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29-06-2016 18:06

Elisabeth Stöckli

Bonjour,Trouvé sur branches mortes cortiquées de

14-11-2025 16:26

Marian Jagers Marian Jagers

Hello everyone, On dead wood of Cytisus scoparius

17-11-2025 21:46

Philippe PELLICIER

Bonjour,Récolté sur bois pourrissant de feuillu

20-11-2025 14:14

Mick Peerdeman

Found on the leaves of 'Juglans regia' in the Neth

20-11-2025 13:07

Mick Peerdeman

In January i found these black markings on the dea

20-11-2025 12:38

Mick Peerdeman

Dear all,Last week i stumbled upon a leaf of ilex

19-11-2025 23:21

carl van den broeck carl van den broeck

Dear guestIn Waardamme, Belgium, I found dozens of

19-11-2025 20:51

Andreas Millinger Andreas Millinger

Good evening,found this species on a felled trunk

19-11-2025 13:04

Bruno Coué Bruno Coué

Bonjour,je  sollicite votre avis pour la récote

18-11-2025 18:26

David Malloch David Malloch

I am trying to locate the article, Müller, E. 195

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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!