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11-02-2026 22:15

William Slosse William Slosse

Today, February 11, 2026, we found the following R

11-02-2026 19:28

Lothar Krieglsteiner Lothar Krieglsteiner

on small deciduous twig on the ground in forest wi

25-04-2025 17:24

Stefan Blaser

Hi everybody, This collection was collected by JÃ

09-02-2026 22:01

ruiz Jose

Hola, me paso esta colección en madera de pino, t

10-02-2026 17:42

Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pourriez-vous me donner

10-02-2026 18:54

Erik Van Dijk

Does anyone has an idea what fungus species this m

09-02-2026 20:10

Lothar Krieglsteiner Lothar Krieglsteiner

The first 6 tables show surely one species with 2

09-02-2026 14:46

Anna Klos

Goedemiddag, Op donderdag 5 februari vonden we ti

09-02-2026 11:42

Ã…ge Oterhals

Hi forum, I found this Lachnum on old hardwood tw

02-02-2026 21:46

Margot en Geert Vullings

On a barkless poplar branch, we found hairy discs

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Roseodiscus aff. formosus
Gernot Friebes, 22-08-2021 10:52
Hi,

I collected this discomycete at approx. 2400 m a.s.l. and I think it has strong similarities with this Roseodiscus aff. formosus: https://drive.google.com/drive/folders/0B5SeyOEkxxZhXzZkNXRMSDFIVzA?resourcekey=0-XZegZviwmZP_xJiG2vNF5g

Spores measure about 10–13 x 3–3.5 µm, croziers are present, the asci are IKI bb.

Just wanted to share this interesting collection.

Best wishes,
Gernot
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DirkW, 22-08-2021 12:02
DirkW
Re : Roseodiscus aff. formosus
hi gernot,

nice find! I hadn't expected it on such altitute!

ceratodon purpureus is obvious ...

there seem to be two variants, which are imediately red or blue in lugol ...?

best wishes

dirk
Gernot Friebes, 22-08-2021 15:53
Re : Roseodiscus aff. formosus
Thank you, Dirk.
Yes, Zotto mentioned in this forum that Enrique's collection (with asci IKI bb) differed in the ITS compared to typical R. formosus, so maybe we are dealing with an undescribed species here.

Best wishes,
Gernot
Enrique Rubio, 22-08-2021 18:21
Enrique Rubio
Re : Roseodiscus aff. formosus
Hi Gernot
Here are my ITS and LSU sequences of this Roseodiscus
https://www.centrodeestudiosmicologicosasturianos.org/?p=29418
Enrique
Hans-Otto Baral, 23-08-2021 09:23
Hans-Otto Baral
Re : Roseodiscus aff. formosus
I agree. Is the moss also Ceratodon? It seems so.

Your spore measurements are not really concordant with the pics, either the spores are longer or narrower. Is there a scale to check?

Zotto
Gernot Friebes, 24-08-2021 14:24
Re : Roseodiscus aff. formosus
Thank you for the link, Enrique!

The moss has been confirmed as Ceratodon by a colleague who is a bryologist (a Bryum was also very close).

It is well possible that I did not cover the full spore size range since I only measured a few spores. Unfortunately I do not have a scale since I used someone else's microscope.

Best wishes,
Gernot
Hans-Otto Baral, 24-08-2021 17:32
Hans-Otto Baral
Re : Roseodiscus aff. formosus
thanks Gernot. I assume this sample is from the Alps?
Gernot Friebes, 24-08-2021 17:55
Re : Roseodiscus aff. formosus
Yes, from Vorarlberg (Kreuzjoch, also called Krüzjoch).