03-03-2026 20:34
Miguel Ángel Ribes
Good eveningThese small, amphora-shaped perithecia
01-03-2026 18:02
Francois Guay
I found this mystery Helotiales on an incubated le
28-02-2026 14:43
Alain GARDIENNET
A new refrence desired :Svanidze, T.V. (1984) Novy
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Robin Isaksson
Hi! This species i se from time to time in the
27-02-2026 17:51
Michel Hairaud
Bonjour, Quelqu'un peut il me donner un conseil p
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Mathias Hass
Hi, Found this on Betula, rather fresh fallen twi
Nectria on Salix
Jenny Seawright,
02-04-2015 22:41
Hello all, I found a patch of Nectria on a living branch of Salix cinerea in damp woodland - perithecia yellow becoming orange and then red, slightly darker at the apices, the surfaces appearing rough but not strongly warted. Spores were hyaline, 1-septate, (15)17-20 x 7µm.
Using Ellis & Ellis Nectria veuillotiana seemed a good possibilty until I compared the perithecia with those shown here:
http://www.ascofrance.fr/search_recolte/2149
Once again assistance appreciated!
With regards,
Jenny
Christian Lechat,
03-04-2015 06:42
Re : Nectria on Salix
Hi Jenny,
Are the ascospores ornamented or smooth?
Your fungus fits better Thelonectria discophora.
Best wishes,
Christian
Are the ascospores ornamented or smooth?
Your fungus fits better Thelonectria discophora.
Best wishes,
Christian
Jenny Seawright,
03-04-2015 23:44
Re : Nectria on Salix
Hi Christian - my first reply disappeared so this is the next attempt!
Thank you - the texture and apices of the AscoFrance images of Thelonectria discophora correspond perfectly with what I was seeing down the microscope.
"Are the ascospores ornamented or smooth"
I wasn't quite sure what I should be looking for but have added some images in Cotton Blue.
Attempted images of a perithecia section - fortunately someone has kindly offered to do a 'proper' section for me......
With regards,
Jenny
Thank you - the texture and apices of the AscoFrance images of Thelonectria discophora correspond perfectly with what I was seeing down the microscope.
"Are the ascospores ornamented or smooth"
I wasn't quite sure what I should be looking for but have added some images in Cotton Blue.
Attempted images of a perithecia section - fortunately someone has kindly offered to do a 'proper' section for me......
With regards,
Jenny
Christian Lechat,
04-04-2015 06:03
Re : Nectria on Salix
Jenny,
your image (from left) suggests that the ascospores observed in water are spinulose. This characteristic fits well to T. discophora.
Best gegards,
Christian
your image (from left) suggests that the ascospores observed in water are spinulose. This characteristic fits well to T. discophora.
Best gegards,
Christian
Jenny Seawright,
04-04-2015 09:53
Re : Nectria on Salix
Thank you very much Christian
Jenny
Jenny