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rutabaga,
Rietboc,
roadbook,
rudbeckia,
Roodebok,
ratbag,
redbook,
radiopaque,
RDPC,
Genus Rudbeckia,
radiopaque dye,
Redback Vole,
redbug,
Rudbeckia Hirta,
Rudbeckia Laciniata,
Rudbeckia Laciniata Hortensia,
Rudbeckia Serotina,
rutabaga plant.