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18-05-2026 19:49

William Slosse William Slosse

Good evening all,recently I found a portion of a S

18-05-2026 12:43

Sylvie Le Goff

Bonjour à tousPuis je avoir votre aide sur ce que

18-05-2026 10:13

Lieve Deceuninck Lieve Deceuninck

Dear forum members,I identified this as the teleom

17-05-2026 22:09

éric ROMERO éric ROMERO

Bonjour tous, Je sollicite vos avis pour ce Molli

17-05-2026 19:05

Thomas Flammer

I have found this tiny 200 ym cup shaped apothecia

17-05-2026 16:41

Margot en Geert Vullings

We found this Lachnum on an old Rubus stem.Fruitbo

05-04-2026 22:46

Lothar Krieglsteiner Lothar Krieglsteiner

on wood of Ceratonia, Algarve, 3.4.2026.The color

15-05-2026 13:33

Sylvie Le Goff

Bonjour à tousJe serais très reconnaissante enve

16-03-2011 14:31

roman vargas alberto

Hi. I would like some opinion about this Peziza

14-05-2026 05:36

Ethan Crenson

Hi all,  I haven't paid much attention to Lachnu

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A giant Roseodiscus formosus?
François Bartholomeeusen, 09-05-2016 11:59
Dear forum,

I found a solitary fruiting body on a stump of Alnus covered with moss on a dike in a swamp of Alder.
FRB: 10 – 15 mm, turbinate to cushionlike with a short stalk covered with white hyphen, pink-ochre with lilac tint
Spores: elliptical, hyaline with a few drops on each pole : 8,99-14,58 x 4,09-5,64 µm;
Q= 2.51
Asci: 62,82-94,06 x 4,19-12,39 µm in melzer apex blue
Paraphyses: filiform, sometimes forked: 81,72-98,15 x 2,65-4,96 µm
Outer excipulum: with curved, septated hyphen
Inner excipulum: textura intricata

The FRB looks like a giant Roseodiscus formosus! Can someone help me?

Thanks in advance,
François Bartholomeeusen
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Hans-Otto Baral, 09-05-2016 12:18
Hans-Otto Baral
Re : A giant Roseodiscus formosus?
Dear Francois
look at the contents of the living paraphyses of your photo, these many droplets are very helpful and exclude a Roseodiscus. What you have is Cudoniella tenuispora, a bit too yellow but otherwise seems to me perfect.
Zotto
François Bartholomeeusen, 09-05-2016 21:07
Re : A giant Roseodiscus formosus?
Hello Zotto,

Thank you very much, I never would have considered Cudoniella...in my eyes it's still a giant!

François
Hans-Otto Baral, 10-05-2016 09:15
Hans-Otto Baral
Re : A giant Roseodiscus formosus?
1-1.5 cm is not untypical for this species. And it never grows in water.