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15-04-2026 19:33

Fátima Durán Manzaneque

¡Hola! Necesito ayuda, encontré este ascomiceto

14-04-2026 05:32

Ethan Crenson

Hi all, A few weeks back a friend pointed out som

14-04-2026 21:52

Gernot Friebes

Hi,found on dead leaves of Carex elata. Conidia: 4

14-04-2026 20:31

Gernot Friebes

Hi,can this be Psilachnum lateritioalbum on Phragm

12-04-2026 17:56

Hardware Tony Hardware Tony

Found on dead stems in February earlier this year

12-04-2026 15:52

Gernot Friebes

Hi,I'm looking for help with this anamorph collect

12-04-2026 12:22

William Slosse William Slosse

In a dune grassland in Oostduinkerke (Belgium), on

11-04-2026 15:45

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Please, could anyone send me this paper?Moyne G.,

11-04-2026 13:34

Artem Ptukha

Hello, I am seeking assistance with the identific

11-04-2026 10:42

Castillo Joseba Castillo Joseba

Me mandan el material de Galicia, España, recolec

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Hélotiale blanche sur Sambucus racemosa
Bernard CLESSE, 10-02-2026 17:42
Bernard CLESSEBonjour à toutes et tous,

Pourriez-vous me donner votre avis sur cette Hélotiale récoltée sur bois pourri de sureau à grappes ?

Merci d'avance !

Bernard
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Hans-Otto Baral, 10-02-2026 20:22
Hans-Otto Baral
Re : Hélotiale blanche sur Sambucus racemosa
How old ist this find that you did not study it fresh?

I only know Hymenoscyphus geogenus with these characters. I found it mostly on Quercus but rarely on other angiosperm trees (Fagus, Betula, ...).

Usually there is a pale blue apical ring. Did you use MLZ? That might prohibit the reaction.
Bernard CLESSE, 10-02-2026 20:48
Bernard CLESSE
Re : Hélotiale blanche sur Sambucus racemosa
Thanks so much for your reply, Zotto.

Indeed, I used Melzer and the reaction was very, very weak, so I added J- but it was very weakly J+.

Best regards,

Bernard

Hans-Otto Baral, 10-02-2026 20:54
Hans-Otto Baral
Re : Hélotiale blanche sur Sambucus racemosa
Good! If you wish you can send me the collection data. I once studied the type of the synonym Helotium longisporum Schweers, maybe I will publish at some time on this species.
Bernard CLESSE, 10-02-2026 20:59
Bernard CLESSE
Re : Hélotiale blanche sur Sambucus racemosa
OK Zotto, I"ll do it !

Bernard