09-06-2026 18:32
Camille MertensSur morceau de roseau immergé 0,5 - 0,7 mm de dia
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
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
Asco on Himalayan Balsam
Malcolm Greaves,
04-06-2020 18:28
HelloCan someone help with this long necked flask found on a dead Himalayan Balsam stem.
Only 1/3mm with spores 5.3 x 2.5. The spores look to be developing a septa but I could find none with a fully developed one so migh just be the internal structure.
Thanks
Mal
Guy Buddy,
04-06-2020 23:25
Re : Asco on Himalayan Balsam
Hey Mal
I will take a guess and say something in the ophiostomatales but with only the anamorph it’s hard to narrow it down.
Devin
I will take a guess and say something in the ophiostomatales but with only the anamorph it’s hard to narrow it down.
Devin
Malcolm Greaves,
05-06-2020 08:42
Re : Asco on Himalayan Balsam
Ok thanks for that Devin.
Mal
Mal
Paul Cannon,
05-06-2020 18:12
Re : Asco on Himalayan Balsam
Hello Mal
It's possible that this could be Arxiomyces vitis (syn. Phaeostoma vitis), which has evanescent asci with ascospores about the size that you give. They have a single large germ pore (large in comparison to the spore width) at one end of the ascospore - I wasn't sure whether I could see that in your image. It would only be the second GBI collection, to my knowledge, and if you have more material I'd be interested to see it.
There's not much published info on the genus but I'll send you a paper that treats the species (as Phaeostoma).
Best wihes
Paul
Malcolm Greaves,
06-06-2020 22:23
Re : Asco on Himalayan Balsam
Thanks I will get it in the post.
Paul Cannon,
14-06-2020 17:02
Re : Asco on Himalayan Balsam
I've looked at the specimen that Mal kindly sent me. I think it is a species of Arxiomyces, but it is a little different from A. vitis and is probably undescribed.
More information here - http://fungi.myspecies.info/all-fungi/arxiomyces-sp-p4502