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31-03-2026 21:18

Miguel Ãngel Ribes Miguel Ángel Ribes

Good evening. oes anyone have the original descrip

31-03-2026 20:57

Stefan Blaser

Hello everybody, I hope somebody can help me with

26-03-2026 15:31

Ãke Widgren Åke Widgren

Hello,I found this one in October last year, on r

31-03-2026 16:20

Mlcoch Patrik Mlcoch Patrik

Hello, Please about help with determination. On

31-03-2026 08:19

Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pourriez-vous m'aider à

30-03-2026 12:18

Sylvie Le Goff

BonjourRécolté sur la base de Pteridium aquilinu

30-03-2026 12:03

William Slosse William Slosse

Hello all,On 27/03/26, in Kraaiveld in Wingene (Be

25-03-2026 10:35

Hulda Caroline Holte

Hello,I collected this species growing on a dead b

28-03-2026 17:41

Louis DENY

Bonjour forum,Mollisia trouvée sur tige de Molini

30-03-2026 09:53

Yanick BOULANGER

BonjourVoici des petites fructifications poilues s

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Cup on birch leaf
Guy Buddy, 29-05-2021 21:43
Hello, This fungus was growing on Betula leaves in a swampy area with rhododendron, thuga, viburnum, betula, alnus, symplocarpus, tussilago, and ferns etc. No crosiers, paraphyses filiform and slender. IKI - although it looks like a slight reaction from photos. No hairs or crystals observed. Spores mostly ellipsoid, measure ~ 6 x 4.5 um. Cranberry wilderness West Virginia USA, ~800 meters elevation. Any help appreciated, even if just a genus Devin
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Guy Buddy, 29-05-2021 21:47
Re : Cup on birch leaf
More pics
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Hans-Otto Baral, 30-05-2021 11:13
Hans-Otto Baral
Re : Cup on birch leaf
Well documented, but you don't have a pic of the spores under oil, and the paraphyses, in water?

It looks to me sclerotiniaceous, but it has no stipe! - No idea
Marek Capoun, 31-05-2021 19:44
Marek Capoun
Re : Cup on birch leaf
What about the first picture in the second batch, isn't it possible to see  crozier(s) there?
Lothar Krieglsteiner, 31-05-2021 20:26
Lothar Krieglsteiner
Re : Cup on birch leaf
Hello Guy, Zotto and Marek,
I am not sure at all - but what if the leaf would be not Betula but Alnus, and the stalks are present but short. Then it could perhaps be Ciboria conformata. Or maybe C.c. could also rarely grow on Betula?
If I make a big mistake amd miss something relevant you may fforgive me ...
Best, Lothar
Hans-Otto Baral, 31-05-2021 21:23
Hans-Otto Baral
Re : Cup on birch leaf
Hi Lothar, I think Alnus is a possibility, yes. But the croziers are in fact very clear, and C. conformata hasn't. The section and also the second photo clearly show that there is no stipe.
Viktorie Halasu, 01-06-2021 12:54
Viktorie Halasu
Re : Cup on birch leaf
Hello, 
could it be a Moellerodiscus? I don't know where exactly is the border between Ciboria and Moellerodiscus. 
Viktorie 

Hans-Otto Baral, 01-06-2021 17:06
Hans-Otto Baral
Re : Cup on birch leaf
I can't exclude that but I only know stipitate members of that genus.

The weak IKI reaction of the ascus tip would plead for that.