18-12-2025 21:17
Pol DebaenstThe identification took me to Byssonectria deformi
19-12-2025 10:10
Patrice TANCHAUDBonjour, récolte réalisée en milieu dunaire, a
18-12-2025 17:23
Bruno Coué
Bonjour,je serais heureux d'avoir votre avis sur c
18-12-2025 18:07
Margot en Geert VullingsThese plumes were found on rotten wood.They strong
17-12-2025 18:35
Michel Hairaud
Bonjour à tous/Hi to everyone I am passing along
15-12-2025 15:48
Danny Newman
Melanospora cf. lagenaria on old, rotting, fallen
15-12-2025 15:54
Johan Boonefaes
Unknown anamorph found on the ground in coastal sa
15-12-2025 21:11
Hardware Tony
Small clavate hairs, negative croziers and IKI bb
15-12-2025 07:09
Danny Newman
indet. Rutstroemiaceae sp. on unk. fallen leavesMc
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