This is how I grow all of my epiphytic ferns, Microgramma, Davallia, Elaphoglossum, Pyrrosia, Lemmaphyllum, Microsorum, etc:
I use a 10 gallon viv, full glass top with 2 X 3/4" ventilation holes. The 10gallon has a 1 inch layer of gravel and a layer of sphagnum. I then take a small piece of cork, cover the surface with clean orchid sphagnum moss. Take fishing line or thread and wrap around moss to hold it in place. Keep a length of fishing line. Place the fern with the fronds facing the proper direction ontop of the sphagnum moss. Wrap the fishing line around a few sections of the rhizome to hold into place. Lay the cork piece either flat in the 10 gallon or angle it (45degrees) against the side of the tank. I use 1 - 20watt 6500K CFL bulb from lowes. I have rooted and received new growth from ALL epiphytic ferns I have worked with doing this. Temps range up to 80 during summer and down to 66 at nights.
Ed Parker
I will post a picture of the process later
So far, the M. vaccinifolia from Jason is doing great with this method