22-04-2026 01:06
Richard VALERI
Bonjour à tous.Je vous présente cette Nectria s.
21-04-2026 13:36
Gernot FriebesHi,I am out of ideas for this one. I collected Sal
21-04-2026 13:19
Gernot FriebesHi,this Lophodermium on Typha has ascospores measu
21-04-2026 13:05
Gernot FriebesHi,this hyphomycete feels familiar but I was not a
20-04-2026 22:00
Malcolm Greaves
These pale yellow, hairy ascos were growing on cul
19-04-2026 21:23
Steve ClementsBonjour, I found this anamorphic fungus on old pl
19-04-2026 20:46
Steve Clements1 mm diameter approx spherical conidiophores on pl
12-04-2026 17:56
Hardware Tony
Found on dead stems in February earlier this year
"Nectria" - for a lack of better knowledge...
Stefan Blaser,
31-03-2026 20:57
Hello everybody,
I hope somebody can help me with this collection:
Substrate: On dead, lying stems of Cirsium spinosissimum (in alpine environment).
Macro: Rather hard and dense pale orange to pink emerging Stromata up to 2.5 x 1.5 mm in size. Pinkish orange perithecia (dark reddish-orange when dry, without colour change in KOH) with an individual diameter of 0.15-0.25 mm are seated on the stroma. Perithecia have a whitish tomentose cover.
Micro: Perithecia surface (partly) covered by short hairs of about 5-25 x 3-4 µm. Spores (only within Asci and probably not mature!) 8.5 – 14 x 3.5-4.5 µm, 1-septate, hyaline, smooth(?). Asci 50-70 x 5-6 µm.
Many thanks for any ideas,
Stefan
