Agrostis palustris, commonly known as Marsh Bentgrass, is a perennial grass species that is commonly found in wetlands, marshes, bogs, and other wet areas across North America. It belongs to the family Poaceae and has many synonyms, including Agrostis canina, Agrostis aquatica, and Agrostis nebulosa. Other common names for the species include Brown Bent, Fog Bent, and Redtop. Marsh Bentgrass is an important plant for wetland restoration and is widely used for erosion control and habitat restoration projects. It is also used for turfgrass and forage in some areas. The species is characterized by its slender stems, fine leaves, and delicate, feathery flowers.