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28-10-2025 15:37

Carl Farmer

I'd be grateful for any suggestions for this strik

03-11-2025 16:30

Hans-Otto Baral Hans-Otto Baral

Hello I want to ask you if you have found this ye

01-11-2025 09:14

Francis Maggi

Bonjour,Trouvé sur Xanthoria parietina à Valdebl

28-10-2025 19:33

Nicolas Suberbielle Nicolas Suberbielle

Bonjour à tous,Je voudrais votre avis sur cette r

31-10-2025 09:19

Lothar Krieglsteiner Lothar Krieglsteiner

Can somebody provide me with a file of:Rogerson CT

30-10-2025 03:53

Ethan Crenson

Hi all,  I would like an opinion on whether this

09-08-2025 13:13

Maria Plekkenpol Maria Plekkenpol

Hello,Yesterday I found these on burnt soil. Apoth

29-10-2025 19:02

Castillo Joseba Castillo Joseba

De la pasada semana en rama posiblemente de hayaPi

25-11-2016 13:54

Stephen Martin Mifsud Stephen Martin Mifsud

Hi, I found numerous seeds of Washingtonia robusta

28-10-2025 22:22

Bernard Declercq Bernard Declercq

Hello.I'm searching for the following paper:Punith

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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
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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!