21-03-2026 15:13
Lepista ZacariasHello everyone, Does any one know of any literatu
20-10-2017 09:23
Garcia SusanaEste otro crecía en el mismo trocito de madera qu
20-03-2026 16:16
Edvin Johannesen
These 0.5 mm diam. acervuli were breaking through
19-03-2026 19:34
Filip Fuljer
Hello everyone,a few days ago I collected this str
19-03-2026 18:25
William Slosse
Good evening everyone, On 18/03/26 I found a few
17-03-2026 10:09
François Freléchoux
Bonjour, Voici la description rapide d'un petit d
19-03-2026 17:50
Enrique Rubio
Hi to everybodyThese thiny, blackish pseudothecia
I have a difficult situation with this pyreno from the Northeastern US. It's a Dothideomycete, bitunicate, the asci developing in white locules in a black stroma that is erumpent through the substrate, the bark of Gray Birch, Betula populifolia.
Asci: clavate, bitunicate, 102-187 x 17.5-22.5µm.
Ascospores: unicellular, hyaline, many guttules, broadly ellipsoid, 20-24 x 8-10.5µm.
I also found in pycnidia on the same bark nearby. Also black and erumpent, but with locules that are dark at the center. The pycnidia contain brown conidia that are finely warted. They measure about 17.5-26 x 9-12µm. I am uncertain if the pycnidia are the asexual stage of the asco I described first.
I have indicated on the photos when they depict the pycnidia.
Perhaps someone can take a look and let me know. Is this Botryosphaeria, or Diplodia or something else?
Thank you in advance,
Ethan
due to the morphology and the size of the conidia I think it is Diplodia seriata, the sexual form I cannot assure it is from D. seriata
.Best wishes
Angel
I think you have Botryosphaeria with your teleomorph, the white locales when cut, the large spores, thick bitunicate asci, and the “nipple” at the apex of the ascus takes the cake. Since diploidia is an anamorph of bot, it’s possible you have both sexual and asexual fruiting. I see B. dothidea in the northeast often on woodies.
Devin
Best wishes
Angel