20-04-2026 22:00
Malcolm Greaves
These pale yellow, hairy ascos were growing on cul
19-04-2026 21:23
Steve ClementsBonjour, I found this anamorphic fungus on old pl
19-04-2026 20:46
Steve Clements1 mm diameter approx spherical conidiophores on pl
12-04-2026 17:56
Hardware Tony
Found on dead stems in February earlier this year
17-04-2026 19:16
Enrique Rubio
Hi to everybodyI would appreciate any assistance r
14-04-2026 05:32
Ethan CrensonHi all, A few weeks back a friend pointed out som
17-04-2026 15:14
Bruno Coué
Bonjour.Récoltes du 16/04/2026, sur feuilles mort
12-04-2026 15:52
Gernot FriebesHi,I'm looking for help with this anamorph collect
14-04-2026 21:52
Gernot FriebesHi,found on dead leaves of Carex elata. Conidia: 4
16-04-2026 22:09
Buckwheat PeteHello, I'd like to ask about this older specimen:
unknown pyrenomycet 1
Gernot Friebes,
29-03-2009 15:10
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
Gernot Friebes,
29-03-2009 15:12
Re:unknown pyrenomycet 1
spores
Jacques Fournier,
29-03-2009 15:25
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
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
Re:unknown pyrenomycet 1
It should be added that the species was earlier named Astrosphaeriella applanata, e.g. in Dennis 1978
Zotto
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
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
Jacques Fournier,
29-03-2009 18:23
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
Jacques
Gernot Friebes,
29-03-2009 19:08
Re:unknown pyrenomycet 1
you are right, there really is a sheath.
Best wishes,
Gernot
Best wishes,
Gernot
