20-12-2025 23:08
Patrice TANCHAUDBonsoir, récolte sur sol sablonneux dans l'arriÃ
20-12-2025 15:47
Mirek GrycHi.These grew on pine wood that was heavily covere
18-12-2025 21:17
Pol DebaenstThe identification took me to Byssonectria deformi
15-12-2025 07:09
Danny Newman
indet. Rutstroemiaceae sp. on unk. fallen leavesMc
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 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
Discostroma on Rubus idaeus
Björn Wergen,
24-05-2013 18:09
Hi there,here is another pyrenomycete growing on Rubus idaeus stems with small, black perithecia, embedded into the surface and covered with clypeus-like structures (Clypeus?). Perithecia are characteristicly amber coloured inside, as I have seen it in species of Discostroma.
The species has 3septate spores of 12-15x4-4,5µm size, hyalin, smooth. Asci uniseriate, unitunicate, IKI- (or very very weak +).
I have tried keys for Discostroma but had no success with it, as I came to "D. callistemonis", which has a different substrate :(
Thanks in advance!
All the best
björn
