In the entrance of a old rabbit burrow in a very shaded area just above a stream.It was very delicate,flat fronds only 1.5cm,leaves in two flat rows
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Looks more like a Fissidens to me too.
I have never seen this before but thought it was rather unusual.Is it a common plant or is it just so small that it is unnoticed by us.
Have you seen Fissidens moss before, some of them are quite common in woodland especially but do look a bit strange at first glance like a very tiny Yew tree branch rather than the more usual mosses.
They are also quite common anywhere soil is exposed such as on steep areas of grassland or banks on hedgerows or river banks. They has an interesting feature where part of the leaf appears folded over and is two cells thick. This is why they are known as pocket mosses. The key in the Field Guide is good: http://www.bbsfieldguide.org.uk/
Biodiversity Officer - Shropshire
Lat/Lng: 55.055, -2.2324
OS grid ref: NY852734