10-05-2026 23:17
Andreas Gminder
Hello,today we found in a moist steep decidous for
14-05-2026 05:36
Ethan CrensonHi all, I haven't paid much attention to Lachnu
16-03-2011 14:31
roman vargas albertoHi. I would like some opinion about this Peziza
11-05-2026 12:32
Bernard CLESSE
Pourriez-vous m'aider à identifier cette héloti
13-05-2026 15:26
François Freléchoux
Bonjour,Voici une récolte faite il y a quelques j
12-05-2026 15:41
Nicolas VAN VOOREN
Dear Ascolovers, especially interested in Pezizale
13-05-2026 12:05
Thierry Blondelle
Bonjour à tous,J'aimerais avoir confirmation de c
28-04-2026 20:07
Lothar Krieglsteiner
... on twig in the air at standing Ceratonia siliq
27-04-2026 20:52
Lothar Krieglsteiner
Found on hanging tiwg of Olea europaea in dried-ou
11-05-2026 20:22
Lothar Krieglsteiner
on attached twig of standing Ficus caricaquite uns
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