Polytrichum formosum
The following picture shows the species "Polytrichum formosum",
which is common on the whole northern hemisphere. Here in central Europe it
is one of the most widespread mosses on slightly acid soils in woods. I took
the picture in the "Siebengebirge" (Seven Mountains), a small group of
mountains near Bonn (Germany). The typical capsules of the
polytrichum-species with 4-6 sharp edges are easy to see.
Some more
informations on the genus Polytrichum (only in german) can be found on
my homepage.