04-11-2025 09:07
Josep Torres
Hello.A suspected Hymenoscyphus sprouting on a thi
04-11-2025 12:43
Edvin Johannesen
Hi! One more found on old Populus tremula log in O
03-11-2025 21:34
Edvin Johannesen
These tiny (0.4-0.5 mm diam.), whitish, short-stip
28-10-2025 15:37
Carl FarmerI'd be grateful for any suggestions for this strik
03-11-2025 16:30
Hans-Otto Baral
Hello I want to ask you if you have found this ye
28-10-2025 19:33
Nicolas Suberbielle
Bonjour à tous,Je voudrais votre avis sur cette r
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?
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
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