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Philippe PELLICIER

Sur branche morte de Mélèze. Les ascospores sphÃ

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17-09-2025 16:14

Philippe PELLICIER

Apothécies enterrées, fermées au début puis s'

17-09-2025 10:50

Heather Merrylees

Hi there!I am hoping for any advice on the identif

11-09-2025 16:57

Jason Karakehian Jason Karakehian

Our revision of Marthamycetales (Leotiomycetes) is

16-09-2025 12:53

Philippe PELLICIER

Pézizes de 1-4 mm, brun grisâtres, sur les capsu

03-09-2025 12:44

Enrique Rubio Enrique Rubio

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Nicolas VAN VOOREN Nicolas VAN VOOREN

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14-09-2025 22:16

Philippe PELLICIER

Apothécies petites jusquà 3 mm, oranges, avec de

13-09-2025 14:01

Thomas Flammer

dark brown apothecia, splitIKI-Spores biguttulate

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unknown pyrenomycet 1
Gernot Friebes, 29-03-2009 15:10
Hello forum,

it's my first post here and I'm starting with two pyrenomycetes. I was not able to determine them with my literature.

Yesterday I found this one. Spores: 26-27 x 9-10 µm, are brown, two-celled and one half is smaller than the other. It grew on old wood of a deciduous tree.

Best wishes,

Gernot Friebes
  • message #7264
Gernot Friebes, 29-03-2009 15:12
Re:unknown pyrenomycet 1
spores


  • message #7265
Jacques Fournier, 29-03-2009 15:25
Jacques Fournier
Re:unknown pyrenomycet 1
Hi Gernot,
your photos of small conical ascomata and unequally two-celled ascospores remind me Kirschsteiniothelia aethiops. You should first check if asci are bitunicate and hamathecium composed of cellular (septate) filiform elements.
If yes, K. aethiops is characterized by obclavate asci (broader at base then at apex) and a conspicuous sheath around ascospores. Ascospores are verruculose, but this is not diagnostic.
Please come back with good photos af asci and spores!
Jacques
Hans-Otto Baral, 29-03-2009 15:41
Hans-Otto Baral
Re:unknown pyrenomycet 1
It should be added that the species was earlier named Astrosphaeriella applanata, e.g. in Dennis 1978

Zotto
Gernot Friebes, 29-03-2009 18:03
Re:unknown pyrenomycet 1
Hallo Jacques and Zotto,

thank you for your answers!

Here are new fotos of the pyrenomycet, I think they fit quite well with the description of Kirschsteiniothella aethiops except for the spores which don't have a sheath.

Best wishes,

Gernot
  • message #7276
Jacques Fournier, 29-03-2009 18:23
Jacques Fournier
Re:unknown pyrenomycet 1
the sheath can be observed on released spores only, it is quite conspicuous in water on fresh material. Otherwise all the rest is OK.
Jacques
Gernot Friebes, 29-03-2009 19:08
Re:unknown pyrenomycet 1
you are right, there really is a sheath.

Best wishes,

Gernot
  • message #7283