19-12-2025 10:10
Patrice TANCHAUDBonjour, récolte réalisée en milieu dunaire, a
18-12-2025 17:23
Bruno Coué
Bonjour,je serais heureux d'avoir votre avis sur c
18-12-2025 21:17
Pol DebaenstThe identification took me to Byssonectria deformi
18-12-2025 18:07
Margot en Geert VullingsThese plumes were found on rotten wood.They strong
17-12-2025 18:35
Michel Hairaud
Bonjour à tous/Hi to everyone I am passing along
15-12-2025 15:48
Danny Newman
Melanospora cf. lagenaria on old, rotting, fallen
15-12-2025 15:54
Johan Boonefaes
Unknown anamorph found on the ground in coastal sa
15-12-2025 21:11
Hardware Tony
Small clavate hairs, negative croziers and IKI bb
15-12-2025 07:09
Danny Newman
indet. Rutstroemiaceae sp. on unk. fallen leavesMc
Hymenoscyphus phiala
Hans-Otto Baral,
03-11-2025 16:30
Hello
I want to ask you if you have found this year or in the last years Hymenoscyphus phiala on Alnus twigs. It is not rare and easily recognizable, but its nomenclature is very unclear. Besides, it is not clear if it is a Hymenoscyphus or perhaps a Cyathicula or Bisporella because of the heavily gelatinized ectal excipulum.
If you have preserved a specimen in the past years, I would be happy if a sequence could be obtained from it. To my knowledge there is no DNA available.
The original illustration in Flora Danica could represent a Hymenoscyphus indeed, but the aposize stated by Saccardo 1889 gives too large disc diameters of of 4-7 mm, unlike our fungus which has around 1-2.5 mm. What Rehm 1893 named H. phiala (from Wannsee, Sydow) has large oil drops in the spores and faintly amyloid ascus tips. I guess it was something like H. calyculus what Rehm (and perhaps also Vahl) was dealing.
Thanks
Zotto