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18-03-2026 13:09

Khomenko Igor Khomenko Igor

I recently examined Celtis occidentalis branches

27-02-2026 11:21

Yannick Mourgues Yannick Mourgues

Hi to all. Here is a specie that can may be relat

18-03-2026 18:42

Gonzalez Garcia Marta

I have collected some lyre-shaped apothecia on the

18-03-2026 17:22

Katarina Pastircakova

Hi there,I'm looking for the following literature:

27-11-2025 15:41

Thomas Læssøe

Spores brownish, typically 4-celled; 26.8 x 2.4;

18-03-2026 11:52

Thomas Læssøe

https://svampe.databasen.org/observations/10493688

11-03-2026 17:36

Michel Hairaud Michel Hairaud

Bonjour, Je cherche des indices  pour cette réc

17-03-2026 10:40

Martine  Vandeplanque Martine Vandeplanque

Bonjour à tous.Chaque année en mars ou avril, il

17-03-2026 19:41

Bernard CLESSE Bernard CLESSE

Bonsoir à toutes et tous,Pourriez-vous m'aider à

12-03-2026 19:44

Enrique Rubio Enrique Rubio

Hi to everybody.Can you give me any suggestions ab

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Nectria on Salix
Jenny Seawright, 02-04-2015 22:41
Jenny SeawrightHello 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

  • message #34935
  • message #34935
  • message #34935
Christian Lechat, 03-04-2015 06:42
Christian Lechat
Re : Nectria on Salix
Hi Jenny,

 Are the ascospores ornamented or smooth?
Your fungus fits better Thelonectria discophora.

Best wishes,
Christian
Jenny Seawright, 03-04-2015 23:44
Jenny Seawright
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




  • message #34949
  • message #34949
Christian Lechat, 04-04-2015 06:03
Christian Lechat
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
Jenny Seawright, 04-04-2015 09:53
Jenny Seawright
Re : Nectria on Salix
Thank you very much Christian
Jenny