Strings of fern ?

Shoestring fern (Vittaria lineata) is another epiphyte that grows at the Oslo Riverfront Conservation Area. This primitive fern with stringy foliage is found almost exclusively growing in association with “boots” — old leafstems — of cabbage palms (Sabal palmetto) in moist places.

This fern is listed as threatened by the state of Florida and does NOT transplant. Like all ferns, shoestring fern reproduces by spores …

… growing longer with time …

… and longer …