Osmunda looks like balls of black/brown wirey roots, easily attached to limbs
boards etc. I use it for bromeliads, but haven't had any epi. utrics. to
try it on. It should work great for any species which need very open, fast
drying medium. Its open enough you can even work strands of long fiber sphag.
into it to hold moisture a little longer.
Jeff
P.S. we'll see whose laughing is August ;-)!