Radiation Lantana
Rainbow Warrior Purple Flax
Ray Hartman Ceanothus
Red Apple Aptenia
Red Barrenwort
Red Buckwheat, San Miguel Island Bu
Red Damask Tea Tree
Red Flowering Currant
Red Fountain Grass
Red Hot Poker
Red Iron Bark Gum
Red Monkey Flower
Red New Zealand Flax
Red Pencil Tree
Red Star Autumn Sage
Red Yucca
Ribbon Gum
Rincon Strawberry Guava
River She-Oak
Rock Purslane