Accès membres

Mot de passe perdu? S'inscrire

05-03-2010 18:17

Gernot Friebes

Hi, could you please help me with this Pleospor

05-03-2010 15:57

Beñat Jeannerot Beñat Jeannerot

Bonjour à tous, Ne vous inquiétez pas, je ne

04-03-2010 14:44

Roland Labbé

Voici un Disco inconnu pour nous. Merci de nous a

02-03-2010 10:26

Marja Pennanen

This is one of my top findings in the year 2009.

02-03-2010 10:26

Marja Pennanen

This is one of my top findings in the year 2009.

27-02-2010 16:08

Miguel Ãngel Ribes Miguel Ángel Ribes

I think this is Gorgoniceps viridula, isn't it?

24-02-2010 16:21

Jacky Launoy

Quél est le nom exacte: podospora perplexens (sel

23-02-2010 23:25

Alain BRISSARD

Trouvés sur rameau mort de genêt à balai (Sarot

23-02-2010 23:09

Alain BRISSARD

Bonsoir à tous Je fais à nouveau appel à votre

23-02-2010 22:15

Alain GARDIENNET Alain GARDIENNET

Bonsoir, est-ce que quelqu'un peut me dire si au

« < 1436 1437 1438 1439 1440 > »
Lophiostomataceae
Gernot Friebes, 05-03-2010 18:17
Hi,

could you please help me with this Pleosporales which I were not able to determine. It grew on a branch of Salix, the ascomata are opening slit-like and slightly immersed. The spores have a thick gel sheath as long as they are hyaline, when they are mature the sheath is gone and the spores are slightly brownish. They have 4-9 septa and are (32)38-51 x (9)9,5-10, the asci are bitunicate and 8-spored.

Best wishes,

Gernot

  • message #10625
Gernot Friebes, 05-03-2010 18:18
Re:Lophiostomataceae
micros (scale=10 µm)
  • message #10626
Gernot Friebes, 05-03-2010 18:21
Re:Lophiostomataceae
note the sheath
  • message #10627
Christian Lechat, 05-03-2010 19:07
Christian Lechat
Re:Lophiostomataceae
Hi Gernot,
your fungus ressembles to Lophiostoma massarioides (Sacc.) Holm., although Holm does not speak about ascospore with a sheath.
All the best,
Christian
Alain GARDIENNET, 05-03-2010 19:11
Alain GARDIENNET
Re:Lophiostomataceae
I thought at L. subcorticale (one septate generally ! , it isn't that) but the good proposition is given by Christian.
A very nice recolt.
Alain
Alain GARDIENNET, 05-03-2010 19:26
Alain GARDIENNET
Re:Lophiostomataceae
It would be a good idea to see all the descriptions around massarioides, appendiculatum, appendiculatum var littorale and why not alpigenum. Which one has sheath ? which one never has a sheath ? ... Material lacks and your recolt is an important recolt you does keep very carefully.
Alain
Gernot Friebes, 05-03-2010 20:13
Re:Lophiostomataceae
Hi Christian and Alain,

thank you very much for you help. Unfortunately I don't have any literature on L. massarioides, could you maybe scan me the description by Holm?

Best wishes,

Gernot
Christian Lechat, 05-03-2010 21:40
Christian Lechat
Re:Lophiostomataceae
Hi Gernot,
here is Holm's description
Have a nice evening
Christian
Gernot Friebes, 05-03-2010 22:13
Re:Lophiostomataceae
Hi Christian,

you are great, thank you very much! The description fits quite well and at least they mention that Saccardo reported a sheath, even though Holm & Holm didn't see one. In my collection I could observe a sheath in some ascomata while others didn't have one or very few. I think that a collection with mainly older, mature spores could lack a sheath and maybe it disappears in dead material.
Anyway a very nice find and I'm happy with the outcome!

Best wishes,

Gernot