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01-05-2012 22:00

bwergen bwergen

Hello,I have found a small pyrenomycete with black

11-05-2012 18:36

Bometon Javier

Buenas tardes a todos.Ascomas de hasta 3mm , copul

17-05-2012 16:56

Pierotti Alessio

Qualcuno degli amici del Forum ha l'articolo:Parbe

16-05-2012 17:02

Enrique Rubio Enrique Rubio

Hi againWhat do you think about these small (up to

17-05-2012 14:49

Uwe Lindemann Uwe Lindemann

Hello,I'm searching for the following paper:Galán

16-05-2012 23:39

Marja Pennanen

Hello,the snow has almoust melted away here. Near

16-05-2012 19:52

Nicolas VAN VOOREN Nicolas VAN VOOREN

Récolte à la base d'une tige morte d'Iris foeti

16-05-2012 20:09

Nicolas VAN VOOREN Nicolas VAN VOOREN

Récolté sur feuille morte, dégradée, d'Eryngiu

16-05-2012 00:02

Yannick Mourgues Yannick Mourgues

Récolté sur le plateau de l'Aubrac parmi des Ery

16-05-2012 11:26

Gilbert MOYNE

Bonjour,Besoin d'aide pour une petite espèce trou

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Phaeosphaeria subgenus Vagispora
bwergen, 22-02-2012 20:43
bwergenHi,

I have found a Phaeosphaeria on dead Poaceae stems with 5septated, 27-30x6-7,5µm spores. I have tried Shoemaker&Babcock and Leuchtmann and come to Phaeosphaeria larseniana, which has smaller spores (Shoemaker: 20-27x7-9µm). I am sure it is a species of subgenus Vagispora. Perhaps someone can help :)

I did not see a sheath. The spores are smooth.

regards,
björn
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I think it can be P. vagans with no longitudinal septa. P. vagans seems to be a very variable specimen...
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bwergen, 23-02-2012 14:56
bwergen
Re : Phaeosphaeria subgenus Vagispora
Here are some new photos, I am sure it is a dicote substrate, the fb are about 80-150µm broad and have a small ostiolus. Spores are permanently (I have 3 collections now) around 28-32x5,5-7,5µm, quiet too big and too pale for P. luctuosa, which has a similar length. Perhaps this photos will help by identification.

The interesting thing is that the spores have obviously 5 septa in most cases, but inside asci there are many with more septa, I have counted up to 9 septa in some cases). There are no longitudinal septa. 

regards,
björn

btw: I am always looking for literature about Phaeosphaeria, Leptosphaeria and allies (Massariosphaeria, Kalmusia, Paraphaeosphaeria etc.).
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