03-09-2025 12:44
Enrique Rubio
Hi to somebody.I would like to know your opinion o
15-09-2025 14:40
Nicolas VAN VOOREN
Hello.I'm searching for a digital copy of the seco
14-09-2025 22:16
Philippe PELLICIERApothécies petites jusquà 3 mm, oranges, avec de
13-09-2025 14:01
Thomas Flammerdark brown apothecia, splitIKI-Spores biguttulate
10-09-2025 17:18
Blasco Rafael
Hola, encontre este estiercol de vaca estos apotec
13-09-2025 14:10
Wim de GrootWe found this hymenoscyphus on rubus fruticulosis.
11-09-2025 16:57
Jason Karakehian
Our revision of Marthamycetales (Leotiomycetes) is
10-09-2025 23:53
Marcel Heyligen
Found on Robinia pseudoacasia together with Diapor
02-09-2025 11:34
Thomas Læssøehttps://svampe.databasen.org/observations/10527903
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
