- rhododendron - any shrub of the genus Rhododendron: evergreen shrubs or small shrubby trees having leathery leaves and showy clusters of campanulate (bell-shaped) flowers
--1 is a kind of shrub, bush
--1 is a member of genus Rhododendron
--1 has particulars:coast rhododendron, Rhododendron californicum; rosebay, Rhododendron maxima; swamp azalea, swamp honeysuckle, white honeysuckle, Rhododendron viscosum; azalea