21-07-2013 14:57
Marja PennanenThese are about 0,2 mm wide.The spores are about 1
23-07-2013 07:25
Zuzana Sochorová (Egertová)Good morning,could anyone send me this article?Svr
20-07-2013 19:25
Joop van der LeeFound on horse dung.I have looked into the differe
19-07-2013 23:13
Zuzana Sochorová (Egertová)Good evening,I determinated this Ascobolus as A. v
18-07-2013 23:26
Joop van der LeeFound on horse dung, surprised to find this I did
19-07-2013 05:00
Nina FilippovaI see that Ombrophila's could not be solved very e
Valsa?
Björn Wergen,
23-07-2013 22:15
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
Alain GARDIENNET,
24-07-2013 08:26
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
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
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
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
But beeks are longer .
Alain