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02-04-2015 22:07

En tronco de brezo (Erica)
Castillo Joseba Castillo Joseba

Me la mandan de GaliciaNo se por donde comenzarSal

16-04-2015 11:25

Hyaloscypha intacta o minuta ?
Garcia Susana

Hello, I found these apothecia on wood probably s

15-04-2015 22:57

Helotiaceae manuscript
Quijada Luis

Hi all, somebody has the following manuscript:Kor

15-04-2015 16:48

Capronia semiimmersa
Eduard Osieck

Capronia with partly submuriform spores: 16-19 x 5

12-01-2015 03:08

Octospora?
Nick Aplin

Salut Ascofrance, I wonder if anyone can help me

15-04-2015 17:38

Rhododendron fungi
Martin Pastircak

Hi, I'm looking for the following one publicatio

14-04-2015 17:56

PEZIZA sp.
Camille Mertens

Bonjour à tous. Trouvée entre les pavés d'une

14-04-2015 20:34

Mollisia?
Steve Clements

Hi,This is one which i thought would be relatively

12-04-2015 22:32

Asco stipité sur branche pourrie de peuplier (Populus)
Bernard CLESSE Bernard CLESSE

Bonsoir à tous,Voici un autre asco poussant sur b

13-04-2015 20:05

Hypocopra on horse dung
Enrique Rubio Enrique Rubio

Hi to everybody I know Hypcopra is a very difficu

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Rutstroemia firma ou Rutstroemia alni ?
Bernard CLESSE, 18-02-2022 16:40
Bernard CLESSESur brindille morte de feuillu (non identifié mais peut-être d'aulne glutineux ?) au fond d'une vallée.


Dans l'eau, les spores font (sans les appendices) : 20-24x7-8,5 µm et les asques : 150-181x10-15 µm.


Je n'arrive pas à choisir entre Rutstroemia firma et Rutstroemia alni.

Merci pour vos conseils !

Bernard

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Hans-Otto Baral, 18-02-2022 20:44
Hans-Otto Baral
Re : Rutstroemia firma ou Rutstroemia alni ?
Neither of them. I suspect R. bolaris on Carpinus. You must study the ectal excipulum, is it of isodiametrical cells or prismatica?

R. alni has spores *17-24 x 7-9 (matching yours, whereas R. firma has *15-23 x 4.5-6. R. alni occurs with multiguttulate spores as well as with two large and many small LBs. No idea if this has something to say. In R. firma I never saw multiguttulate spores, which are characteristic of R. bolaris.

One reason for R. bolaris is, that you found it now. It is a sprin fungus, though my notes say III-IV. R. alni and R. forma are autumn fungi.

Try to find out the host, with a radial section it is easy to recognize Alnus by the ladder-like perforations that Carpinus does not have.
Bernard CLESSE, 18-02-2022 21:01
Bernard CLESSE
Re : Rutstroemia firma ou Rutstroemia alni ?
Yes Zotto, you are absolutely right. I was too quick in my conclusions and I had forgotten Rutstroemia bolaris which I nevertheless collected several times. Andgelo Mombert also put me back on the right track.

Kind regards,

Bernard
Michel Hairaud, 20-02-2022 21:25
Michel Hairaud
Re : Rutstroemia firma ou Rutstroemia alni ?
Bonsoir, 
Of course I approve R. bolaris . I only want to add that we regularly collect it in Februrary (in West of France) and even earlier than Bernard's find 
Michel
Bernard CLESSE, 20-02-2022 21:30
Bernard CLESSE
Re : Rutstroemia firma ou Rutstroemia alni ?
Grand merci pour ton info sur la phénologie de cette espèce, Michel ! 

Je me rappellerai de cet élément important signalé par Zotto et que tu me confirmes aussi !

Bien amicalement,

Bernard
Michel Hairaud, 20-02-2022 22:15
Michel Hairaud
Re : Rutstroemia firma ou Rutstroemia alni ?
Donc à l'année prochaine même époque, Bernard sur ce forum ? -:) Michel