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31-03-2010 03:38

Roland Labbé

Bonjour ! Voici un disco, probablement un Wilco

30-03-2010 09:59

VASILEIOS KAOUNAS

It was found in houmos, searching for ipogei fungh

30-03-2010 03:16

Milanka Tanaskovic

Bonjour à tous, Est-ce-que quelques-uns parmi vo

29-03-2010 01:30

Miguel Ãngel Ribes Miguel Ángel Ribes

Good night I have this black asco on Agave amer

28-03-2010 18:43

Nicolas VAN VOOREN Nicolas VAN VOOREN

Il reste des places pour la session Ascomycètes,

27-03-2010 12:57

Gernot Friebes

HI, I found this pyrenomycet on the bark of a b

27-03-2010 09:45

Alain GARDIENNET Alain GARDIENNET

Bonjour à tous, Je suis à la recherche d'infor

26-03-2010 07:15

christian Deconchat

bonjour, un collègue a trouvé dans le pays b

25-03-2010 18:10

christian Deconchat

il y a près d'un an, un message indiquait qu'à l

25-03-2010 18:10

christian Deconchat

il y a près d'un an, un message indiquait qu'à l

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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.