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21-03-2026 15:13

MYXOMYCETICOLOUS FUNGI
Lepista Zacarias

Hello everyone, Does any one know of any literatu

21-03-2026 22:59

Hysteriaceae ??
Petr Soucek

Good evening, I would appreciate some advice on th

20-03-2026 12:53

Eutypa spec. (?)
Stefan Blaser

Hello everybody, In the field, from distance, my

20-10-2017 09:23

Hymenoscyphus ¿calycinoides?
Garcia Susana

Este otro crecía en el mismo trocito de madera qu

20-03-2026 16:16

Pseudomassaria-like on Cornus alba
Edvin Johannesen Edvin Johannesen

These 0.5 mm diam. acervuli were breaking through

19-03-2026 19:34

Xylariaceae? on Carpinus betulus wood
Filip Fuljer Filip Fuljer

Hello everyone,a few days ago I collected this str

19-03-2026 18:25

Myriosclerotinia curreyana?
William Slosse William Slosse

Good evening everyone, On 18/03/26 I found a few

17-03-2026 10:09

Lasiobelonium corticale ?
François Freléchoux François Freléchoux

Bonjour, Voici la description rapide d'un petit d

19-03-2026 15:58

"Lasiosphaerioid"
Stefan Blaser

Hello everybody, I hope for some hints... Macro:

19-03-2026 17:50

Massarina on Corylus
Enrique Rubio Enrique Rubio

Hi to everybodyThese thiny, blackish pseudothecia

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Valsa/Cytospora pruinosa?
Karl Soler Kinnerbäck, 24-03-2021 12:22
This species was found on a branch of Fraxinus excelsior, Uppsala, Sweden, march. 

Spores 15-19 x 4-5

I read in Ellis Ellis about Valsa pruinosa and it seemed like a good candidate.

Does anyone know if this is correct or is it perhaps another species?
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Vera Hayova, 25-03-2021 00:24
Re : Valsa/Cytospora pruinosa?
Yes, it is.
In external appearance it looks different from many other species of Valsa/Cytospora as it has no discs, only remnants of ectostroma.
Karl Soler Kinnerbäck, 25-03-2021 20:51
Re : Valsa/Cytospora pruinosa?
Thanks Vera!

Can you recommend any good article or other literature where I can read about this species?
I have not found anything myself.

Karl
Vera Hayova, 25-03-2021 22:49
Re : Valsa/Cytospora pruinosa?
Hi Karl,

Many years ago, in 1998, I published info on this species in IMI Descriptions, under prioritized at that time name Valsa cypri (now Cytospora pruinosa). You can see it attached.
I am not aware of any more recent publications. The earlier ones you can find therein.

Vera
Karl Soler Kinnerbäck, 26-03-2021 08:25
Re : Valsa/Cytospora pruinosa?
Hi Vera,

Thanks again! Very appreciated.

Karl