- Sagebrush
- Sand blossoms
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Picture 5
- Picture 6
- Sand cress
- Sand verbena
- Picture 1
- Picture 2
- Picture 3 (with evening primrose)
- Picture 4
- Picture 5
- Picture 6
- Sandpaper plant
- Picture 1
- Picture 2
- Picture 3
- Sandwort
- Saucer plant
- Picture 1
- Picture 2
- Scale-leaved sandplant
- Picture 1
- Picture 2
- Screwbean mesquite
- Picture 1
- Picture 2
- Sego lily
- Picture 1
- Picture 2
- Picture 3
- Senecio
- Picture 1
- Picture 2
- Showy white milkvetch
- Picture 1
- Picture 2
- Silk dalea
- Picture 1
- Picture 2
- Picture 3
- Silver cholla
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Picture 5
- Picture 6
- Picture 7
- Picture 8
- Picture 9
|
- Silver puffs
- Skeleton weed
- Small-flowered poppy
- Picture 1
- Picture 2
- Smoke tree
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Picture 5
- Soap plant
- Spanish needle
- Spectacle pod
- Picture 1
- Picture 2
- Picture 3
- Picture 4
- Picture 5
- Picture 6
- Picture 7
- Spider lupine
- Picture 1
- Picture 2
- Picture 3
- Splendid gilia
- Squaw bush
- Stephanomeria
- Picture 1
- Picture 2
- Picture 3
- Sweetbush
- Picture 1
- Picture 2
- Picture 3
- Syntrichopappus
- Picture 1
- Picture 2
- Picture 3
- Picture 4
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