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31-08-2025 17:32

Michel Hairaud Michel Hairaud

Bonjour, Pas d'identité trouvée pour cette réc

31-08-2025 19:41

Enrique Rubio Enrique Rubio

Hi to someone.I need to download this issue of Sve

31-08-2025 14:34

Thomas Flammer

I have found a Rutstroemia on abt. 2000 m on Alnus

29-08-2025 19:04

Thomas Flammer

Spores 21.2 - 26.2 x 8.3 - 11.3 µm - Q: 2.20 - 2.

30-08-2025 18:29

Joaquin Martin

Hi,I found this undetermined ascomycete on broadle

28-08-2025 17:24

Thomas Flammer

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29-08-2025 05:16

Francois Guay Francois Guay

I think I may have found the teleomorph of Dendros

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Asco on stromata of Rhytisma salicinum
Enrique Rubio, 05-08-2013 20:01
Enrique RubioHello again

This 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. 


Have you any idea?
Thanks again
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Hans-Otto Baral, 05-08-2013 21:45
Hans-Otto Baral
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
Enrique Rubio, 05-08-2013 22:07
Enrique Rubio
Re : Asco on stromata of Rhytisma salicinum
Thanks Zotto
Do you know where Huhtinen descibed the Ciborinia on Salix leaves?
Hans-Otto Baral, 05-08-2013 22:10
Hans-Otto Baral
Re : Asco on stromata of Rhytisma salicinum
You mean in which journal?

Here
Enrique Rubio, 05-08-2013 22:28
Enrique Rubio
Re : Asco on stromata of Rhytisma salicinum
Yes! I wanted this paper. Thanks

 
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
Hans-Otto Baral
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
Enrique Rubio
Re : Asco on stromata of Rhytisma salicinum
Yes. You are right. It's very possible