Great Rhododendron (Rhododendron maximum) also known as: Rosebay Rhododendron, Big Rhododendron, American Rhododendron, Great Laurel and simply Rhododendron Division - Magnoliaphyta Class - Magnoliopsida Subclass - Dilleniidae Order - Ericales Family - Ericaceae Genus - Rhododendron Weeds Taxonomic List List by Scientific Name Text Only List by Scientific Name