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25-11-2015 22:33

Björn Wergen Björn Wergen

Hi friends,I wonder if someone has this here:ARX J

21-11-2015 23:32

Elsa Sousa

if possible to get at least a genera, without micr

27-11-2015 10:40

Castillo Joseba Castillo Joseba

en caña (Arundo?)No he visto  AscasSaludosJoseba

27-11-2015 11:11

Garcia Susana

Hi:I found this small carbonaceous crust on hardwo

26-11-2015 16:22

Stoykov Dimitar Stoykov Dimitar

Hallo, Dear Friends,This autumn I came up with an

23-11-2015 13:14

Garcia Susana

Hi Found Apothecia about pruning palm.Convex, pru

26-11-2015 10:04

Blasco Rafael Blasco Rafael

Hola, tengo esta posible Ciliolarina ?? pero la me

25-11-2015 22:44

Bernard CLESSE Bernard CLESSE

Voici un petit asco trouvé parmi les mousses, al

23-11-2015 11:50

Blasco Rafael Blasco Rafael

Hola, esta muestra esta sobre madera de Fagus. muy

24-11-2015 11:24

Stefan Blaser

Hello everybody,I thought with this special substr

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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).

  • message #22976
  • 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