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09-04-2009 01:54

Godronia uberiformis
Stip Helleman Stip Helleman

Bonjour à tout This is the first record for the

08-04-2009 22:05

Picoa lefebvrei???
VASILEIOS KAOUNAS

Found hypogeous under of Helianthemum sp.

08-04-2009 20:46

Asco inconnu
Enrique Rubio Enrique Rubio

Purrait quelqu'un me donner une opinion sur cet pe

08-04-2009 18:25

Three Ascomycetes
Gernot Friebes

Hello, I found some Ascomycetes which I am not

07-04-2009 22:43

Neournula pouchetii de saison ...
Yannick Mourgues Yannick Mourgues

Bonsoir. Les cédraies du sud commencent à donne

07-04-2009 16:47

Lophiostomataceae
Alain GARDIENNET Alain GARDIENNET

Bonjour, j'ai récolté sur Salix cet asco aux air

07-04-2009 11:16

Dumontinia ulmariae ?
bernard BOUSQUET

Bonjour, Tous les printemps, début avril, en p

06-04-2009 19:32

Asco sur bois de Tilia
Enrique Rubio Enrique Rubio

J'amairais conaitre votre opinion sur cet petit as

06-04-2009 18:49

Hypomyces rosellus
Miguel Ãngel Ribes Miguel Ángel Ribes

Hi again Is this Hypomyces rosellus? Please, se

06-04-2009 16:42

Hymenoscyphus albidus
Benoit Marçais

Bonjour, Je vous contact pour savoir si vous au

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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
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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