09-01-2026 17:41
Arnold BüschlenHallo, F. dilatata wird von vielen Bryoparasiten
10-01-2026 20:00
Tom SchrierHi all,We found picnidia on Protoparmeliopsis mur
07-01-2026 22:22
Danny Newman
Tatraea sp. on indet. hardwood The Swag, Great Sm
10-01-2026 01:18
Danny Newman
cf. Neovaginatispora fuckelii on indet. shrub Pre
07-01-2026 10:24
Danny Newman
Pezicula sp. on indet. hardwood Appalachian Highl
09-01-2026 10:08
Blasco Rafael
Hola, en el mismo habitat que la anteriorRetamaDia
08-01-2026 21:22
Blasco Rafael
Hola, He recogido esta muestra de Orbilia sobre Re
07-01-2026 17:29
Marc Detollenaere
Dear Forum,On a barkless Populus I found some smal
10-11-2021 17:33
Riet van Oosten
Add-on topic http://www.ascofrance.com/forum/7059
07-01-2026 10:05
Danny Newman
cf. Chaetospermum on XylariaCosby Campground, Grea
is this a Hymenoscyphus on Nothofagus?
Götz Palfner,
30-06-2025 14:45
This is a quite common species on Nothofagus wood in southern Chile but I have not been able to identify it so far. Of course my first thought was Hymenoscyphus but what confuses me is that asci show no iodine reaction and the spores are wider than in all Hymenoscyphus species described by Gamundi & Romero (1998). Any suggestion?
Hans-Otto Baral,
30-06-2025 21:47
Re : is this a Hymenoscyphus on Nothofagus?
A negative reaction is no reason to doubt a Hymenoscyphus. But it would be helpful to study the ectal excipulum if prismatica or globulosa.
In her paper on Phaeohelotium nothofagi (2006) I also do not see a species with such wide spores.
It may be reminiscent of Phaeohelotium terrestre and allies. but these are mycorrhizal and the spores with a few large instead of many smaller LBs.
Götz Palfner,
01-07-2025 02:41
Re : is this a Hymenoscyphus on Nothofagus?
I will check the excipulum, thank you Hans-Otto!