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Mot de passe perdu? S'inscrire

12-04-2026 17:56

Seeking genus for 1 – 3 septate spored asco. on herb Nepteta cataria (Mint).
Hardware Tony Hardware Tony

Found on dead stems in February earlier this year

12-04-2026 15:52

Anamorph on Salix
Gernot Friebes

Hi,I'm looking for help with this anamorph collect

12-04-2026 12:22

Unknown anamorph on Primula eliator
William Slosse William Slosse

In a dune grassland in Oostduinkerke (Belgium), on

11-04-2026 15:45

Article search - Octospora ithacaensis
Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Please, could anyone send me this paper?Moyne G.,

11-04-2026 13:34

Requesting help with Dasyscyphella sp. ID
Artem Ptukha

Hello, I am seeking assistance with the identific

11-04-2026 10:42

Una para ID
Castillo Joseba Castillo Joseba

Me mandan el material de Galicia, España, recolec

11-04-2026 10:19

Bientôt, un nouveau livre important
Michel Hairaud Michel Hairaud

Chers amis d'Ascofrance , voici une très bonne no

11-04-2026 10:10

An important new book
Michel Hairaud Michel Hairaud

Dear Ascofrance members, here is some very good ne

10-04-2026 23:22

Pyreno on Phragmites australis
Gernot Friebes

Hi,ascospores are 1- to 3-septate, approximately 

10-04-2026 15:51

Botrytis ficariarum & Peronospora ficariae?
William Slosse William Slosse

Hello everyone, On 08/04/26, I found a growth sit

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Valsa?
Björn Wergen, 23-07-2013 22:15
Björn WergenHi there,

I have found this small valsoid pyrenomycete growing on dead attached Carpinus twigs. For me, it is very strange for being a member of Valsa, as there are no visible ostioles embedded in a grey stromatic mass. Perithecia are arranged in circles.

Microscopically it has allantoid, hyaline, one celled spores of 8-10x1,8-2,4µm. Asci with a distinct apical apparature staining faintly red in Congo. The fruitbody reminds me on some Wuestneia findings...

Any ideas?

All the best,
björn
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Alain GARDIENNET, 24-07-2013 08:26
Alain GARDIENNET
Re : Valsa?

Hi Björn
 Very strange. Are you sure of Carpinus ?
Any Cystospora on the same twig ? 
Alain
Björn Wergen, 24-07-2013 09:46
Björn Wergen
Re : Valsa?
Hi Alain,

I am not that sure about Carpinus, it can also be Fagus. But I did not see any Cytospora on any twig I had collected.

In all Valsa collections I hadn't ever had such small spores (<10µm).

regards,
björn
Alain GARDIENNET, 24-07-2013 10:11
Alain GARDIENNET
Re : Valsa?
Valsa ceratosperma is perhaps possible : ascospores 6.5-10 x 2-2,5 µm. It has been seen on Betula, Quercus, Malus...
But beeks are longer .

Alain