you are definitely going to have to dry that out and then have it stabilized to get any use out of it, ferns aren't really wood. even though I have seen a lot of fossilized fern trunks over the years. It is pretty cool though
I must admit, that that photo is uber intriguing and beautiful, but the way it is structured I find it hard to imagine it in a product. I defer that to wood pros.
With that said, the first thing that came to mind is a big WHAM! or BAM! word over it. It looks like those cartoon things