08-11-2025 00:29
Francois Guay
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Josep Torres
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Edvin Johannesen
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Edvin Johannesen
These tiny (0.4-0.5 mm diam.), whitish, short-stip
Geopora & Melanospora
Bernard CLESSE,
13-12-2017 20:24
J'ai trouvé hier, dans un xérobrometum (pelouse calcicole xérique) ce Geopora, semi-hypogé, dans un microsol de 1cm de profondeur.L'apothécie, très fermée, mesure 7 mm de diamètre et l'ouverture de celle-ci a 2 mm.
En ouvrant l'apothécie pour prendre de l'hyménium, quelle ne fut pas ma surprise de voir des petites vésicules. Vésicules qui s'avèrent être des périthèces de Melanospora apparemment.
Que pensez-vous de ce Geopora et ce Melanospora ?
Bernard
Ron Bronckers,
13-12-2017 21:46
Re : Geopora & Melanospora
Hi Bernard,
Maybe someone has a pdf of the following article:
Kers, L.E. (1974) - The Swedish Geoporae and their Pyrenomycete Infections. Svensk Botanisk Tidskrift 68: 344-354.
If nobody else has it I can scan it for you and send it tomorrow.
The parasite is indeed most likely a Melanospora species.
Seems to be close to M. brevirostris, spores 25-31 x 13-17 (en face) x 12-14 (lateral view).
Host here was Geopora arenicola.
Best,
Ron
Maybe someone has a pdf of the following article:
Kers, L.E. (1974) - The Swedish Geoporae and their Pyrenomycete Infections. Svensk Botanisk Tidskrift 68: 344-354.
If nobody else has it I can scan it for you and send it tomorrow.
The parasite is indeed most likely a Melanospora species.
Seems to be close to M. brevirostris, spores 25-31 x 13-17 (en face) x 12-14 (lateral view).
Host here was Geopora arenicola.
Best,
Ron
Bernard CLESSE,
13-12-2017 21:50
Re : Geopora & Melanospora
Hi Ron, great thanks for the different information !
Bets regards,
Bernard
Bets regards,
Bernard
Ron Bronckers,
13-12-2017 22:02
Re : Geopora & Melanospora
Are the perithecia spherical and non-ostiolate?
Bernard CLESSE,
13-12-2017 22:05
Re : Geopora & Melanospora
Yes they are spherical and non-ostiolate, Ron !
Bernard
Bernard
Bernard CLESSE,
13-12-2017 22:14
Re : Geopora & Melanospora
Here is a picture.
Bernard
Bernard
Ron Bronckers,
13-12-2017 23:05
Re : Geopora & Melanospora
Then it probably is a Microthecium species.
Kers describes one species M. geoporae, but with spores 28-30 x 13-16.
I will scan the article and send it to your private mail.
A very interesting find, I never found these paraites on Geopora.
Best,
Ron
Kers describes one species M. geoporae, but with spores 28-30 x 13-16.
I will scan the article and send it to your private mail.
A very interesting find, I never found these paraites on Geopora.
Best,
Ron
Viktorie Halasu,
14-12-2017 00:55
Re : Geopora & Melanospora
Hello Bernard, Ron,
I have that article, sent to both of you.
Viktorie
I have that article, sent to both of you.
Viktorie
Lothar Krieglsteiner,
14-12-2017 07:55
Re : Geopora & Melanospora
Hi Viktorie,
could I have the file, too?
Thanks and best regards, Lothar
Michel Hairaud,
14-12-2017 08:23
Re : Geopora & Melanospora
Michel Delpont,
14-12-2017 08:39
Re : Geopora & Melanospora
Also for me if possible, thank you.
Michel.
Michel.
Martin Bemmann,
14-12-2017 09:20
Re : Geopora & Melanospora
It is already available here on Ascofrance:
http://ascofrance.fr/uploads/forum_file/Kers-1974-0001.pdf
cheers
Martin
http://ascofrance.fr/uploads/forum_file/Kers-1974-0001.pdf
cheers
Martin
Michel Hairaud,
14-12-2017 09:30
Re : Geopora & Melanospora
Merci Martin
Amitiés
Michel
Amitiés
Michel
Peter Püwert,
19-12-2017 02:50
Re : Geopora & Melanospora
Hello in the round,
in my opinion could be the mushroom Melanospora brevirostris, only not ripely. On the last macrophoto one recognizes that some ascomata study a short neck and a few have already studied the dark spores.
The ascomata on my first photo are full-ripe, the host is Geopora/Sepultaria arenicola. Unfortunately, in addition I do not have microphotos.
Here still a screen sequence of Melanospora episphaeria on Hypomyces cf. rosellus. About this species there is surely little informations.
Literature:
in my opinion could be the mushroom Melanospora brevirostris, only not ripely. On the last macrophoto one recognizes that some ascomata study a short neck and a few have already studied the dark spores.
The ascomata on my first photo are full-ripe, the host is Geopora/Sepultaria arenicola. Unfortunately, in addition I do not have microphotos.
Here still a screen sequence of Melanospora episphaeria on Hypomyces cf. rosellus. About this species there is surely little informations.
Literature:
CANNON (1982): A re-evaluation of MELANOSPORA Corda and similar Pyrenomycetes....
GARCIA et al. (2004): Two new species of SPHAERODES from Spanish soils
YAO et al. (2007): SPHAERODES in China
GUARRO et al. (2012): Atlas of Soil Ascomycetes
I have the first three documents as PDF.
Greetings Peter.
Jacky Launoy,
19-12-2017 09:22
Re : Geopora & Melanospora
Hallo Peter,
i am interesting in the paper of Canon 1982. I found Melanospora brevirostris on leporid dung collected in de dunes of De Panne. In this dunes I found also serveral times Geopora arenicola but i had never attention for parasites. You can send it to my mail jacky@launoy.be
i am interesting in the paper of Canon 1982. I found Melanospora brevirostris on leporid dung collected in de dunes of De Panne. In this dunes I found also serveral times Geopora arenicola but i had never attention for parasites. You can send it to my mail jacky@launoy.be
Michel Delpont,
19-12-2017 12:03
Re : Geopora & Melanospora
Hi Peter; the last two publications would interest me, if it is possible! Thank you.
Michel.
Michel.
Bernard CLESSE,
19-12-2017 13:17
Re : Geopora & Melanospora
OK Peter, great thanks for your informations and pictures !
Best regards,
Bernard
Best regards,
Bernard