22-04-2026 01:06
Richard VALERI
Bonjour à tous.Je vous présente cette Nectria s.
21-04-2026 22:14
Margot en Geert VullingsThis cup fungus was found on April 10, 2026, on lo
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
ID Help Hymenoscyphus
Nogueira Héctor,
18-11-2025 13:59
Hymenoscyphus vitigenus?
Hello!
Specimens growing on indeterminate leaves in a mixed forest of Quercus robur, Alnus sp., Populus sp., and other riparian vegetation.
Positive reaction of the asci apex in Lugol's iodine.
I haven't obtained any free spore print, but I believe I observed mature spores, crusted in the center, with a septum.
(15.2) 16.3 - 20.3 (21.5) × (4.3) 4.8 - 5.7 (6.2) µm
Q = (2.9) 3 - 4 (4.5) ; N = 19
Me = 18.5 × 5.2 µm ; Qe = 3.6
Hans-Otto Baral,
18-11-2025 15:16
Re : ID Help Hymenoscyphus
My guess is H. caudatus. The spores are only faintly scutuloid which is possible in this variable species. H. vitigenus is unclarified, it is heterogeneous in the type of the perhaps identical H. hyalopes (see my paper on H. menthae (2015, Ascomycete.org, 7 (6) : 255-287).
Nogueira Héctor,
18-11-2025 16:33
Re : ID Help Hymenoscyphus
At first I thought it was H. caudatus, but I followed a key that led me to H. vitigenus, and now I have my doubts. Thank you very much for your help.