Phryma leptostachya, or lopseed, is a perennial herb. The genus is native to eastern North America (roughly, everywhere east of the Rocky Mountains) and Asia (Japan, Nepal, India and West Pakistan), and consists of either one or two species, depending on whether the American and Asian species are considered separate or not. The plant stands about 0.3 to 1.0 meters tall, and the inflorescences bear a number of small (4 mm) tube-shaped white to pink flowers.