11-02-2026 22:15
William Slosse
Today, February 11, 2026, we found the following R
11-02-2026 19:28
Lothar Krieglsteiner
on small deciduous twig on the ground in forest wi
25-04-2025 17:24
Stefan BlaserHi everybody, This collection was collected by JÃ
10-02-2026 17:42
Bernard CLESSE
Bonjour à toutes et tous,Pourriez-vous me donner
10-02-2026 18:54
Erik Van DijkDoes anyone has an idea what fungus species this m
09-02-2026 20:10
Lothar Krieglsteiner
The first 6 tables show surely one species with 2
09-02-2026 14:46
Anna KlosGoedemiddag, Op donderdag 5 februari vonden we ti
02-02-2026 21:46
Margot en Geert VullingsOn a barkless poplar branch, we found hairy discs
Asco on stromata of Rhytisma salicinum
Enrique Rubio,
05-08-2013 20:01
Hello againThis spring we have found this strange fungus, perhaps close to the genus Ciboria, growing on old stromata of Rhytisma salicinum on decaying leaves lying on the ground of Salix sp. at 1600 m of altitude. At the same place thay are many stromata with the ascomata of Rhytisma salicinum hanging on the branches of Salix.
This fungus was previously collected in another far place by our friend A. Román  and was showed in Ascofrance  http://www.ascofrance.com/search_forum/7900.
The ascospores are 2-nucleate, with polar dextrinoid bodys and late they seem to make sphaeric microconidia. Asci with apical pore of the Sclerotinia-type, with croziers. Medullary excipulum of textura intricata. Ectal excipulum globulosa, not blueing in IKI.  The paraphyses have not conspicuous Vb's.Â
Have you any idea?
Thanks again
Hans-Otto Baral,
05-08-2013 21:45
Re : Asco on stromata of Rhytisma salicinum
Very interesting!
On Salix leaves exist with a similar spore size:
Moellerodiscus rathenowiana
Sclerotinia foliicola (Cash & Davidson) Whetzel
Ciborinia wisconsiensis  Batra
Not sure what Huhtinen 1985: 494 described as Ciborinia sp. from N-Quebec, on a flat sclerotium on salix leaves. Did he mistake the Rhytisma for a sclerotium??
Zotto
On Salix leaves exist with a similar spore size:
Moellerodiscus rathenowiana
Sclerotinia foliicola (Cash & Davidson) Whetzel
Ciborinia wisconsiensis  Batra
Not sure what Huhtinen 1985: 494 described as Ciborinia sp. from N-Quebec, on a flat sclerotium on salix leaves. Did he mistake the Rhytisma for a sclerotium??
Zotto
Enrique Rubio,
05-08-2013 22:07
Re : Asco on stromata of Rhytisma salicinum
Thanks Zotto
Do you know where Huhtinen descibed the Ciborinia on Salix leaves?
Do you know where Huhtinen descibed the Ciborinia on Salix leaves?
Hans-Otto Baral,
05-08-2013 22:10
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Enrique Rubio,
05-08-2013 22:28
Re : Asco on stromata of Rhytisma salicinum
Yes! I wanted this paper. Thanks
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Really it's very difficult to know if Huhtinen's fungus is the same because he draws roundish guttules at the poles (the mine have only small guttules) and the ectal excipulum is said built by a textura angularis whereas in our fungus is clearly globulosa.
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Really it's very difficult to know if Huhtinen's fungus is the same because he draws roundish guttules at the poles (the mine have only small guttules) and the ectal excipulum is said built by a textura angularis whereas in our fungus is clearly globulosa.
Hans-Otto Baral,
05-08-2013 22:33
Re : Asco on stromata of Rhytisma salicinum
I assume he studied in the dead state, so globulosa may turn to angularis and LBs fuse :-)
Enrique Rubio,
05-08-2013 22:40
Re : Asco on stromata of Rhytisma salicinum
Yes. You are right. It's very possible