I just am not sharp enough on individual species to declare a species name. But hopefully someone else will be able to comment.
On the subject of plants that grow on rocks, I ran across another term today in some of the works of Dr. Tom Croat of the Missouri Botanical Garden. In describing a specimen known as Philodendron rugosum, sometimes called the Pigskin Philodendron or Naugahyde Philodendron, Dr. Croat referred to the species as sometimes being Epipetric. If you look that one up, you'll find it also means a plant capable of growing on rocks.
I just wish I could learn for certain which word is appropriate in which context! I've got a note ready to send to Dr. Croat but he will be in Ecuador for 2 more weeks.
Here in Cuernavaca Mexico you can see that plant growing in almost all trees in gardens, it is called in Spanish "Clavel del Aire" (Air carnation) I have always knew it as Tillandsia aeranthos, it grows in full sun or mid sun, it blooms here in Octuber