03-03-2026 20:34
Miguel Ángel Ribes
Good eveningThese small, amphora-shaped perithecia
01-03-2026 18:02
Francois Guay
I found this mystery Helotiales on an incubated le
28-02-2026 14:43
Alain GARDIENNET
A new refrence desired :Svanidze, T.V. (1984) Novy
01-03-2026 18:46
Robin Isaksson
Hi! This species i se from time to time in the
27-02-2026 17:51
Michel Hairaud
Bonjour, Quelqu'un peut il me donner un conseil p
27-02-2026 16:17
Mathias Hass
Hi, Found this on Betula, rather fresh fallen twi
cf. Chalara fraxinea
Pavol Palo,
23-02-2021 20:18
may I ask you for help ? I would need some idea or opinion.
Found on dead wood Fraxinus excelsior. I don't know how the amorphous stage of Hymenoscyphus fraxineus (Chalara fraxinea) actually looks macroscopic. The fruiting body is fragile, and contains structures that are pictured. Found both in January but also in September
Regards
Pavol
Viktorie Halasu,
23-02-2021 20:30
Re : cf. Chalara fraxinea
Hi Palo,
have you tried (macro) reaction of the stroma(?) in KOH? To me it looks a bit like a germinating Hypoxylon.
Tori
have you tried (macro) reaction of the stroma(?) in KOH? To me it looks a bit like a germinating Hypoxylon.
Tori
Pavol Palo,
24-02-2021 18:59
Re : cf. Chalara fraxinea
Hi Tori,
Slightly yellow color reaction of "stroma" with 10% KOH. But I've also never not seen spore chaining with Hypoxylon sp. It looks more like chlamydiospores that produce conidia
regards
Pavol
Slightly yellow color reaction of "stroma" with 10% KOH. But I've also never not seen spore chaining with Hypoxylon sp. It looks more like chlamydiospores that produce conidia
regards
Pavol
Thorben Hülsewig,
24-02-2021 22:54
Re : cf. Chalara fraxinea
Hi Palo,
compare with Xylohypha nigrescens.
best regards,
Thorben
compare with Xylohypha nigrescens.
best regards,
Thorben
Pavol Palo,
24-02-2021 23:55
Re : cf. Chalara fraxinea
Hi Thorben,
Thank you, it looks like that's it
Sincerely
Pavol
Thank you, it looks like that's it
Sincerely
Pavol