Accès membres

Mot de passe perdu? S'inscrire

20-12-2025 10:49

Mirek Gryc

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

23-12-2025 08:27

Josep Torres Josep Torres

Hello.Small, yellowish ascomata, with very short a

23-12-2025 11:27

Louis DENY

bonjour forum,sur débris de bois de feuillu (acer

21-12-2025 09:32

Josep Torres Josep Torres

Hello.A tiny ascomycete found embedded in wood in

21-12-2025 21:32

Pol Debaenst

Hello, Garden, Burgweg 19, Veurne, BelgiumOn 10/1

22-12-2025 23:38

Patrice TANCHAUD

Bonsoir, récolte sur un mur en pierre, apothéci

21-12-2025 12:34

Castillo Joseba Castillo Joseba

me mandan el material seco de Galicia (España) 

22-12-2025 00:47

Patrice TANCHAUD

Bonsoir, récolte à proximité du milieu dunaire

21-12-2025 21:40

Isabelle Charissou

Bonjour, j'aimerais connaitre les références de

20-12-2025 23:08

Patrice TANCHAUD

Bonsoir, récolte sur sol sablonneux dans l'arriÃ

« < 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