Collected on dead leaves of Betula nana (in bog), 20.08.2012.

The genus was identified with Munk (1957), the species by host (SMML DB), and compared with description in Sogonov (2008).

Perithecia spherical with long necks, to 0,5 mm in diameter, immersed in leaf tissue, necks protruding at the surface, to 1 mm long.
Asci spherical, with short stalk and truncate tip, near 25 x 13 mk; spores fusoid-ellipsoid, 1-celled, with acute ends, 12 (11-12,6) x 5 (4,7-5,4) (N=20).

On this subject, i am lacking these two works, may be anybody can share them with me:

Eriksson, O.E. 1992. The non-lichenized pyrenomycetes of Sweden. Btjtryck, Lund, Sweden, 208 pages.
Monod, M. 1983. Monographie taxonomique des Gnomoniaceae (Ascomycetes de l'ordre des Diaporthales). I. Beih. Sydowia 9: 1-315.?

Björn Wergen, 08-03-2013 12:56

Re : Ophiognomonia nana

Hi,

Yes, who ever has these articles, I would be very happy to have them too...

regards,
björn

Chris Yeates, 08-03-2013 15:51

Re : Ophiognomonia nana

Nina, Björn
for the Monod, check your emails ;-)
I too would be interested in the Eriksson . . . .

amitiés
Chris

Alain GARDIENNET, 08-03-2013 17:47

Re : Ophiognomonia nana

Hi,

Only one Gnomoniella is known on Betula leaves : G. nana.
 But your ascospores are slightly too long. But what could be else ?
Yes, Sogonov and al. have combined it, and it's a little surprising but scientifical, in Ophiognomonia.
 Alain
PS : Chris has been too quick for the doc :)

Luc Bailly, 08-03-2013 20:44

Re : Ophiognomonia nana

Hi Chris, and hi all,
I'd be interested in Monod's monography also.

Cheers - LUC.

Enrique Rubio, 08-03-2013 21:04

Re : Ophiognomonia nana

And me too, Chris
Thnks in advance
Enrique

Luc Bailly, 08-03-2013 23:34

Re : Ophiognomonia nana

I got it. Thanks, Chris.