09-11-2025 13:20
Josep Torres
Hello.A tiny ascomycete, appearing as erupting gra
08-11-2025 00:29
Francois Guay
I found this species in Quebec, Canada, on herbace
04-11-2025 09:07
Josep Torres
Hello.A suspected Hymenoscyphus sprouting on a thi
04-11-2025 12:43
Edvin Johannesen
Hi! One more found on old Populus tremula log in O
03-11-2025 21:34
Edvin Johannesen
These tiny (0.4-0.5 mm diam.), whitish, short-stip
Hymenoscyphus with sheaths
Khomenko Igor,
10-01-2021 17:40
Hi,I have this Hymenoscyphus that I want to call H. macroguttatus, but spores with sheaths.
https://inaturalist.ca/observations/54700515
On a small herb twig on the ground in a wet area.
Ascospores 19-21x3.7-4.5um.
Asci IKI+b, croziers(+), 69-77x7.6-8.2um
Paraphyses cylindrical 2-2.2um width, septated with a fork at the base with large VBs in the top segments.
The medullary excipulum has ?intricata textura, very gelatinous and with plenty of crystals.
Best regards,Igor
Hans-Otto Baral,
10-01-2021 18:16
Re : Hymenoscyphus with sheaths
Hi Igor
such sheaths are very common in Helotiales.
Loks like an Ombrophila indeed. In my O. rivulorum folder I have comparable finds, some almost attaining spore length of yours.
Zotto
Khomenko Igor,
10-01-2021 18:24
Re : Hymenoscyphus with sheaths
Thank you very much Zotto, it explains a lot.