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26-01-2026 11:49

Margot en Geert Vullings

We found this possible anamorph on a dead Cytisus

25-01-2026 23:23

Tomaz Vucko Tomaz Vucko

Hello! I found this species that resembles Delitsc

18-01-2026 12:24

Josep Torres Josep Torres

Hello.An anamorph located on the surface of a thin

25-01-2026 16:08

Malcolm  Greaves Malcolm Greaves

This Geoglossum had spores mostly 70-80 (87) with

23-01-2026 21:50

Cameron DK

I am looking for this please publication. is anyon

10-01-2026 20:00

Tom Schrier

Hi all,We found picnidia on Protoparmeliopsis mur

21-01-2026 19:55

Bohan Jia

Hi,  Could this be Nemania aureolutea? Or did I

21-01-2026 16:32

Gernot Friebes

Hi,I need your help with some black dots on a lich

21-01-2026 16:48

Gernot Friebes

Hi,after my last unknown hyphomycete on this subst

20-01-2026 17:49

Hardware Tony Hardware Tony

I offer this collection as a possibility only as e

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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.