| Substance | Abbreviation | Systematics | Provings |
| Radiatio Computer Computer Emanation |
Comp-rad | Radiatio artifcialis |
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| Radiatio TV TV emenation |
TV-rad | Radiatio artifcialis |
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| Radium bromatum Bromide of Radium |
Rad-br | Radium |
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| Radium metallicum Radium |
Rad | Radium |
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| Rajania subsamarata |
Raja-s | Dioscoreaceae |
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| Ramonda myconi Pyrenean violet |
Ramo-m | Gesneriaceae |
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| Rana catesbeiana Bullfrog |
Rana-c | Ranidae |
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| Ranunculus acris Goldcup |
Ran-a | Ranunculaceae |
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| Ranunculus bulbosus Bulbous Buttercup |
Ran-b | Ranunculaceae |
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