Boltonia decurrens is a rare species of flowering plant in the aster family known by the common names
decurrent false aster and
claspingleaf doll's daisy. It is native to the floodplains along the Illinois and Mississippi Rivers in the United States, where the habitat has been drastically altered, leading to its decline. The plant was once distributed across 400 kilometers of riverside forest from LaSalle, Illinois, to St. Louis, Missouri. As the rivers and riparian ha
(Wikipedia)