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
28-10-2025 15:37
Carl FarmerI'd be grateful for any suggestions for this strik
03-11-2025 16:30
Hans-Otto Baral
Hello I want to ask you if you have found this ye
Acorn fungus
Guy Buddy,
19-10-2020 22:24
This is a common cup on Quercus acorns in Pennsylvania, USA. Medullary excipulum looks textura intricata while ectal looks angular to globose. Paraphyses filiform, septate, some forked, with small oil drops. Asci weak IKI +, no croziers. Spores measure 35.4 × 6.1 µm.
Thanks,
Devin
Guy Buddy,
19-10-2020 22:25
Re : Acorn fungus
more pics
Hans-Otto Baral,
20-10-2020 08:40
Re : Acorn fungus
We had this fungus a few days ago: http://www.ascofrance.fr/search_forum/65321
It is Phaeohelotium geogenum (Cooke) Svrcek & Matheis, but perhaps better placed in Cudoniella.
The type is from near Paris and the type of the synonym Helotium longisporum Schweers from Netherlands.
Typically it grows on remnants of Quercus, preferably acorns.
From your scale I find the spores 30-38 x 5.3-6 µm.
Zotto
Guy Buddy,
20-10-2020 15:49
Re : Acorn fungus
Thanks Zotto for sharing your braincyclopedia.
Devin
Devin