Accès membres

Mot de passe perdu? S'inscrire

23-05-2026 18:57

Sylvie Le Goff

Bonjour à tousRécolté sur une branchette de Sal

23-05-2026 11:44

Charles Grapinet Charles Grapinet

Hello, I am having trouble identifying this copro

23-05-2026 23:53

Moreno Miriam

Bonjour ! Je travaille sur mon mémoire de master

22-05-2026 14:44

Lothar Krieglsteiner Lothar Krieglsteiner

in unripe condition citrine yellow, then soon fadi

22-05-2026 21:35

Steve Clements

Bonjour, I expected this find on old wood on our

22-05-2026 18:12

Lothar Krieglsteiner Lothar Krieglsteiner

... in moist chamber from Portugal.As the fungus s

22-05-2026 20:08

Ethan Crenson

Hello all,  Yesterday in NYC I was visiting an e

11-01-2022 16:36

Jason Karakehian Jason Karakehian

Hi does anyone have a digital copy of Raitviir A (

20-05-2026 17:47

Margot en Geert Vullings

We found this Mollisia on dead Juncus stems mown l

22-05-2026 14:47

Gernot Friebes

Hi,superficial ascomata collected on bark of a liv

« < 1 2 3 4 5 > »
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