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12-04-2026 17:56

Hardware Tony Hardware Tony

Found on dead stems in February earlier this year

17-04-2026 19:16

Enrique Rubio Enrique Rubio

Hi to everybodyI would appreciate any assistance r

14-04-2026 05:32

Ethan Crenson

Hi all, A few weeks back a friend pointed out som

17-04-2026 15:14

Bruno Coué Bruno Coué

Bonjour.Récoltes du 16/04/2026, sur feuilles mort

12-04-2026 15:52

Gernot Friebes

Hi,I'm looking for help with this anamorph collect

14-04-2026 21:52

Gernot Friebes

Hi,found on dead leaves of Carex elata. Conidia: 4

16-04-2026 22:09

Buckwheat Pete

Hello, I'd like to ask about this older specimen:

15-04-2026 19:33

Fátima Durán Manzaneque

Hi!! I need help, I found this Ascomycete but I d

14-04-2026 20:31

Gernot Friebes

Hi,can this be Psilachnum lateritioalbum on Phragm

12-04-2026 12:22

William Slosse William Slosse

In a dune grassland in Oostduinkerke (Belgium), on

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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.