teleomorph with molecular study of an isolate would be worth while.
Björn Wergen, 22-03-2014 11:26
Björn Wergen
Re : Pseudonectria?
Dear Walter,

so can I send you the collection for further studies? I am very interested in this.

regards,
björn