A gray epiphyte that hangs down from trees, Tillandsia usneoides, native to the southeastern US and throughout humid tropical and subtropical parts of the Americas.
Used other than figuratively or idiomatically: see old, man, -'s, beard.
Tillandsia usneoides, a bromeliad; Spanish moss.
Clematis aristata, an Australian climbing plant.
Clematis vitalba, a climbing plant.
Chionanthus virginicus, a tree.
Usnea, a type of lichen.