05-05-2026 22:40
Gernot FriebesHi,I believe this is a Plagiostoma growing on a Sa
04-05-2026 18:13
Stephen Martin Mifsud
ID request for what seems to be a true aquatic fun
04-05-2026 16:39
Stephen Martin Mifsud
ID request: This specimen was collected in Malta o
28-07-2011 18:31
Alex Akulov
Dear FriendsToday I made the pdf file of Velenovsk
28-04-2026 20:07
Lothar Krieglsteiner
... on twig in the air at standing Ceratonia siliq
04-05-2026 09:50
Castillo Joseba
Me mandan el material seco de Galicia,(España) re
02-05-2026 12:42
Alain BRISSARDBonjour à tousJeuidi 30 avril dernier on m'a remi
02-05-2026 13:06
Pauline. PennaBonjour Please can someone help me with this id
01-05-2026 22:45
Thierry Blondelle
Bonjour à tous, Une récolte sur bouse séchée d
we need your help with this curious ascomycete on twigs of Magnolia. Here are a few key characters:
-) Ascomata glabrous, non-stromatic, sitting rather loosely on/between conidiophores of a hyphomycete (asexual morph of the same species?)
-) Asci apparently bitunicate, reaction strongly to IKI, maybe with a slight amyloid reaction of the (inner?) wall
-) Ascospores faintly striate, 12.5-14 x 4.3-5.2 µm
Thanks for any ideas!
Best wishes,
Gernot
Letendraea helminthicola looks a lot similar (based on Ellis & Ellis). I don't know what other species are in this genus.
Viktorie
Hello Germot,
I acompletely agree with Viktone that this is Letendraea. Ihave two collections of this seemingly rare ascomycete: once from Cumbria and recently from the gerden here in Argyll
Peter
thanks a lot for your help! I think the genus is pretty clear now indeed. I'm still a bit irritated by the faintly striate ascospores, however. After quickly reading through some descriptions of L. helminthicola I didn't find this feature mentioned, in fact two sources (Dennis in British Ascomycetes and Akulov 2015) explicitly write "smooth" regarding the spore surface. If anyone has further insight into this I would really appreciate it.
Best wishes,
Gernot
could the ornamentation be soluble in some reagent, e.g. KOH, MLZ? Or either soluble or unstainable in LACB?
edit: Akulov used 3% KOH.
Viktorie
I would have to check that. For now all I can say is that the striation is very faint but still well visible in water; both myself and the person who collected the material observed it independently of each other. But if one doesn't look carefully it could certainly be missed.
Best wishes,
Gernot
Best wishes,
Gernot
