1. Arborescent South American shrub having very large orange-red flowers
   - red angel's trumpet, Datura sanguinea

Type of: bush, shrub

• genus Radyera
• genus Raffia
• genus Raja
• genus Ramalina
• genus Ramphomicron
• genus Rana
• genus Ranatra
• genus Rangifer
• genus Ranunculus
• genus Raoulia
• genus Raphanus
• genus Raphia
• genus Raphicerus
• genus Raphus
• genus Ratibida
• genus Rattus
• genus Rauvolfia
• genus Rauwolfia
• genus Ravenala
• genus Recurvirostra
• genus Regalecus
• genus Regnellidium
• genus Regulus
• genus Reithrodontomys
• genus Remilegia