30-06-2025 14:45
Götz Palfner
This is a quite common species on Nothofagus wood
30-06-2025 12:09
Edvin Johannesen
This tiny, rather "rough" erumpent asco was found
30-06-2025 16:56
Lydia KoelmansPlease can anyone tell me the species name of the
30-06-2025 06:57
Ethan CrensonHi all, Another find by a friend yesterday in Bro
25-06-2025 16:56
Philippe PELLICIERBonjour, pensez-vous que S. ceijpii soit le nom co
29-06-2025 18:11
Ethan CrensonHello all, A friend found this disco yesterday in
28-06-2025 16:00
Josep Torres
Hello.A tiny fungus shaped like globose black grai
27-06-2025 14:09
Åge OterhalsI found this pyrenomycetous fungi in mountain area
Rutstroemia firma ou Rutstroemia alni ?
Bernard CLESSE,
18-02-2022 16:40
Sur 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
Hans-Otto Baral,
18-02-2022 20:44
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
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
Kind regards,
Bernard
Michel Hairaud,
20-02-2022 21:25
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
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
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
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
Re : Rutstroemia firma ou Rutstroemia alni ?
Donc à l'année prochaine même époque, Bernard sur ce forum ? -:) Michel