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22-02-2012 20:43

Björn Wergen Björn Wergen

Hi,I have found a Phaeosphaeria on dead Poaceae st

22-02-2012 20:48

Andreas Gminder Andreas Gminder

Dear collegues,when starting moist chamber culture

22-02-2012 13:33

Roland Labbé

Bonjour !J'ai récupéré certaines des photos et

19-02-2012 17:20

Mauricio Marin

Salut Un nouveau ramassage sur Pinus pinaster (an

19-02-2012 17:12

Neven Matocec Neven Matocec

Hi all!Could anyone help me with these three artic

19-02-2012 10:30

André COUDER André COUDER

Bonjour à tousJe suppose que ce sont des Cheilyme

17-02-2012 21:07

Hans-Otto Baral Hans-Otto Baral

Here I have an old collection (7.3.1993), from  L

17-02-2012 17:41

Enrique Rubio Enrique Rubio

Hi to all:I need some help for to identify these v

16-02-2012 15:42

Bernard Declercq Bernard Declercq

Hello everybody,Who can help me with a copy of fol

17-02-2012 18:03

Luc Bailly Luc Bailly

Bonjour à tous,Je trouve souvent des Ascochyta da

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Phaeosphaeria subgenus Vagispora
Björn Wergen, 22-02-2012 20:43
Björn WergenHi,

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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Björn Wergen, 23-02-2012 14:56
Björn Wergen
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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