A friend of mine has this plant in a pot that was sold to him as a "fern", but it doesnt seem to fit the definition of a fern. It looks like a small cabbage, but has quite thick, veiny almost feathery "leaves". It seems to be producing odd aerial roots from the undersides of the fronds.
Link to a (not very clear)photo:
http://i35.photobucket.com/albums/d152/ISO1/RIMG0008.jpg
You sometimes see Selaginella (usually S. kraossiana) used in Japanese gardens on rocks and other stone features. It forms soft drifts and looks smashing.
