Cyperales is an order comprising monocot flowering plants of a single family, the Cyperaceae, known as sedges. The Poaceae (grasses) have also been placed here, but are now more often placed in a separate order, correspondingly called the Poales. Sometimes the order Cyperales is merged into the Juncales.
The recent classification (APG II, 2003) places both Cyperaceae and Juncaceae into Poales, thus effectively obsoleting Cyperales.