Accès membres

Mot de passe perdu? S'inscrire

02-02-2026 14:55

Lichénicole sur Lobaria
Andgelo Mombert Andgelo Mombert

Bonjour,Sur thalle de Lobaria pulmonaria.Conidiome

02-02-2026 14:33

Lichénicole sur Peltigera
Andgelo Mombert Andgelo Mombert

Bonjour,Sur le thalle de Peltigera praetextata, ne

31-01-2026 10:22

Lichenicole hypocreale
Michel Hairaud Michel Hairaud

Bonjour, Cette hypocreale parasite en nombre les

02-02-2026 09:29

Scutellinia hirta ? sur souche moussue
Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pour cette récolte de 2

01-02-2026 19:29

Lambertella sur Olea
Nicolas Suberbielle Nicolas Suberbielle

Bonjour, Marie-Rose D'Angelo (Société Mycologiq

30-01-2026 22:49

Calycina ?
éric ROMERO éric ROMERO

Bonjour tous, Récolté dans les Vosges le 22/10/

31-01-2026 09:17

Small hairy discs on Castanea
Marc Detollenaere Marc Detollenaere

Dear Forum,On decorticated wood of Castanea,I foun

29-08-2025 05:16

Teleomorph of Dendrostilbella smaragdina ?
Francois Guay Francois Guay

I think I may have found the teleomorph of Dendros

30-01-2026 21:20

Bryocentria brongniartii und B. metzgeriae mit ihrer Anamorphe.
Arnold Büschlen

Bryocentria brongniartii und B. metzgeriae mit ihr

21-01-2026 16:32

Lichenicolous coelomycete
Gernot Friebes

Hi,I need your help with some black dots on a lich

« < 1 2 3 4 5 > »
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
  • message #24508
  • message #24508
  • message #24508
  • message #24508
  • message #24508
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