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- Croton radlkoferi
- Croton ramboi
- Croton ramillatus
- Croton redolens
- Croton reflexifolius
- Croton refractus
- Croton regnellianus
- Croton reitzii
- Croton repens
- Croton rhamnifolius
- Croton rhexiifolius
- Croton riedelianus
- Croton rimbachii
- Croton rivinaefolius
- Croton rivularis
- Croton roxanae
- Croton roxburghii
- Croton rudolphianus
- Croton rugineus
- Croton ruizianus
- Croton russulus
Read more about this topic: List Of Croton Species