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26-05-2011 20:31

Yellow pyreno
Enrique Rubio Enrique Rubio

Dear friends: Last week I have collected this str

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Yellow pyreno
Enrique Rubio, 26-05-2011 20:31
Enrique RubioDear friends:
Last week I have collected this strange fungus that makes yellowish and small (3 x 1 mm) stromata erumpent from bark on branches of a dead tree in a sunny place (maybe Quercus petraea or Fraxinus).
Perithecia are ostiolate and up to 0.5 mm in diameter. Inner stroma yellowish orange.
These ascomata remember me the strange tropical pyrenemicetous fungi that Christian Lechat show us.
  • message #15374
Enrique Rubio, 26-05-2011 20:32
Enrique Rubio
Re:Yellow pyreno
Asci maybe bitunicate, 8-spored. Spores hyaline latter olive-brown, muriform.
  • message #15375
Enrique Rubio, 26-05-2011 20:33
Enrique Rubio
Re:Yellow pyreno
Hypermature ascospores form hyaline and elipsoid microconidia.
Many thanks for help me again
Enrique
  • message #15376
Alain GARDIENNET, 26-05-2011 21:11
Alain GARDIENNET
Re:Yellow pyreno
Yes, it's for Christian.
Christian ça me rappelle ce que j'avais trouvé sur Robinia à Bèze (mais jamais trouvé mature).
Enrique, are you sure it's a bitunicate ?
Have you made KOH test ?
Alain
  • message #15377
Christian Lechat, 26-05-2011 21:47
Christian Lechat
Re:Yellow pyreno
Hi Enrique , Alain,
I think it is not the same species than yours, Alain, your specimen is Pleonectria virens (Harkn.) Hirooka, Rossman & P. Chaverri, comb. nov. (ined).
Enrique, maybe you would have to search towards the genus Thyridium, but I have no certainty, it is only an idea.

Best wishes
Christian
Enrique Rubio, 27-05-2011 17:55
Enrique Rubio
Re:Yellow pyreno
Many thanks Alain and Christian. I'm not sure the asci are bitunicate and the KOH reaction is negative.
Enrique
Björn Wergen, 21-12-2017 23:28
Björn Wergen
Re : Yellow pyreno
Mattirolia roseovirens, if not yet named.
Regards,
Björn
Hermann Voglmayr, 23-12-2017 11:25
Hermann Voglmayr
Re : Yellow pyreno
The actual name of which is Thyronectria roseovirens.
Regards Hermann