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01-05-2025 20:11

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello, today I have collected a tiny ascomycete g

27-04-2025 15:54

Martin Bemmann Martin Bemmann

Can somebody provide this article from a Leningrad

03-05-2025 18:35

Edmond POINTE Edmond POINTE

J'ai  connu Michel DELPONT au début de ma passio

05-05-2025 10:09

Nicolas Suberbielle Nicolas Suberbielle

Re-bonjour,Cet ascomycète trouvé et étudié par

05-05-2025 09:35

Nicolas Suberbielle Nicolas Suberbielle

Bonjour à tous,Marie-Rose d'Angelo de la SociétÃ

29-04-2025 09:13

Louis DENY

Bonjour forumVosges du sud, ballon d'Alsace altitu

04-05-2025 11:37

Andreas Gminder Andreas Gminder

Hello,yesterday I took an attached branch of Querc

02-05-2025 08:41

Tony Moverley

A Monilinia type fungus has recently been collecte

02-05-2025 08:45

Isabelle Charissou

Bonjour, existe-t-il un pdf d'un Glossarium polygl

03-05-2025 12:43

Matthias Reul Matthias Reul

Hi together, Maybe someone has an idea about this

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Pleospora-like from sphagnum
Nina Filippova, 18-04-2013 18:16
Good evening.

Some loculoascomycet was found on leaves of sphagnum, probably somebody may have acquaintance with it. I am only fiddling around Pleospora, but have not looked seriously into the keys of this group yet.


Pseudothecia globose (130-200 mk), without stroma, site single at the surface of sphagnum leaves and at miscellaneous substrates, attached to the surface with many "hairs" (brown hypha arising at the surface at base and sides and outspread to the substrate), the same hairs but shorter arise from upper part.


Peridium from angular cells about 5 mk in diameter, hairs 3 mk thick at base; asci clavate - near globose, with 1 single spore, about 90 x 55 mk; paraphysoid tissue ("parenchymatic") present; spores muriform, hyaline when in asci, dark brown when mature, elongated with middle constriction at first, but enlarged to oval, almost globose when mature, with 3-5 longitudinal and up to 10 transverse septa, with many oil droplets inside, 64-81 x 26-46 (N=11).

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  • message #22976
  • message #22976
  • message #22976
Georges Greiff, 02-12-2024 19:00
Re : Pleospora-like from sphagnum
I think Julella might be appropriate for this collection based on the general features, particularly hyaline to darkening mature spores with few (1?) developing to maturity per ascus. These are likely algicolous rather than bryophilous s.str., but certainly worth investigating.
George