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07-12-2015 14:17

Una Peziza a latice giallo-verdastro con croziers
Zugna Marino Zugna Marino

Buon giorno a tutti, ad un primo momento, non ess

29-01-2026 10:04

Séminaire Ascos en Belgique
Jean-Paul Priou Jean-Paul Priou

Bonjour à tous, Marcel LECOMTE président de L'A

21-01-2026 16:32

Lichenicolous coelomycete
Gernot Friebes

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

17-11-2009 22:22

Peziza avec latex
Pablo Chacón Pablo Chacón

Bonne nuit, Voir si vous m'avez élaguée appor

25-11-2012 20:32

Otidea o Peziza?
Bometon Javier Bometon Javier

Ascomas cupoliformes abiertos lateralmente, himeni

25-01-2026 16:08

Geoglossum
Malcolm Greaves Malcolm Greaves

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

27-01-2026 11:43

DNA match
Malcolm Greaves Malcolm Greaves

Is anyone with experience of DNA testing able to t

26-01-2026 11:49

Anamorph on Cytisus
Margot en Geert Vullings

We found this possible anamorph on a dead Cytisus

25-01-2026 23:23

Delitschia/Lojkania? on wood
Tomaz Vucko Tomaz Vucko

Hello! I found this species that resembles Delitsc

18-01-2026 12:24

Anamorph on an olive tree
Josep Torres Josep Torres

Hello.An anamorph located on the surface of a thin

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roseodiscus sp?
Robin Isaksson, 07-12-2020 21:25
Robin IsakssonHi!

Found this one in sweden some days ago.

that that it would be R. formosum but asci react blue not red in Lugols.

Spores 10-11 x 3-3,5 um with some olidrops. some spores twocelled. Some sporeends react red with lugols as in formosum, maybe all but hard see.
I see on the web its a collection from spain that have blue reactions on asci.
maybe same or is it a variation on formosum?

host moss is Ceratodon purpureus.

anyone knows moore about it?

regards
  • message #66357
  • message #66357
  • message #66357
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Hans-Otto Baral, 08-12-2020 09:13
Hans-Otto Baral
Re : roseodiscus sp?
Yes, there is a collection by Enrique, ERD-6978 on Ceratodon purpureus, which reacts blue (BB) and deviates from R. formosus by 2.7% in the ITS. Other differences are hard to see.

Since typical R. formosus reacts pure red (type RR), there seems indication that your sample belongs to the Spanish one.

Did you collect yours in Scandinavia?
Robin Isaksson, 08-12-2020 17:17
Robin Isaksson
Re : roseodiscus sp?
Hi!

As you say it was like any another r. Formosum But Asci reactions are blue instead.

Yes the find is from Halland in Sweden, scandinavia on sandy basepoor habitat.

This is great, i will put it in the herbaria uppsala as roseodiscus sp.

Best regards,

Robin
Hans-Otto Baral, 08-12-2020 17:50
Hans-Otto Baral
Re : roseodiscus sp?
Thanks! It is a pity that you did mocroscopy only on the dried sample.