Piptatherum is a genus of plants in the grass faimly known as ricegrass.They are widely distributed across much of Eurasia, North Africa, and North America. These are clumping perennial grasses with long, tapering leaf blades.Speciesformerly includedsee Achnatherum Arundinella Eriochloa Nassella Oryzopsis Piptatheropsis Piptochaetium Stipa