Still trying to learn to love the Sphagnum. This one comes from the Isle of Mull and it has some signature features that ought to make it readily identifiable in the field ... maybe.
First up it's a bit dingy lookg - at least this one is. It isn't always, apparently. But the capitulum also has a tendency to a green centre with more red pigments around the outside. Like so:
Next it has a reddish stem, almost triangular upright stem leaves (but slightly more "square" proximally), and typically two branching stems and one trailing. Like so:
Seems like that's enough to be going on with. I kind of fell, sort of, that I would know it again if I were to come face to face with it. Though I probably will have forgotten its name by then!