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30-04-2025 01:29

Dactylellina candida/candidum?
David Chapados David Chapados

Hi, I found Dactylellina candida/candidum, recent

29-04-2025 09:13

Est-ce que Mollisia faginea existe?
Louis DENY

Bonjour forumVosges du sud, ballon d'Alsace altitu

28-04-2025 12:51

Pyrenopeziza atrata on Angelica silvestris
Thomas Flammer

Substrate: Angelica sylvesrisSpore mass: 8.4 - 11.

12-05-2013 13:31

Lophodermium on Picea abies
Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Dear mycologists,could someone give me an advice a

18-04-2025 23:16

Mollisia
Robin Pétermann Robin Pétermann

Bonjour, Voici une probable Mollisia, genre que j

26-04-2025 07:15

Paranectria?
Dragiša Savic

Hello everyone,the lichen is Candelariella aurella

27-04-2025 15:54

literature search
Martin Bemmann Martin Bemmann

Can somebody provide this article from a Leningrad

14-04-2025 15:11

Need help with 6 coprophilous species
Lennert Gees

Greetings!For my master's dissertation I work on c

26-04-2025 16:01

Michel Delpont
Jacques Fournier Jacques Fournier

J'ai le regret d'informer les membres du forum qui

26-04-2025 19:32

Arachnopeziza sp.
Francois Guay Francois Guay

I found these small Arachnopeziza sp. growing on d

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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
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  • message #66357
  • message #66357
  • message #66357
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.