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16-05-2020 12:30

Hans Halbwachs

Dear all, I have found quite a few spores in Balti

18-12-2019 13:39

Peter Thompson

Hello Everyone,I have found what appears to be an

24-05-2020 22:36

Joop van der Lee

The reason why I post all these different characte

28-05-2020 11:45

Hardware Tony Hardware Tony

Found this hairless orange operculate fungi larges

28-05-2020 21:28

Marek Capoun

Hello everybody,I need help with a determination o

27-05-2020 00:13

Carbone Matteo

Dear all,my friend Emanuele Campo sent this pdf to

27-05-2020 17:31

Peter Thompson

Hello Everyone,I have found two leaves of Berberis

28-05-2020 16:23

Vasileios Kaounas Vasileios Kaounas

Found in leave of Quercus ilex. very small, less

28-05-2020 14:19

Vasileios Kaounas Vasileios Kaounas

Found 28-05-20, in forest with Quercus ilex and Pi

28-05-2020 10:46

Josep Torres Josep Torres

Hola. Aunque no es el Foro más adecuado para el t

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Hymenoscyphus vernus?
Juuso Äikäs, 22-05-2020 17:45
Yesterday I was searching for fungi from the bottom of a small forest stream. I stumbled upon these, growing from thin hardwood branches.

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.
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Hans-Otto Baral, 22-05-2020 20:37
Hans-Otto Baral
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
Hans-Otto Baral
Re : Hymenoscyphus vernus?
This is exactly the current case.