I came across this moss on a bank near my local river. wan’s-neck thyme-moss is one of Britain’s most common mosses. It is a dark, dull green, with large ‘leaves’ that are almost fern like and velvety. In spring the new, almost yellow leaves contrast with the older, dark-green leaves.
Found in damp woodland conditions, typically, this is in oak-birch woodlands, but also beech or pine woods. It is abundant on the ground, but also grows on logs, rocks, tree bases and along stream banks.