Red Emu Bush
Red Eremophila
Red Flax
Red Gum, Red River Gum
Red Hot Poker
Red Jacobinia
Red Justicia
Red Oak, Northern Red Oak
Red Queen's Wreath
Red Spike Iceplant
Red Yucca
River She-Oak
Rock Pea
Rock Penstemon
Rock Slide Dicliptera
Rocky Mountain Penstemon
Rocky Point Ice Plant
Rose Of Sharon, Shrub Althaea
Rosemary
Rosemary Collingwood Ingram