Rhododendron canadense, the rhodora or Canada rosebay, is a deciduous flowering shrub that is native to northeastern North America.
Today's botanists consider the rhodora to be a distant relative of the other North American members of its genus, but the difference in floral structure did lead 19th century taxonomists to assign the plant its own genus Rhodora. Its closest relative is Rhododendron vaseyi from the Appalachian Mountains, which differs in having seven stamens. DNA sequencing shows that ...