Rhododendron indicum - Photograph of single flower. Rhododendron ponticum - Information on this invasive species and two photographs. Rhododendron macrophyllum - Account of the species, including distribution and occurrence, use and characteristics. Rhododendron maximum - An account of the species, including distribution and occurrence, use and characteristics. Rhododendron cubitii - Collection information for this species at Connecticut University. Virtual Arboretum: Rhododendrons, Azaleas and Vireyas - Collection of photographs and information about rhododendron species and hybrids. Invites viewers to send in photos. Rhododendron calendulaceum: Flame Azalea - Fact sheet with photos of the leaf, flower, fruit, twig, bark and form. Rhododendron canescens: Swamp Azalea - Fact sheet with photos of the leaf, flower, fruit, twig, bark and form. Rhododendron catawbiense: Catawba Rhododendron - Fact sheet with photos of the leaf, flower, fruit, twig, bark and form. Rhododendron macrophyllum: Pacific Rhododendron - Fact sheet with photos of the leaf, flower, fruit, twig, bark and form. Rhododendron maximum: Great Rhododendron - Fact sheet with photos of the leaf, flower, fruit, twig, bark and form. Rhododendron occidentale: Western Azalea - Fact sheet with photos of the leaf, flower, fruit, twig, bark and form. Rhododendron periclymenoides: Pink Azalea - Fact sheet with photos of the leaf, flower, fruit, twig, bark and form.