Radish, Wild [Raphanus sativus]
Radish, Wild [Raphanus sativus x raphanistrum]
Ragweed, Annual [Ambrosia artemisiifolia]
Ragweed, Great [Ambrosia trifida]
Ragwort [Senecio jacobea]
Rape, Oilseed [Brassica napus]
Raphanus sativus [Wild Radish]
Raphanus sativus x raphanistrum [Wild Radish]
Raspberry, Red [Rubus idaeus]
Reedgrass, Chee [Calamagrostis epigeios]
Rhinanthus alectorolophus [European Yellowrattle]
Rhinanthus minor [Yellow Rattle]
Rhizophora mangle [American Mangrove]
Rice [Oryza sativa]