29-11-2024 21:47
Yanick BOULANGERBonjourJ'avais un deuxième échantillon moins mat
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
27-02-2026 12:56
Åge OterhalsFound on fallen cones of Pinus sylvestris in midle
27-02-2026 11:21
Yannick Mourgues
Hi to all. Here is a specie that can may be relat
26-02-2026 15:00
Castillo Joseba
Me mandan el material seco de Galicia, recolectada
24-02-2026 11:01
Gernot FriebesHi,found on a branch of Tilia, with conidia measur
23-02-2026 11:22
Thomas Læssøehttps://svampe.databasen.org/observations/10584971
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