22-05-2020 17:45
Juuso ÄikäsYesterday I was searching for fungi from the botto
20-05-2020 11:42
Mirek GrycHello allI have no experience with this type at al
22-05-2020 12:15
Joop van der Lee
Pseudothecia are deeply emmersed with only the nec
21-05-2020 18:37
Andgelo Mombert
Bonsoir, Sur branche morte aérienne de Viburnum
21-05-2020 17:22
Bernard CLESSE
Trouvé récemment dans une petite clairière d'un
18-05-2020 20:32
Andgelo Mombert
Bonsoir, Sur branches mortes de Lonicera nigra (4
21-05-2020 09:26
Castillo Joseba
Me envian muestra seca de esta especie, parece una
06-09-2017 19:13
Miguel Ángel Ribes
Good eveningGrowing on Equisetum arvense, in Bygdi
Hymenoscyphus vernus?
Juuso Äikäs,
22-05-2020 17:45
The asci seemed to be without croziers. I got almost no reaction with Melzer's but with Lugol's there was a fairly clear blue reaction with the apical pore.
Spore measurements: (7.6) 8.3 - 12.2 (13.3) × (3.4) 3.5 - 4.3 (4.4) µm
Q = (2) 2.3 - 3.1 (3.5) ; N = 16
Me = 10.3 × 3.8 µm ; Qe = 2.7
So does this fit H. vernus or might this be something else? I've found Cudoniella clavus before in the same stream last summer but I think this is something different. That finding had croziers and the stems were brown towards the base.
Hans-Otto Baral,
22-05-2020 20:37
Re : Hymenoscyphus vernus?
Yes, this is a good fit. A dark base is typical for H. vernus, not sure if it occurs also in C. clavus. Genetically the two species are surely congeneric, but the absence of croziers and the narrower, more cylindrical spores are typical of H. vernus.
Juuso Äikäs,
22-05-2020 20:50
Re : Hymenoscyphus vernus?
Ok, many thanks! I looked at a couple ascocarps with 20X magnification and the base of the stem was blackish. The C. clavus that I've found had more a medium brown than a blackish base.
Hans-Otto Baral,
22-05-2020 21:16
Re : Hymenoscyphus vernus?
This is exactly the current case.