24-03-2026 21:37
Elisabeth StöckliBonsoir,Sur bois (tronc) très pourri de conifère
25-03-2026 10:35
Hulda Caroline HolteHello,I collected this species growing on a dead b
26-03-2026 15:31
Åke Widgren
Hello,I found this one in October last year, on r
25-03-2026 22:23
Marc Detollenaere
Dear Forum,On a debarked stem of Tilia, we found s
24-03-2026 15:44
Åge OterhalsI hope someone can confirm the name of this collec
25-03-2026 20:53
François BartholomeeusenDear forum members,On 23 March 2026, I found sever
23-03-2026 20:16
Miguel Ángel Ribes
Good eveningI'm unable to identify this Coprotus o
25-03-2026 15:06
Bernard CLESSE
Bonjour à toutes et tous,Pourriez-vous me confirm
Black Perithecia with Conidiomata in Pink Stained Wood
Peter Thompson,
24-04-2013 23:37
I have a collection of black, spherical perithecia accompanied by brown conidiomata with paler tips and ball shaped 'joints' as well as regular septation. These conidiomata are surrounded by pinkisk red staining of the decorticated wood of the host.
The microscopy shows 8-spored asci; the spores readily splitting at their central septum. The spores are hyaline, with 2 to 4 guttules. The genus Chaetosphaeria comes to mind for some species with spores splitting into part-spores, such as C. preussii, but I can find no suitable species in the literature, assuming that the pink staining is relevant.
I have attached images of the fruit bodies and the microscopy.
Does anyone have any idea as to the species?
Thank you,
Best wishes,
Peter.
