28-03-2026 07:55
Marc Detollenaere
Hello everybody,Yesterday I found a number of whit
26-03-2026 15:31
Ã…ke Widgren
Hello,I found this one in October last year, on r
27-03-2026 15:23
Gernot FriebesHi,this Trichopezizella deviates from typical T. b
25-03-2026 10:35
Hulda Caroline HolteHello,I collected this species growing on a dead b
27-03-2026 15:08
Gernot FriebesHi,I'm looking for help with this coelomycete on C
27-03-2026 10:47
Ã…ge OterhalsI have tentatively identified this Stictis to S. f
24-03-2026 21:37
Elisabeth StöckliBonsoir,Sur bois (tronc) très pourri de conifère
25-03-2026 22:23
Marc Detollenaere
Dear Forum,On a debarked stem of Tilia, we found s
Amicodisca sp. ?
Francois Guay,
31-10-2024 04:07
Last week, I found what appears to be an Amicodisca sp. growing on what I believe to be Fagus grandifolia (American beech) or red maple leaves, though I can’t be certain as the leaves are quite decomposed. They reach about 300 microns in diameter. Microscopy was done in water and Baral. Any insights on its identification would be appreciated. Thanks!
Take a look at the iNat observations for photos, because I can't seem to find how to upload them here.
Hans-Otto Baral,
31-10-2024 08:15
Re : Amicodisca sp. ?
Hello, yes, this is clearly an Amicodisca. A. svrcekii seems close, but that has larger spores with a higher lipid content and grows on wood.
There exists a"Trichodiscus" virescentulus (Mouton) Dennis 1963: 374 on Carpinus leaves (Ellis & Ellis 1985: 70 have a sample on Acer leaves.
Possibly the same is Incrupila sulphurea.
Lothar Krieglsteiner made a collection and drawing on Fagus leaves in Kehlheim (Bavaria). See my folder on Amicodisca.
Francois Guay,
31-10-2024 16:34
Re : Amicodisca sp. ?
Thank you, Zotto! It does fit, and there is not much information or observations of it on the internet. I see that IF says the actual name is Dennisiodiscus virescentulus. Is this valid? Or should I call it Trichodiscus virescentulus? I will update the species ID on iNaturalist.
Hans-Otto Baral,
31-10-2024 17:02
Re : Amicodisca sp. ?
The genus Dennisiodiscus is a Pyrenopezizaceae, and Trichodiscus is an earlier but invalid name for Dennisiodiscus. So you may use in apostroph "Dennisiodiscus".
Francois Guay,
31-10-2024 17:52
Re : Amicodisca sp. ?
Perfect, Thank you !
Francois Guay,
31-01-2025 21:21
Re : Amicodisca sp. ?
Hi Otto, I got the ITS sequence back from this specimen, here is the Mycomap blast link and the inat link.
Mycomap:Â https://mycomap.com/genetics/blast-search/-r248671/
iNat: https://www.inaturalist.org/observations/248963428
Mycomap:Â https://mycomap.com/genetics/blast-search/-r248671/
iNat: https://www.inaturalist.org/observations/248963428
Hans-Otto Baral,
31-01-2025 21:54
Re : Amicodisca sp. ?
Very good! I see a certain similarity with Amicodisca virella and A. svrcekii, but different enough to be a species f its own. The growth on leaves is also different from those.
Do you have the sequence? I would like to include it in a tree. Does it have an exact date?
Francois Guay,
31-01-2025 22:08
Re : Amicodisca sp. ?
Very interesting. Can you give me your email? I will send you the file, thank you
François Guay
François Guay
Hans-Otto Baral,
01-02-2025 09:33