R. hypoleucum
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subgenus Rhododendron section Rhododendron subsection Ledum
Rhododendron groenlandicum Rhododendron hypoleucum Rhododendron neoglandulosum Rhododendron tolmachevii Rhododendron tomentosum ssp. subarticum Rhododendron tomentosum ssp. tomentosum SEE THE WHOLE 1998 CLASSIFICATION
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