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25-02-2014 19:00

Geopora clausa f. ellipsospora?
Illescas Tomás Illescas Tomás

Bonsoir à tous:J'ai récolté sous Pinus pinea, C

26-02-2014 18:53

Marchandiomyces aurantiacus (Lasch) Diederich & Etayo
Yannick Mourgues Yannick Mourgues

Bonsoir.Qui aurait ce document ?Diederich, Schulth

24-02-2014 20:17

Hyphodiscus/Cistella on old stromata of Hypoxylon
Enrique Rubio Enrique Rubio

Can anyone help with these gregarious, small (up t

26-02-2014 17:15

Trichopezizella horridula?
hannie wijers

Hello, I'd  like to have any help. On a piece of

26-02-2014 10:11

Dothideomycete ?
Garcia Susana

Hi all I found these perithecia growing together

25-02-2014 22:26

Unknown species on rosa?
Ralph Vandiest Ralph Vandiest

Hello,I found this black species on a kind of ros

05-02-2014 19:32

Leptospora?
DirkW DirkW

salut a tous,can anybody help me with this pseudot

25-02-2014 18:19

Articles by De Sloover
Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hi,could someone send me these articles, please?Ra

24-02-2014 14:27

Calycina ou Moellerodiscus ? - 50564
Roland Labbé

Bonjour ! Voici un disco stipité et inconnu de n

29-01-2014 14:14

Nova Hedwigia 60
Björn Wergen Björn Wergen

Hi there,does anyone have this one?Aptroot, A. (19

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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