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16-11-2025 21:09

Hyphomycete on twig of abies
Robin Isaksson Robin Isaksson

Anyone recognize this acc. to pictures.? Found on

17-11-2025 21:46

Lachnum impudicum
Philippe PELLICIER

Bonjour,Récolté sur bois pourrissant de feuillu

17-11-2025 21:57

Hyaloscypha fuckelii var. alniseta
Philippe PELLICIER

Bonjour,Récolté sur bois de feuillu mort dur, no

17-11-2025 19:14

Cheilymenia crucipila
herman lambert

Apothécie discoïde 0.6 cm diam., orangeFace hymÃ

14-11-2025 16:26

Small species on Cytisus scoparius
Marian Jagers Marian Jagers

Hello everyone, On dead wood of Cytisus scoparius

15-11-2025 23:22

Hymenoscyphus macroguttatus? on Phytolacca
Mario Filippa

Hello,this is what I think to be Hymenoscyphus mac

15-11-2025 20:25

Cryptosphaeria ligniota?
Riet van Oosten Riet van Oosten

Hello, Found by Laurens van der Linde, Nov. 2025

15-11-2025 09:21

Anamorph on Buxus.
Josep Torres Josep Torres

Hello.An anamorph resembling Capronia is sprouting

14-11-2025 18:31

literature request
Lothar Krieglsteiner Lothar Krieglsteiner

Hello,can somebody provide me with a file of:Rothe

12-11-2025 21:47

sp en restos de poda
ruiz Jose

Hola a todos, me envían esta colección en resto

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Orange disks
Leif Goodwin, 14-10-2023 11:29
This summer I found some cup fungus on soil with acer and black poplar. I struggled to get a spore print so only got a few spores. The asci and paraphyses are shown in Melzers, the spores in Lacto Cotton Blue. The disks are up to 2 cm wide. 

Someone suggested a Purpureodiscus species e.g. P. isabellinus. 

Help appreciated.
  • message #77143
  • message #77143
  • message #77143
Nicolas VAN VOOREN, 22-10-2023 11:19
Nicolas VAN VOOREN
Re : Orange disks
Macroscopically it looks like Purpureodiscus subisabellinus, but you should show some mature ascospores (in water). They measure 18.5-23.5 × 11-13 µm and show bipolar spore granules. The amyloid reaction of asci is only visible on the wall (W type), sometimes difficult to see.
Leif Goodwin, 13-11-2023 18:43
Re : Orange disks
Thank you for taking the time to reply, and apologies for my late response. I have given the specimen to someone who will amplify the ITS region of the DNA and then have it sequenced. When he returns it, I will try and find some mature spores. Hopefully the DNA sequencing will give us an answer, but sadly DNA does not always amplify, possibly because the primers are not ideal for ascos.