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23-06-2025 13:25

Enrique Rubio Enrique Rubio

I would like to hear your opinion on this Scutelli

25-06-2025 16:56

Philippe PELLICIER

Bonjour, pensez-vous que S. ceijpii soit le nom co

25-06-2025 16:25

Thomas Flammer

My first impression was sth like Rutstromeia, but

24-06-2025 22:29

Danny Newman Danny Newman

Hello AscoFrance, I have recently photographed, c

24-06-2025 14:00

Warre Van Caenegem

I'm currently in Croatia doing fieldwork that is n

23-06-2025 04:03

Francois Guay Francois Guay

Hi, I found this tiny sulfur yellow asco growing o

22-06-2025 13:52

DirkW DirkW

Dear friends,anyone out there with this paper?:DOU

26-05-2025 18:09

Henk Remijn

Good day,In a burned forest near Hulst on the bord

21-06-2025 22:27

David Chapados David Chapados

Hi,Is this a Calycina? C. herbarum?Growing on an h

20-06-2025 08:33

Josep Torres Josep Torres

Hello.Small, blackish, mucronated surface grains s

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Rutstroemia maritima
Miguel Ángel Ribes, 27-02-2013 20:55
Miguel Ãngel RibesGood evening

I have this species from Parador de Mazagon, 15.01.2012 and 12.01.2013, on a small stem, perhaps Ammophila arenaria, 4-6 mm.

Spores (1000x, H2O, live)
(12.8) 14.0 - 16.8 (17.6) x (5.6) 6.0 - 6.8 (7.1) µm
Q = (1.9) 2.1 - 2.7 (2.8) ; N = 82
Me = 15.3 x 6.4 µm ; Qe = 2.4

I would like to confirm it is Rutstroemia maritima and to know nearest species.

Thank you.
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Miguel Ángel Ribes, 27-02-2013 21:01
Miguel Ãngel Ribes
Re : Rutstroemia maritima
Asci with croziers, euamyloid. Paraphysis septated.
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Hans-Otto Baral, 27-02-2013 21:04
Hans-Otto Baral
Re : Rutstroemia maritima
Hi Miguel

to clarify this requires two details:

1. croziers

2. iodine reaction

I suspect Rutstroemia calopus, typical of Poaceae. 

Zotto
Miguel Ángel Ribes, 27-02-2013 21:08
Miguel Ãngel Ribes
Re : Rutstroemia maritima
Subhymenium, excipulum and margen.

Best wishes.
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Miguel Ángel Ribes, 27-02-2013 21:10
Miguel Ãngel Ribes
Re : Rutstroemia maritima
Hi Zotto

You are very, very fast. Your answer arrived before my last pictures, jejeje.

Croziers +
Euamyloid asci

Thanks
Hans-Otto Baral, 27-02-2013 21:15
Hans-Otto Baral
Re : Rutstroemia maritima
Nice photos! The croziers are clearly seen on the 2nd and 3rd of your pics, but not the striking protuberance at the separated asci (which is also present in paludosa) but with less contrast and when still attached. What I miss are crystals in the texture or on the surface. Maybe there are but rather small?

So it is calopus in my opinion. R. paludosa is on Cyperaceae and Juncaceae and has no croziers. R. maritima I do not understand. One collection which I studied named ?maritima  had inamyloid asci, croziers, and grew on Ammophila. Maybe this was only an aberrant from of calopus. Dennis reports amyloid asci for maritima.

Zotto
Miguel Ángel Ribes, 27-02-2013 21:45
Miguel Ãngel Ribes
Re : Rutstroemia maritima
Are this the crystals? Very, very few.

Sorry, I don't understand "striking protuberance at the separated asci", I have more croziers pictures.

Yes, I saw your collection "R ? maritima HB6860 E, 10.II.01 from Spain", but I did not notice it is IKI - 

So, don't exists R. maritima?

I forgot to said it was on dunes.

Best wishes.
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Hans-Otto Baral, 27-02-2013 21:52
Hans-Otto Baral
Re : Rutstroemia maritima
Yes, now I see some crystals. And nice croziers. What I meant: The two ascus pics before the amyloid ascus apices show two +/- isolated asci with a prominent basal protuberance. This is not a proof for croziers, because it also occurs in paludosa.
Miguel Ángel Ribes, 27-02-2013 23:16
Miguel Ãngel Ribes
Re : Rutstroemia maritima
Ok, now I understand it, I thought that big protuberance was a "extreme" crozier.

Any paper about R. calopus, R. paludosa, please? The only one I have "Le champignon du mois (12). Urs Roffler, 2002 SZP/BSM: 235-238" write Rutstroemia calopus (Fr.) Rehm = Rutstroemia paludosa (Cash & Davidson) Groves & Elliott.

Thanks.
Hans-Otto Baral, 28-02-2013 18:28
Hans-Otto Baral
Re : Rutstroemia maritima
Hi Miguel

The character of croziers is unreported in the literature as far as I know, it was a discovery of my own and was confirmed be rather many records from various people. From the substrate of the type collections I concluded for the two names: Groves & Elliott 1961 say Carex for paludosa, For calopus I do not remember, but someone should have treated it originally on Poaceae.

Zotto
Miguel Ángel Ribes, 28-02-2013 21:31
Miguel Ãngel Ribes
Re : Rutstroemia maritima
Hi Zotto

Thnak you again.

Somebody has the original description of R. calopus and R. paludosa?

See you.
Martin Bemmann, 28-02-2013 22:02
Martin Bemmann
Re : Rutstroemia maritima
Hi Miguel,

easy for paludosa: http://www.cybertruffle.org.uk/cyberliber/59350/0025/004/0271b.jpg?

calopus you will find here on P. 307: http://tiny.cc/d0h8sw?

Best regards

Martin
Hans-Otto Baral, 28-02-2013 23:46
Hans-Otto Baral
Re : Rutstroemia maritima
Yes, thanks Martin. The substrate given by Fries is quite dubious :-(

In my database I have some further possible names for this complex:
Helotium rubescens Crouan   1867
Rutstroemia henningsiana Ploettn. 1899
Ciboria blanda Svrcek 1958
Rutstroemia plana DM Hend. 1970

so anybody willing to check all these from type material? :-) 

Zotto
Miguel Ángel Ribes, 28-02-2013 23:53
Miguel Ãngel Ribes
Re : Rutstroemia maritima
Thank you Martin

I am not good finding papers.

Best regards.
Miguel Ángel Ribes, 01-03-2013 00:29
Miguel Ãngel Ribes
Re : Rutstroemia maritima
That is a job for expert mycologist, Zotto.
Guy Garcia, 01-03-2013 12:27
Re : Rutstroemia maritima
Hi Zotto,

If you possess the short publication of Henderson where Rutstroemia plana is described, you could send it to me! Thank you in advance.
The reference is
HENDERSON D.M. 1970 Notes on three British ascomycetes. Notes Roy. Bot. Gard. Edinb. 30 (1) : 203-205.
This collection seems accessible to this address
http://www.europeana.eu/portal/record/08705/F8062EF02E59F19B0218323BAD9F890C8EE0702A.html?query=%22notes+from+the+royal+botanic+garden+edinburgh%22+1970
but I am not authorized in the download
Best, Guy
Hans-Otto Baral, 01-03-2013 12:37
Hans-Otto Baral
Re : Rutstroemia maritima
I regret I do not have. I see I was referring to the docu in Ellis & Ellis p. 542, on Eleocharis, which looked to me quite as R. calopus.

Zotto
Guy Garcia, 01-03-2013 13:01
Re : Rutstroemia maritima
Maybe a colleague of the forum can send it to us?