It's incredible how nature makes use of every possible substrate as
room for her children. Here is a small moss that grows on twigs (in
this case a from of the Soft Treefern). Check out the thallose
liverwort on the left too, behaving like living veins for an otherwise
dead fern pinnae.
The genus of this moss, I believe, is named after the eminent botanist Joseph Dalton Hooker.