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20-12-2025 23:08

Patrice TANCHAUD

Bonsoir, récolte sur sol sablonneux dans l'arriÃ

20-12-2025 15:47

Mirek Gryc

Hi.These grew on pine wood that was heavily covere

20-12-2025 10:49

Mirek Gryc

Hi. „I doubt it is possible to identify this ti

18-12-2025 21:17

Pol Debaenst

The identification took me to Byssonectria deformi

15-12-2025 07:09

Danny Newman Danny Newman

indet. Rutstroemiaceae sp. on unk. fallen leavesMc

19-12-2025 10:10

Patrice TANCHAUD

Bonjour, récolte réalisée en milieu dunaire, a

18-12-2025 17:23

Bruno Coué Bruno Coué

Bonjour,je serais heureux d'avoir votre avis sur c

18-12-2025 18:07

Margot en Geert Vullings

These plumes were found on rotten wood.They strong

17-12-2025 18:35

Michel Hairaud Michel Hairaud

Bonjour à tous/Hi to everyone I am passing along

21-11-2025 10:47

François Freléchoux François Freléchoux

Bonjour,Peut-être Mollisia palustris ?Trouvée su

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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