Rhododendron maddenii Hook.f. [ Rhododendron calophyllum Nutt.]
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Rhododendron maddeniiHook.f. [Rhododendron calophyllum Nutt.] [Ericaceae]
L.B. Van Houtte, Fl. Serres, vol. 22 (Annales Générales d’Horticulture): (1845)