I'm curious if anybody has any information on epiphytic fern species that occur in North Carolina.

I have lived in central NC for most of my life, and I am familiar with many different native fern species. However, today I came across an unfamiliar species of fern which appears to grow epiphytically. I have seen several species of native terrestrial ferns which sometimes grow epiphytically near the base of moss covered trees before, but the species I encountered today was growing about 10-15 feet up on a tree, without the apparent protection of moss.

Any ideas of what I might have seen? I noticed the plant in the Raleigh NC area, in case that might help. I do not have any photos, though if necessary, I may be able to obtain some.

Thanks in advance for your help.