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10-09-2025 17:18

Blasco Rafael Blasco Rafael

Hola, encontre este estiercol de vaca estos apotec

11-09-2025 16:57

Jason Karakehian Jason Karakehian

Our revision of Marthamycetales (Leotiomycetes) is

02-09-2025 11:34

Thomas Læssøe

https://svampe.databasen.org/observations/10527903

10-09-2025 23:53

Marcel Heyligen Marcel Heyligen

Found on Robinia pseudoacasia together with Diapor

07-09-2025 08:19

Josep Torres Josep Torres

Hello.Tiny pinkish discomycetes, photographed and

09-09-2025 12:07

Edmond POINTE Edmond POINTE

Bonjour amis mycologues,Trouvé sur moquette de ch

08-09-2025 19:07

ruiz Jose

Hola me pasan esta recolecta en madera de fraxinus

03-09-2025 21:59

Philippe PELLICIER

La Léchère, Col de la Madeleine, alt 1970m, au s

06-09-2025 21:40

David Chapados David Chapados

Hi, Does somebody know the genus that has those b

07-09-2025 11:34

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello,I have identified this fungus as Hymenoscyph

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Roseadiscus formosus?
William Slosse, 26-12-2019 16:29
William SlosseHello forum,

on 19-12-2019 I found on an old dune at the Belgian coast this tiny rosy species growing between Tortula ruralis.
I thought it might be a Roseodiscus but the parafyses aren't bent and branched at the end.


Apothecia: up to 4mm Ø and smooth
Stalk: up to 15mm long and darkening towards the base (older species)
Asci: J+ (Melzer) with croziers
Spores: Av (19.23-) 16.30 (-14.84) x (10.19-) 8.42 (-7.43); N= 40. Measurements in water. Ellipsoid to fusoid; smooth; hyalien. Mature spores are one-septated
Paraphyses: straight, slender and apically lightly swollen. Septated. Only a few were branched at the base.


Has someone any idea about this species?


Regards,


William

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Hans-Otto Baral, 26-12-2019 16:49
Hans-Otto Baral
Re : Roseadiscus formosus?
Hi

The apical ring type clearly places this fungus in the Sclerotiniaceae.

Did you notice that 4 spores are smaller than the others? It should be Sclerotinia trifoliorum

Zotto
William Slosse, 26-12-2019 18:44
William Slosse
Re : Roseadiscus formosus?
Thx for your help, Zotto.

Peter Püwert, 26-12-2019 19:19
Peter Püwert
Re : Roseadiscus formosus?
Hi, attention should also be paid to black sclerotia.

Greetings Peter.
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William Slosse, 26-12-2019 22:20
William Slosse
Re : Roseadiscus formosus?
Very nice to mention this, Peter.
This species has been reported on the Belgian coast only a seven times during the past 10 years.
It has surely been overlooked all the time.

Regards,
William