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27-04-2012 11:24

Stefan Blaser

Hello everybodyI tried to work out a name for a po

27-04-2012 19:12

Luc Bailly Luc Bailly

Bonjour à tous,Une récolte de bituniqué sur Ant

24-04-2012 14:21

Thomas Læssøe

I am hoping somebody can help with this reference

24-04-2012 00:29

Ismael Wind

Hi everyone. Today I found what i thought was an M

25-04-2012 10:47

Yannick Mourgues Yannick Mourgues

Bonjour à tous.Toujours dans mes aquatiks, je tro

21-04-2011 21:47

Björn Wergen Björn Wergen

Hi, today I have examined my collections from a

25-04-2012 10:59

Peter Thompson

Hello,Does anyone have a key to species from the E

24-04-2012 17:54

Baeza  Yajaira Baeza Yajaira

hi everyone im lookinf fot it: Denison, W.C. 1969

23-04-2012 13:21

Hans-Otto Baral Hans-Otto Baral

Can anybody help with the following reference?E.K.

19-04-2012 19:02

Baeza  Yajaira Baeza Yajaira

Hello dear Friends. me once again =) hopping that

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Cryptovalsa sp. ?
Stefan Blaser, 27-04-2012 11:24
Hello everybody

I tried to work out a name for a polysporous diatrypaceae. The best Literature I found and had access to was:
Vasilyeva and Stephenson 2005, Pyrenomycetes of the Great Smoky Mountains National Park II., Fungal Diversity 19:189-200

With this I tend to name my fungus Cryptovalsa mori (=Cryptovalsa nitschkei) or Cryptovalsa protracta alternatively.
I hope that someone could give me confirmation or else could help me on a better track if I'm wrong. I would also be glad to have more Literature on Cryptovalsa species, especially on the above, or Pictures.
Description: Stroma within the bark, penetrating the bark surface only by ostioles or through small cracks. Single Perithecia about 600-800 micometer diameter.
Micro: Spores allantoid, yellowisch-brown, (9)-10-11-(12) x 2.0-2.5, Ascal apparatus very faintly bluish in Iodine.
Ecology: Branch of Acer (platanoides or pseudoplatanus)

Thanks for any Input
Stefan

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Björn Wergen, 27-04-2012 11:49
Björn Wergen
Re : Cryptovalsa sp. ?
Hi,

this is surely Cryptovalsa protracta. I have found this species twice (2010, 2012), both on dead deciduous twigs.  

If you wish to have pics of it, I can send you via email.

regards,
björn
Stefan Blaser, 27-04-2012 13:00
Re : Cryptovalsa sp. ?
Hallo Björn

Thanks very much. I would like to have a picture of your collection and I would be very glad if you tell me with which Literature you identified your specimens. According to the Vasilyeva Article, Cryptovalsa protracta should have Spores <10 while C. mori would be the one with Spores up to 12 (What were your measurements?). I gather that there seems to be a bit of a mess in species delimitation in Cryptovalsa and Diatrypella.

Gruss
Stefan
Björn Wergen, 27-04-2012 20:24
Björn Wergen
Re : Cryptovalsa sp. ?
I think that I also have the Vasilyeva paper somewhere, but I didn't ever hear something about a C. mori. So I call the 32spored pyrenomycete with characteristic macroscopic features "C. protracta" with spores around 10-12x2-3µm. 

I will send you photos.

regards,
björn