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29-03-2009 15:10
Gernot FriebesHello forum, it's my first post here and I'm st
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27-03-2009 18:53
Alain BRISSARDBonjour à tous Ma documentation limitée m'amè
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25-03-2009 17:45
Eric StrittmatterBonjour à tous, un ami a trouvé cette anamorp
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25-03-2009 10:33
Bonjour, On m'a apporté cette diaporthale sur f
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
Jacques Fournier,
29-03-2009 15:25
![Jacques Fournier](/uploads/user_vgn/Fournier-0001.jpg)
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
![Hans-Otto Baral](/uploads/user_vgn/Baral-0001.jpg)
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
Jacques Fournier,
29-03-2009 18:23
![Jacques Fournier](/uploads/user_vgn/Fournier-0001.jpg)
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