Rhododendron occidentale (Torrey & A. Gray) A. Gray [ Azalea occidentalis Torrey & A. Gray]
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Rhododendron occidentale (Torrey & A. Gray) A. Gray
[Azalea occidentalis Torrey & A. Gray] [Ericaceae]
W. Curtis, Bot. Mag., vol. 83 [ser. 3, vol. 13]: t. 5005 (1857) [W.H. Fitch]