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13-01-2022 16:33

Juuso Äikäs

An old Pyrenopeziza finding from my archive:These

13-01-2022 14:48

Juuso Äikäs

On August 2020 I found a group of Trichophaea hybr

11-01-2022 00:31

Valencia Lopez Francisco Javier

Hola amigos Tengo muchas dudas con esta especie, r

11-01-2022 14:34

Camille Mertens

Hello all.Hairy asco found a week ago on half rott

09-01-2022 09:37

Jacques Fournier Jacques Fournier

Hello forum, this is a tentative translation in E

10-01-2022 17:06

Ethan Crenson

Hello all, I think I have finally found Prolifero

04-06-2016 21:30

Bernard CLESSE Bernard CLESSE

Bonsoir à tous,Voici un gros Hymenoscyphus trouvÃ

07-01-2022 22:45

Viktorie Halasu Viktorie Halasu

Hello,last year I've found this Psilachnum on old

07-01-2022 15:59

Andgelo Mombert Andgelo Mombert

Bonjour, Sur branche morte de Quercus cerris, sur

07-01-2022 09:24

Viktorie Halasu Viktorie Halasu

Hello,last year I've collected a milky greyish-whi

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Pyrenopeziza rubi?
Juuso Äikäs, 13-01-2022 16:33
An old Pyrenopeziza finding from my archive:

These were growing on a dead Rubus idaeus cane at the turn of June and July 2020. 

There were just a few pics of the spores, asci in IKI and excipululm. The spores measure 7.9 - 10.4 × 2.1 - 2.6 µm.

Is this enough to determine this as P. rubi or are there other alternatives?
  • message #71426
  • message #71426
Hans-Otto Baral, 13-01-2022 17:31
Hans-Otto Baral
Re : Pyrenopeziza rubi?
P. rubi or P. escharodes - i cannot say. Both are described with marginal, appressed hairs.

There is an interesting iodine reaction when pretreated with KOH and wahsed with water: Lugol and probably also Melzer give a distinct blue at the margin!  I am not sure if this distinguishes rubi from escharodes.
Juuso Äikäs, 13-01-2022 18:10
Re : Pyrenopeziza rubi?
Ok, thanks for the info! I'll have to keep that in mind until I find this again.