Poa palustris, also known as bog bluegrass, is a perennial grass species that grows in wetland habitats. There are many different synonyms for this plant, including Poa fluitans, Poa flexuosa, and Poa amethystina. Each of these names is used to describe a slightly different variation of the same species. Bog bluegrass is an important component of wetland ecosystems, providing food and habitat for a variety of wildlife. Its strong roots help to stabilize wetland soils and prevent erosion. Whether you call it Poa palustris, Poa fluitans, or another name, this grass is a vital part of wetland environments around the world.