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20-06-2025 08:33

Josep Torres Josep Torres

Hello.Small, blackish, mucronated surface grains s

28-06-2025 16:00

Josep Torres Josep Torres

Hello.A tiny fungus shaped like globose black grai

04-07-2025 12:43

Castillo Joseba Castillo Joseba

me mandan el material seco de Galicia (España) 

03-07-2025 18:40

Castillo Joseba Castillo Joseba

me mandas el material seco de Galicia (España) re

03-07-2025 20:08

Francois Guay Francois Guay

I found this interesting yellowish asco growing on

01-07-2025 23:37

Josep Torres Josep Torres

Hello.A Pleosporal symbiotic organism located and

02-07-2025 17:26

Yanick BOULANGER

BonjourRécolté sur une brindille au fond d'un fo

02-07-2025 18:45

Elisabeth Stöckli

Bonsoir,Sur feuilles d'Osmunda regalis (Saulaie),

02-07-2025 09:32

Nicolas VAN VOOREN Nicolas VAN VOOREN

Hello, bonjour.Here is the paper I'm searching for

30-06-2025 16:56

Lydia Koelmans

Please can anyone tell me the species name of the

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Grey disco
Yatsiuk Iryna, 09-05-2013 10:57
Yatsiuk IrynaHello, friends!
Last summer I collected and studied microscopically this specimen, but I still have no idea about it.
It was one grey apothecium ca 0,7 cm in diameter, collected on decayed deciduous unidentified wood.
Asci with croziers, apex blueing in Melzer's reagent. Unfortunately I have not measured them at that time, but I will do it soon, when access to microscope and a camera.
Spores are 20-27*9,3-10,7 um, apiculate, apiculi are 3-3,5 um long, tapering, with 1,2 or more large guttules.
What it can be?
Sincerely,
Irina
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Hans-Otto Baral, 09-05-2013 11:00
Hans-Otto Baral
Re : Grey disco
Peziza apiculata or similar species, probably
DirkW, 09-05-2013 11:12
DirkW
Re : Grey disco
hi irina,

i think its a thecotheus, perhaps rivicola? the spores are looking fine-wartet ...

best


dirk
Neven Matocec, 09-05-2013 11:24
Neven Matocec
Re : Grey disco
Hi Irina, can you tell whether your spore length range includes apiculi or not...

Cheers,
 Neven
Hans-Otto Baral, 09-05-2013 11:36
Hans-Otto Baral
Re : Grey disco
Thecotheus rivicola and holmskjoldii have roundish polar caps, not acute apiculi
Zotto
Neven Matocec, 09-05-2013 12:26
Neven Matocec
Re : Grey disco
Hi Zotto, Irina & Dirk. I agree! It cannot be genus Thecotheus. Note also the pigmentation of hymenial elements, also thecothei do not have lipid bodies in spores...

Neven
DirkW, 09-05-2013 12:28
DirkW
Re : Grey disco
yes, i was too fast with thecotheus ... trapped by combination of grey colours, j+ and appendixes.

best

dirk
Yatsiuk Iryna, 09-05-2013 17:07
Yatsiuk Iryna
Re : Grey disco
Hello, Dirk, Zotto and Neven!
Thank you for your answers.
Neven, the spore length includes apiculi.

With best wishes,
Irina
Yatsiuk Iryna, 09-05-2013 17:22
Yatsiuk Iryna
Re : Grey disco
Zotto, my specimen seems to be very close to Peziza apiculata! I was confused with grey colour and small size of that single fruitbody. 
As Dirk said, spores really are minutely warted, but it fits well to P.apiculata. 

Best regards,
Irina
René Dougoud, 10-05-2013 07:59
Re : Grey disco
Chers Tous,

Voici, une photo de P apiculata et sa micro (j'espère que ça passera). A noter que les apotécies sont d'abord vert olive, puis se colorent assez rapidement de gris à noir.

Cordialement

René
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Yatsiuk Iryna, 19-05-2013 23:35
Yatsiuk Iryna
Re : Grey disco
Hi, Rene
On your picture are shown very interesting ornamentation details. In my specimen I saw only single apiculus on each spore end (or no apiculus at all). I will now that there could be more. 
With best regards,
Irina