15-06-2020 01:15
Ethan CrensonHello all,I have a difficult situation with this p
01-11-2017 21:48
Bernard CLESSE
Bonsoir à toutes et tous,J'ai reçu d'une amie ce
17-06-2020 08:27
Garcia SusanaHola, He encontrado estos peritecios que crecían
16-06-2020 18:06
Nicolas VAN VOOREN
Bonsoir.Je cherche une copie de l'article suivant
11-06-2020 16:18
Lothar Krieglsteiner
At 24.5.2020 I collected two small brown pieces of
15-06-2020 16:04
Juuso ÄikäsThere was a thin branch of Picea abies that had fa
15-06-2020 16:11
Juuso ÄikäsThese little Lachnums were growing on fallen Salix
12-06-2020 19:59
Hardware Tony
Found on Bambusa, I first thought these were two d
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