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31-10-2024 04:07

Francois Guay Francois Guay

Last week, I found what appears to be an Amicodisc

28-10-2024 17:51

B Shelbourne B Shelbourne

• Macro and habitat suggest Hymenoscyphus s.l.,

24-10-2024 23:07

Patrice TANCHAUD

Bonsoir, récolte réalisée sous hêtres et chê

28-10-2024 23:30

Marc Detollenaere Marc Detollenaere

Dear Forum,I found some small fruit bodies of abou

24-10-2024 14:39

Jean-Luc Ranger

Bonjour à tous,Découvert sur un terrain calcaire

23-10-2024 17:27

Enrique Rubio Enrique Rubio

Hi againThese tiny apothecia (100-200 µm) were gr

25-10-2024 02:15

B Shelbourne B Shelbourne

• Very few macro characters and I initially thou

26-10-2024 16:19

Juuso Äikäs

Yesterday I found some small white Helotiales grow

25-10-2024 22:17

Daniel Ghyselinck

Hi everybody,Found in mountain area at about 1000m

20-10-2024 16:48

Albert Meek

Globose sporesca. 16um, with  many drops. On bare

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Amicodisca sp. ?
Francois Guay, 31-10-2024 04:07
Francois GuayLast 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
Hans-Otto Baral
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.