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23-07-2013 22:15

Björn Wergen Björn Wergen

Hi there,I have found this small valsoid pyrenomyc

21-07-2013 14:57

Marja Pennanen

These are about 0,2 mm wide.The spores are about 1

23-07-2013 07:25

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Good morning,could anyone send me this article?Svr

04-07-2013 12:32

Malcolm  Greaves Malcolm Greaves

This Cordyceps was growing from a fly which should

20-07-2013 19:25

Joop van der Lee Joop van der Lee

Found on horse dung.I have looked into the differe

19-07-2013 23:13

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Good evening,I determinated this Ascobolus as A. v

17-07-2013 17:03

Jean-Louis JALLA Jean-Louis JALLA

Quelqu'un a t'il une idée, je "sèche"...Sur une

19-07-2013 12:32

Björn Wergen Björn Wergen

Hello there,I was asking me if someone has some of

18-07-2013 23:26

Joop van der Lee Joop van der Lee

Found on horse dung, surprised to find this I did

19-07-2013 05:00

Nina Filippova

I see that Ombrophila's could not be solved very e

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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