Calamagrostis canadensis is a species of grass, having three or more varieties, in the Poaceae family. It is known variously by the common names of bluejoint, bluejoint reedgrass, marsh reedgrass, Canadian reedgrass, meadow pinegrass, and marsh pinegrass. The varieties often overlap in where they are distributed. In the U. S. . Most states in the U. S. have one or more varieties of C. canadensis, the most common by distribution being C. c. var. canadensis. It is a perennial grass with a branching stem reaching heights between 60 centimeters and 1. 5 meters. The flat, drooping leaves are rough with tiny hairs.