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21-04-2026 22:14

Peziza
Margot en Geert Vullings

This cup fungus was found on April 10, 2026, on lo

22-04-2026 20:17

Pseudaegerita spec.
Marian Jagers Marian Jagers

Is anyone familiar with the Hyphomycetes genus Pse

22-04-2026 20:54

Pyrenopeziza on monocot.
Enrique Rubio Enrique Rubio

Hi to everybody.This Pyrenopeziza grew in moist le

22-04-2026 19:12

Poilu, violet avec KOH
Louis DENY

Bonjour forum.Trouvé à Belfort, est de la France

21-04-2026 21:00

Hymenoscyphus sp
Sylvie Le Goff

Bonjour à tousJe sollicite votre aide pour cet as

22-04-2026 01:06

Neonectria ou thelonectria ?
Richard VALERI Richard VALERI

Bonjour à tous.Je vous présente cette Nectria s.

21-04-2026 13:36

Wentiomyces-like on Salix
Gernot Friebes

Hi,I am out of ideas for this one. I collected Sal

21-04-2026 13:19

Lophodermium on Typha
Gernot Friebes

Hi,this Lophodermium on Typha has ascospores measu

21-04-2026 13:05

Hyphomycete on Typha
Gernot Friebes

Hi,this hyphomycete feels familiar but I was not a

20-04-2026 22:00

Trichobolus dextrinoideosetosus?
Malcolm Greaves Malcolm Greaves

These pale yellow, hairy ascos were growing on cul

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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.