20-05-2025 22:15
Francois Guay
I found this ascomycete at the base of a dead fern
30-05-2025 17:54
Louis DENYHello forum!Touvé près de Belfort, altitude 350m
31-05-2025 00:51
Ethan CrensonHello, Last week in New York City this Orbilia wa
30-05-2025 17:55
Louis DENYHello forum!Touvé près de Belfort, altitude 350m
30-05-2025 12:53
Gernot FriebesHi,I'm struggling to find a name for this species.
28-05-2025 21:19
Terje KristiansenThe rose is intertwined with black elderberry.Prob
Phaeosphaeria subgenus Vagispora
Björn Wergen,
22-02-2012 20:43
Hi,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...
Björn Wergen,
23-02-2012 14:56
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.).
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.).
