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
28-10-2025 19:33
Nicolas Suberbielle
Bonjour à tous,Je voudrais votre avis sur cette r
Amphisphaeria sp.
Gernot Friebes,
07-03-2016 11:31
this species, which I assume is an Amphisphaeria, grows plentifully on a corticated branch of Fraxinus or Ulmus on the ground. I checked the paper by Wang et al. (2004) but couldn't find a species that fits well with this collection. The ascospores measure about 18–21 x 5,5–7 µm and appear to be smooth and without a sheath. Maybe someone has an idea!
Best wishes,
Gernot
Dok1-0001.pdf
Alain GARDIENNET,
07-03-2016 18:17
Re : Amphisphaeria on Fraxinus
Hi Gernot,
Have you looked towards Amphisphaeria umbrina (or A. cavata) ?
Alain
Gernot Friebes,
08-03-2016 12:26
Re : Amphisphaeria on Fraxinus
Thanks for your suggestion, Alain! I have no experience with A. umbrina but looking at the description and images in Wang et al. I feel like the ascospores of A. umbrina should be a bit darker brown than in my collection. Also it seems like the morphology of the ascomata is somewhat different but I think that could certainly vary to some degree...
Best wishes,
Gernot
Best wishes,
Gernot