18-05-2024 10:47
Anna KlosGoodmorning,We found this tiny ascomycete (max. 1m
10-05-2024 17:40
Anna KlosGood afternoon, Thursday during an inventory we f
17-05-2024 16:25
Pavel JiracekErioscyphella lunata, found on a fallen needle of
29-01-2022 21:44
Jan EcksteinGood evening, apothecia small, yellowish, 150-300
16-05-2024 11:19
Sylvie Le GoffBonjour, j'ai récolté sur une branchette de feui
14-05-2024 09:19
Hans-Otto Baral
Hi, I want to announce for next Sunday 17.00 middl
16-05-2024 11:49
Castillo Joseba
De ayer en rama de abetoNo se por donde mirarA ver
I have Collected a Diatrypaceae on hardwood.
Here are some features:
Perithecia immersed, usually separated, spherical / ovoid with a diameter of 600-900um.
Ostioles emerging separately. With a round shape the diameter is about 350um.
Asci octosporadas on a long pedicel clearly IKI +
Are not mature perithecia and spores are difficult to obtain, however, the size of which are measured are on average 17.7x4.2um, and are slightly allantois.
With these data, I think it might be Cryptosphaeria and within this genre fits better with C.subcutanea.
You can give me your opinion?
Thank you very much, greetings
Susana
again an interesting find. I agree it resembles Cryptosphaeria by many traits but in this genus the wood surface beneath the stromata is typically strongly blackened unlike what shows your photo 2.
I suggest you observe a stroma in vertical section and compare it to Rappaz' description.
Moreover, C. subcutanea which might fit as to ascospore dimensions differs in having inamyloid asci and a fairly boreal distribution on Salix.
Try to find mature ascospores to check whether they become pigmented or stay hyaline.
Good luck!
Jacques
I found mature perithecia, and spores are pigmented, they are brown.
I made cross sections, and I noticed that the perithecia are grouped two to three and their necks are emerging together.
There is a black dorsal line (Fig.2) and in some cases a ventral black line also appears (Figure 3).
Now I think it may be Eutypella dissepta. It can be?
Saludos
Susana
