What is the purpose of bristles on sedge flowers?

In the family Cyperaceae, the perianth—which is often absent—is represented by up to six hairlike or stiff bristles. These structures serve specific functions related to the dispersal of the plant's achenes (nutlets):

• Animal dispersal: When the bristles are barbed, they can cling to the fur of animals, allowing the nutlets to be transported to new locations.
• Wind dispersal: In genera such as Eriophorum, Scirpus, and Trichophorum, the bristles are long and silky, acting as parachutes that facilitate dispersal by the wind.1