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19-09-2018 23:11

Marc Detollenaere Marc Detollenaere

Good evening everybody, This afternoon we found s

14-09-2018 21:14

Marc Detollenaere Marc Detollenaere

Hello forum, On rabbit dung I discovered a number

18-09-2018 15:33

Chris Yeates Chris Yeates

Bonjour tous Normally I steer clear of this daunt

17-09-2018 08:17

Angel Pintos Angel Pintos

Hello, anybody has?.Moore G (1998) A comparison of

13-09-2018 13:04

Edvin Johannesen Edvin Johannesen

I have collected a "propolioid" specimen on large

13-09-2018 22:47

joseph Bartolome

Bonjour depuis 2017 je fais des photos d Asco ,mai

06-09-2018 08:57

Dragiša Savic

Is this Peziza aurata?I found it on the ground wit

06-03-2018 10:40

Gernot Friebes

Hello,this one is unknown to me and before I delve

13-09-2018 16:49

Blasco Rafael Blasco Rafael

Hola a ver si me pueden ayudar con esta Peziza, es

06-09-2018 09:50

Castillo Joseba Castillo Joseba

De ayer en kk de vacuno.Pensé en Cheilymenia, 

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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