San Francisco Bay Area Plant Encyclopedia
- Rudbeckia californica
- Rudbeckia “Cherokee Sunset”
- Rudbeckia “Indian Summer”
- Rudbeckia “Prairie Sun”
- Ruellia “Katie Purple”
- Ruellia makoyana
- Rumohra adiantiformis
- Rumohra adiantiformis “Iberia”
- Ruschia karrooica
- Ruschia pulvinaris
- Ruschia uncinata
- Russelia equisetiformis
- Russelia “Flamingo Park”
- Russelia X “St. Elmo’s Fire”
- Sabal riverside
- Salvia “Allen Chickering”
- Salvia “Amethyst Bluff”
- Salvia “Amistad”
- Salvia apiana
- Salvia argentea
- Salvia “Bee’s Bliss”
- Salvia “Belize Huntington”
- Salvia “Berzerkeley”
- Salvia “Black and Blue”
- Salvia “Bodacious Rhythm + Blues”
- Salvia “Bodacious Smokey Jazz”
- Salvia “Bright Eyes”
- Salvia “Calamity Jane”
- Salvia “Cerro Potosi”
- Salvia chamaedryoides