04-11-2025 12:43
Edvin Johannesen
Hi! One more found on old Populus tremula log in O
04-11-2025 09:07
Hello.A suspected Hymenoscyphus sprouting on a thi
03-11-2025 21:34
Edvin Johannesen
These tiny (0.4-0.5 mm diam.), whitish, short-stip
28-10-2025 15:37
Carl FarmerI'd be grateful for any suggestions for this strik
03-11-2025 16:30
Hans-Otto Baral
Hello I want to ask you if you have found this ye
28-10-2025 19:33
Nicolas Suberbielle
Bonjour à tous,Je voudrais votre avis sur cette r
31-10-2025 09:19
Lothar Krieglsteiner
Can somebody provide me with a file of:Rogerson CT
Gelatinous hyaline discs (Exidia ?)
Stephen Martin Mifsud,
27-11-2017 17:09
Dear friends, I have come across what I believed to be an ascocarp but after microscopical investigations, I don't what it is composed of!!!The bodies were jelly-like and very difficult to slice, hyaline or slightly pulverous above, astipitate, cushion-like bodies sitting on the surface of a decaying twig, sometimes coalescing to form colonies. Some individuals had a pale ochraceous granule at the centre which under the microscope seems to be abiotic and disintegrate into amorphous particles
When finally I sliced a section, I could see a meshwork of numerous 'hyphae' without any special reproductive organs. No spores could be detected.
Is it an Exidia?
Sliced section shows a central amorphous body suspended in a loose gelatinous tissue composed of loose hyphae in a meshwork network (very thin - 1um ) and an outer layer made up of a different denser tissue, but without any special organs (eg asci)
Lothar Krieglsteiner,
27-11-2017 17:13
Re : Gelatinous hyaline discs (Exidia ?)
Hello Stephen,
although the micros are very small, I am quite sure that your fungus is not an ascomycete but a Heterobasidiomycete.
Best regards, Lothar
Chris Yeates,
27-11-2017 17:30
Stephen Martin Mifsud,
27-11-2017 18:17
Re : Gelatinous hyaline discs (Exidia ?)
Dear friends,
I agree perfectly - I just examined better the slide and although I could not see the spectacular basidia of this genus, there are 'basidioles' which are matching with those of Exidia sp. The central calcium oxalate deposit is typical of Exidia nucleata:
http://cemachampi.blogs.sudouest.fr/archive/2014/02/20/etude-exidia-nucleata-une-exidie-a-concretions-d-oxalate-de-1017337.html
I washed the specimen in KOH and maybe I washed away the spores from the surface. I'll prepare a slide from a raw specimen. COOL!












