Very small and fragile. In wet ground below conifers, birch and willow
Caution: Do NOT use iSpot to identify fungi to eat!
Some fungi are very poisonous so a mistaken ID could have serious consequences.
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I've not see this Macrotyphula so not sure. I did see another species M. juncea the other week which was a total nightmare to photograph as it is tiny and very thin and never stays still, its always waving around in even the slightest breeze, in the end I did a bit of video which I might upload to show the movement even in calm conditions.
Your video might be a help on this one, it was very approximately 3cm. in height and my compact was struggling badly to focus on it!
here is that video
At least you can freeze it and grab a frame - it looks much more insubstantial than mine!
Yes I think they are completely different species, I am not at all sure what your one is.
Actually might they be Coprinus where the cap has completely dissolved into ink?
Lat/Lng: 51.8, -9.3
OS grid ref: SK0442