Rhododendron calendulaceum (Michx.) Torrey [ Azalea calendulacea Michx.]
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Rhododendron calendulaceum (Michx.) Torrey
[Azalea calendulacea Michx.] [Ericaceae]
S.T. Edwards, Bot. Reg., vol. 2 : t. 145 (1816) [S. Edwards]