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05-06-2020 06:41

Jérôme MAFFERT

Bonjour, il semble bien que Tuber aestivum Vitt. s

06-06-2020 23:06

Garcia Susana

Hola, Estos apotecios crecian sobre un tallo de

04-06-2020 18:28

Malcolm  Greaves Malcolm Greaves

HelloCan someone help with this long necked flask

05-06-2020 13:53

Peter Thompson

Hello Everyone,I would be interested in your opini

06-06-2020 17:17

Robin Pétermann

J'ai également trouvé ce Lachnum sur Filipendula

06-06-2020 20:25

Juuso Äikäs

I know next to nothing about these kinds of fungi

06-06-2020 19:03

Robin Isaksson Robin Isaksson

Found this mycogaena on populus on smooth twigs in

06-06-2020 16:48

Robin Pétermann

Bonjour,j'ai trouvé ceci sur tige morte de Filipe

06-06-2020 07:19

Juuso Äikäs

These were growing on a dead, fallen stem of Filip

05-06-2020 19:29

Mirek Gryc

Hi! I am convinced that I have already seen these

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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.