Diaporthales on Populus - Forum ASCOFrance

11-01-2022 16:36

Literature request: Raitviir (2004) Revised synopsis of Hyaloscyphaceae?

Jason Karakehian

Hi does anyone have a digital copy of Raitviir A (

20-05-2026 17:47

Mollisia on Juncus

Margot en Geert Vullings

We found this Mollisia on dead Juncus stems mown l

22-05-2026 14:47

Rebentischia-like von Acer campestre

Gernot Friebes

Hi,superficial ascomata collected on bark of a liv

22-05-2026 14:44

minute Saccobolus from cow-dung (moist chamber from Portugal)

Lothar Krieglsteiner

in unripe condition citrine yellow, then soon fadi

22-05-2026 13:29

Pseudophacidium ?necans on Vaccinium myrtillus

Gernot Friebes

Hi,I am curious to hear your opinion on this mater

22-05-2026 10:59

Leptosphaeria? sur Phragmites

Nicolas VAN VOOREN

Trouvé sur Phragmites, ce que je pense être un L

20-05-2026 21:49

Lachnum on Juncus -> Lachnum pudicellum

Margot en Geert Vullings

We found this Lachnum on Juncus stems mown last ye

21-05-2026 17:01

Recherche de document

Pierre Repellin

Bonjour à toutes et à tous,Je recherche l'articl

20-05-2026 20:08

pyreno on Fraxinus

Andreas Millinger

Good evening,another quite distinctive find from M

20-05-2026 12:57

unknown semi-aquatic objects

Ingo Ibelshäuser

Hello everybody, on decayed hardwood e.g. Quercus

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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.

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