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15-04-2026 19:33

Scutellinia cf. citrina
Fátima Durán Manzaneque

Hi!! I need help, I found this Ascomycete but I d

14-04-2026 05:32

Pyrenomycete with yellow subiculum on Aralia
Ethan Crenson

Hi all, A few weeks back a friend pointed out som

14-04-2026 21:52

Thyriothecioid anamorph on Carex elata
Gernot Friebes

Hi,found on dead leaves of Carex elata. Conidia: 4

14-04-2026 20:31

Psilachnum lateritioalbum on Phragmites australis?
Gernot Friebes

Hi,can this be Psilachnum lateritioalbum on Phragm

12-04-2026 17:56

Seeking genus for 1 – 3 septate spored asco. on herb Nepteta cataria (Mint).
Hardware Tony Hardware Tony

Found on dead stems in February earlier this year

12-04-2026 15:52

Anamorph on Salix
Gernot Friebes

Hi,I'm looking for help with this anamorph collect

12-04-2026 12:22

Unknown anamorph on Primula eliator
William Slosse William Slosse

In a dune grassland in Oostduinkerke (Belgium), on

11-04-2026 15:45

Article search - Octospora ithacaensis
Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Please, could anyone send me this paper?Moyne G.,

11-04-2026 13:34

Requesting help with Dasyscyphella sp. ID
Artem Ptukha

Hello, I am seeking assistance with the identific

11-04-2026 10:42

Una para ID
Castillo Joseba Castillo Joseba

Me mandan el material de Galicia, España, recolec

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unknown pyrenomycet 2
Gernot Friebes, 29-03-2009 15:18
Hello,

here is my second pyrenomycet I found yesterday. It grew on a thin twig of a deciduous tree. Spores: 21-23 x 5,5-6,5 µm.

Best wishes,

Gernot Friebes
  • message #7266
Gernot Friebes, 29-03-2009 15:19
Re:unknown pyrenomycet 2
perithecia
  • message #7267
Gernot Friebes, 29-03-2009 15:24
Re:unknown pyrenomycet 2
spores
  • message #7268
Jacques Fournier, 29-03-2009 15:35
Jacques Fournier
Re:unknown pyrenomycet 2
Hi again,
the large allantoid spores could fit Eutypella dissepta (Diatrypaceae) but you need further data to support it.
Please make a vertical section to see how perithecia are arranged, and two slides: one in water or Congo red to see if asci are spindle-shaped and long stipitate, another in Melzer's reagent after pretreatment in 3% KOH to check the presence and reaction of apical ring.
More soon!
Jacques
Gernot Friebes, 29-03-2009 18:09
Re:unknown pyrenomycet 2
Hello Jacques,

thank you for your good tip. The asci are indeed long stipitate and don't have any reactions in Melzer's reagent.

At first a picture of the perithecia.

Best wishes,

Gernot
  • message #7277
Gernot Friebes, 29-03-2009 18:09
Re:unknown pyrenomycet 2
spores and asci
  • message #7278
Jacques Fournier, 29-03-2009 18:22
Jacques Fournier
Re:unknown pyrenomycet 2
in Eutypella dissepta the apical ring often does not react clearly with iodine. The configuration of the perithecia within the stroma fits E. dissepta. Moreover, the structure of the wood in cross section is much like that of Ulmus, the usual host of this fungus.
I think you can keep this name
Jacques