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07-12-2025 22:43

Andreas Millinger Andreas Millinger

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07-12-2025 17:43

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Bonjour, je serais heureux de recueillir votre avi

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De la pasada semana en Galicia EspañaEn el suelo

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Viktorie Halasu Viktorie Halasu

Hello, would anyone have this article, please? An

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Malcolm  Greaves Malcolm Greaves

Is there an up to date Anthracobia key available?T

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Ethan Crenson

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Malcolm  Greaves Malcolm Greaves

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Buckwheat Pete

Hello everyone, does anyone know the genus Godroni

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Yellow disc on Quercus
Marc Detollenaere, 19-09-2018 23:11
Marc Detollenaere

Good evening everybody,


This afternoon we found some small yellow discs with dentate margin on leaves of Quercus.


The asci were cylindrical, thick walled, 120x14µ, 8-spored and IKI pos. Paraphyses were filiform and contained long refractive vacuoles. Spores measured 20-22x6-7µ and had 2 large guttules.The outer excipulum consisted of textura angularis.


I think it is something of the subfamily Dermateoideae.


Someone could help me further?

  • message #54697
  • message #54697
  • message #54697
  • message #54697
  • message #54697
Hans-Otto Baral, 20-09-2018 07:29
Hans-Otto Baral
Re : Yellow disc on Quercus
This looks much like Phaeohelotium epiphyllum (= Hymenosc. e.)
Marc Detollenaere, 20-09-2018 09:52
Marc Detollenaere
Re : Yellow disc on Quercus

Zotto;


You are right I have been misleaded by the general key in Nordic Macromycetes where the slightly brown excipulum and the angular cells brought me to the Dermateaceae.


But all the typical features of P epiphyllum were present including the reddening after damaging


Thanks


Marc