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29-05-2021 21:43

Guy Buddy

Hello, This fungus was growing on Betula leaves in

27-05-2021 16:17

Thomas Læssøe

https://svampe.databasen.org/observations/10122454

01-06-2021 09:03

Thomas Læssøe

https://svampe.databasen.org/observations/10185810

29-05-2021 21:54

Guy Buddy

Hello, This fungus was growing in a swampy area wi

19-05-2021 16:44

Castillo Joseba Castillo Joseba

Recolectada en Galicia en corteza de AcaciaPienso

30-05-2021 13:32

Enrique Rubio Enrique Rubio

Dear friendsDo you have some idea that could help

30-05-2021 13:26

Viktorie Halasu Viktorie Halasu

Hello forum,would anyone please have the descripti

28-05-2021 21:12

Juuso Äikäs

These were growing with the yellow ones that I add

28-05-2021 18:41

Juuso Äikäs

Today I found some nice yellow Lachnums growing on

27-05-2021 21:01

Lothar Krieglsteiner Lothar Krieglsteiner

found today (27.5.2021) in the Eifel Nationalpark,

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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.