04-06-2025 15:10
Stefan JakobssonHi forum, On a herbaceous stem, possibly Aegopodi
03-06-2025 20:52
Stefan BlaserHello everybody, I didn't get anywhere with this
20-05-2025 22:15
Francois Guay
I found this ascomycete at the base of a dead fern
30-05-2025 17:54
Louis DENYHello forum!Touvé près de Belfort, altitude 350m
31-05-2025 00:51
Ethan CrensonHello, Last week in New York City this Orbilia wa
Diaporthales on Populus
Juuso Äikäs,
26-03-2025 18:29
I recently found some ascos that I think belong to Diaporthales, growing on a fallen Populus tremula tree (although am not 100% sure about the substrate's species). Presumably the stromata have developed under bark. There are clusters of a few short necks here and there
Asci 8-spored, IKI-. Spores 2-celled, constricted at the septum, having many guttules. What caught my attention was the rather small and inconspicuous, round appendage at both ends of the spores.
Spore measurements: 13.2 - 14.4 × 4.2 - 4.6 µm, Q = 3.0 - 3.5; avg = 13.9 × 4.3 µm, Qav = 3.2; n = 5.
Some Melanconis species at least have similar microscopy, but I haven't found a proper species candidate from there.
