• Rhododendron Linnaeus, 1753
• Rhododendron alabamense Rehd.
• Rhododendron albiflorum Hook.
• Rhododendron arborescens (Pursh) Torr.
• Rhododendron ashleyi Coker accepted as Rhododendron maximum Linnaeus
• Rhododendron atlanticum (Ashe) Rehd.
• Rhododendron austrinum (Small) Rehd.
• Rhododendron bakeri (Lemmon & McKay) Hume
• Rhododendron bakeri auct. non (Lemmon & McKay) Hume accepted as Rhododendron cumberlandense E.L. Braun
• Rhododendron calendulaceum (Michx.) Torr.
• Rhododendron californicum Hook. accepted as Rhododendron macrophyllum D. Don ex G. Don
• Rhododendron camtschaticum Pallas
• Rhododendron canadense (L.) Torr.
• Rhododendron candidum (Small) Rehd. accepted as Rhododendron canescens (Michx.) Sweet
• Rhododendron canescens (Michx.) Sweet
• Rhododendron carolinianum Rehd.
• Rhododendron catawbiense Michx.
• Rhododendron chapmanii Gray
• Rhododendron coryi Shinners accepted as Rhododendron viscosum (L.) Torr.
• Rhododendron cumberlandense E.L. Braun
• Rhododendron ferrugineum Linnaeus
• Rhododendron flammeum (Michx.) Sarg.
• Rhododendron groenlandicum (Oeder) Kron & Judd accepted as Ledum groenlandicum Oeder
• Rhododendron japonicum (Gray) Sur.
• Rhododendron lapponicum (L.) Wahlenb.
• Rhododendron macrophyllum D. Don ex G. Don
• Rhododendron maximum Linnaeus
• Rhododendron minus Michx.
• Rhododendron nudiflorum (L.) Torr. accepted as Rhododendron periclymenoides (Michx.) Shinners
• Rhododendron oblongifolium (Small) Millais
• Rhododendron occidentale (Torr. & Gray ex Torr.) Gray
• Rhododendron pennsylvanicum Rehd.
• Rhododendron periclymenoides (Michx.) Shinners
• Rhododendron prinophyllum (Small) Millais
• Rhododendron prunifolium (Small) Millais
• Rhododendron roseum (Loisel.) Rehd. accepted as Rhododendron prinophyllum (Small) Millais
• Rhododendron serrulatum (Small) Millais accepted as Rhododendron viscosum (L.) Torr.
• Rhododendron speciosum (Willd.) Sweet accepted as Rhododendron flammeum (Michx.) Sarg.
• Rhododendron vaseyi Gray
• Rhododendron viscosum (L.) Torr.
• Rhododendron wellesleyanum Waterer Ex Rehd.
• Rhododendron welleslyanum Waterer ex Rehd.