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Non-native Plant
Rosa centifolia
Non-native Plant
Rorippa cantoniensis
Non-native Plant
Rosa ×borboniana
Non-native Plant
Rorippa austriaca
Non-native Plant
Rorippa amphibia
Non-native Plant
Rosa ×alba
Non-native Plant
Richardia humistrata
Non-native Plant
Rheum rhabarbarum
Non-native Plant
Reichardia picroides
Non-native Plant
Reseda luteola
Non-native Plant
Reseda lutea
Non-native Plant
Ranunculus sardous
Non-native Plant
Ranunculus repens
Non-native Plant
Ranunculus plebeius
Non-native Plant
Rapistrum perenne
