Old man's beard

Old man's beard may refer to the following:


 * Chionanthus virginicus, a tree, which is used like a medicinal plant and ornamental plant.
 * Clematis aristata, an Australian climbing plant.
 * Clematis vitalba, a climbing plant.
 * Tillandsia usneoides, "Spanish moss" - a bromeliad.
 * Usnea, a genus of lichen.