In the parts of Washington where there is heavy tree cover and plenty of rain, you can get some serious growth of moss on the branches of the trees.  Go to the rainforest out on the Olympic peninsula and there are plenty of examples of this but even in the hills around Snoqualmie, you can see such trees.  The softer light during the winter helps show up the moss well with it almost appearing to glow in the shaded areas.

I saw one tree across the river from us and in direct light and it really stood out from the surrounding trees so I figured a shot had to be taken.  On our side of the river there was plenty of moss too so here you have a single tree and then some close ups of other trees to show just how the moss dominates the trees.  Of course, it isn’t very dense so doesn’t overwhelm the tree but it really makes the structure seem much beefier!