Cascade Azalea, White-flowered Azalea, White Rhododendron: Rhododendron albiflorum (Synonyms: Azaleastrum albiflorum, Rhododendron albiflorum var. warrenii) -
Coastal Labrador Tea, Mountain Labrador-tea, Smooth Labrador-tea, Western Labrador-tea, Western Labrador Tea: Rhododendron columbianum (Synonyms: Ledum columbianum, Ledum glandulosum, Ledum glandulosum ssp. australe, Ledum glandulosum ssp. columbianum, Ledum glandulosum ssp. olivaceum, Ledum glandulosum var. californicum, Ledum glandulosum var. columbianum, Ledum glandulosum var. glandulosum, Ledum xcolumbianum, Rhododendron neoglandulosum) -
Bog Labrador-tea, Labrador Tea, Rusty Labrador-tea: Rhododendron groenlandicum (Synonym: Ledum groenlandicum) -
California Rhododendron, Pacific Rhododendron, Western Rhododendron: Rhododendron macrophyllum (Synonym: Rhododendron californicum) -
False Azalea, Fool's Huckleberry, Rusty Menziesia: Rhododendron menziesii (Synonyms: Menziesia ferruginea, Menziesia ferruginea ssp. ferruginea, lMenziesia ferruginea ssp. glabella, Menziesia ferruginea var. ferruginea, Menziesia ferruginea var. glabella, Menziesia glabella) -
Western Azalea: Rhododendron occidentale (Synonyms: Rhododendron occidentale var. occidentale, Rhododendron occidentale var. paludosum) -