Cyperus papyrus
Some well-known sedges include the water chestnut ("Eleocharis dulcis") and the papyrus sedge ("Cyperus papyrus"), from which the writing material papyrus was made. This family also includes cotton-grass ("Eriophorum"), spike-rush ("Eleocharis"), sawgrass ("Cladium"), nutsedge or nutgrass ("Cyperus rotundus", a common lawn weed), and white star sedge ("Rhynchospora colorata").