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07-03-2026 13:06

éric ROMERO éric ROMERO

Bonjour tous, Sur cône d'épicea fortement imbu,

05-03-2026 16:30

François Bartholomeeusen

Dear forum members, On the 2nd of February 2026,

06-03-2026 09:41

Alain GARDIENNET Alain GARDIENNET

Hi forum, I'm now looking for another reference c

28-02-2026 11:05

Yanick BOULANGER

Bonjour à tousLe 24/02/2026 à Montmacq, devant m

06-03-2026 17:51

William Slosse William Slosse

Good evening all,On March 4, 2026, I found the fol

05-03-2026 10:07

Hulda Caroline Holte

Hello, I found and collected this species growing

05-03-2026 19:29

William Slosse William Slosse

Good evening everyone,On March 4, 2026, I found th

19-02-2026 17:49

Salvador Emilio Jose

Hola buenas tardes!! Necesito ayuda para la ident

03-03-2026 20:34

Miguel Ãngel Ribes Miguel Ángel Ribes

Good eveningThese small, amphora-shaped perithecia

28-02-2026 11:54

Alain GARDIENNET Alain GARDIENNET

Hi forum,Is anyone aware if the 1936 edition of Si

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Bright orange stalked asco
Carl Farmer, 28-10-2025 15:37
I'd be grateful for any suggestions for this striking orange-red asco found on a recumbent oak trunk in Cowal, Scotland. I've not been able to find a match in any books or online. UK Fungi forum members are stumped by it and suggested I post it here.

I'm not very good at microscopy but the largest spores in a squash were about 5.3-6.7 x 2.2-2.6 mu, elliptical, hyaline, 8 per ascus. Paraphyses hyaline and of even width.

With many thanks for any help,
Carl
  • message #83756
  • message #83756
  • message #83756
  • message #83756
  • message #83756
Thomas Læssøe, 28-10-2025 16:17
Re : Bright orange stalked asco
Guepiniopsis has basidia
Lothar Krieglsteiner, 28-10-2025 17:52
Lothar Krieglsteiner
Re : Bright orange stalked asco
but on picture 5 (micro-foto 2) I see asci.
Michel Hairaud, 28-10-2025 18:57
Michel Hairaud
Re : Bright orange stalked asco
Hi Carl, 
Thank you for this first post of yours on the Ascofrance forum. Feel welcome here. 

Indeed an interesting species ! With apparently an Hymenoscyphus habit. 

Some more information would help for a placement in a supraspecies entity, also micro pictures with a x100 magnification. 
Can you picture the medulla and ectal cells ? Can you also test a iodine reaction on Ascus apex 

Amitiés
Michel



Carl Farmer, 03-11-2025 18:57
Re : Bright orange stalked asco
Ben Mitchell, who was present when the fungus was found and who lives nearby, has been back to get another sample and taken some better microscope photos than I could, including one showing the ascus tip in Lugol's iodine. This has certainly made it darker but without much of a blue tinge. It has made the spores blue though.

The photos would have to be compressed in size and quality to meet the forum rules, so I've put them online at http://www.abrec.org.uk/OrangeAsco/orange-asco.htmjavascript:mctmp(0); to give best visibity of detail. Hope this is allowed.

Neither Ben nor I nor anyone else I know is very experienced in fungal microscopy!