10-06-2026 23:08
éric ROMERO
Bonjour tous, Je vous propose un Mollisia trouvé
10-06-2026 12:54
Steve ClementsBonjour encore, Pouvez-vous m'aider, s'il vous pl
09-06-2026 18:32
Camille MertensSur morceau de roseau immergé 0,5 - 0,7 mm de dia
10-06-2026 21:16
François Freléchoux
Bonsoir,Le dernier du jour, en attendant votre avi
10-06-2026 21:07
François Freléchoux
Toutes les tiges de gentianes jaunes de l'an passÃ
10-06-2026 13:41
François Freléchoux
Bonjour à nouveau, Voici une trouvaille d'hier.
10-06-2026 11:53
Steve ClementsBonjour, This disco is abundant on dead stems of
10-06-2026 10:45
François Freléchoux
Bonjour à nouveau, Encore une détermination qui
08-06-2026 10:16
Spooren Marco
I don`t have a clou about this fungus,it is not in
10-06-2026 09:24
François Freléchoux
Bonjour, J'imagine que cette détermination ne do
Bitunicate asco on Betula
Enrique Rubio,
19-04-2012 20:37
Hi againDo you know this bitunicate ascomycete with inconspicuous inmersed stromata with 1-2 pseudothecia, erumpent trought the bark of Betula small branches?Â
Spores are inequally two celled and their walls are longitudinally striate (only visible in Melzer). They have some pseudosepta too.
I don't know what genus belongs this fungus Â
Many thanks again
Alain GARDIENNET,
19-04-2012 21:18
Re : Bitunicate asco on Betula
Hi Enrique,
You should look in the Pleomassariaceae. Perhaps it could be Pleomassaria siparia = Splanchnonema siparium but striate ornementation reminds me at other species which occurs on other hosts.
I will research more.
Alain
You should look in the Pleomassariaceae. Perhaps it could be Pleomassaria siparia = Splanchnonema siparium but striate ornementation reminds me at other species which occurs on other hosts.
I will research more.
Alain
Alain GARDIENNET,
19-04-2012 21:22
Re : Bitunicate asco on Betula
I agree with René to say it isn't siparia. Personnaly, I thought at S. quercicola (on Quercus) which has striate ascopores, as yours.
Alain
Alain
Alain GARDIENNET,
19-04-2012 21:26
Re : Bitunicate asco on Betula
I think now it could be Splanchnonema argus. It occurs on Betula.
I let you verify.
Alain
I let you verify.
Alain
argus-0001.doc
Chris Yeates,
19-04-2012 21:49
Re : Bitunicate asco on Betula
Hello Enrique
if it is S. argus keep an eye out for the distinctive anamorph Myxocyclus polycystis:
best wishes
Chris
if it is S. argus keep an eye out for the distinctive anamorph Myxocyclus polycystis:
best wishes
Chris
Norbert Heine,
20-04-2012 00:42
Re : Bitunicate asco on Betula
Hi Enrique,
I'll give you a portrait of Splanchnonema argus and the anamorph Myxocyclus polycistis.
(By the way - fine photo, Chris!)
Some days ago I found this two species together on Betula - Twigs.
The spores of Splanchnonema argus were 60-72 x 14-17µm.
Now you can compare.
Best wishes
Norbert
PS: And here you can read something more:
http://www.ib-pan.krakow.pl/pubs-pdf/Polish%20Botanical%20Journal/2010/PBJ55-2_s373-380.pdf?
I'll give you a portrait of Splanchnonema argus and the anamorph Myxocyclus polycistis.
(By the way - fine photo, Chris!)
Some days ago I found this two species together on Betula - Twigs.
The spores of Splanchnonema argus were 60-72 x 14-17µm.
Now you can compare.
Best wishes
Norbert
PS: And here you can read something more:
http://www.ib-pan.krakow.pl/pubs-pdf/Polish%20Botanical%20Journal/2010/PBJ55-2_s373-380.pdf?
Enrique Rubio,
20-04-2012 16:50
Re : Bitunicate asco on Betula
Many thanks to all
I think my fungus is not S. argus because my ascospores with striate walls are not encapsulated.
I was looked for S. striatutulum and S. quercicola, as Alain and René said, and I think that S. quercicola is a good possibility. Do you know if this fungus has been collected in Europe?
Enrique
I think my fungus is not S. argus because my ascospores with striate walls are not encapsulated.
I was looked for S. striatutulum and S. quercicola, as Alain and René said, and I think that S. quercicola is a good possibility. Do you know if this fungus has been collected in Europe?
Enrique