Sacahuista
Sack Saltbush
Sacramento Waxydogbane
Sacred Thorn-apple
Saddlebush
Safflower
Saffron Ragwort
Sage
Sagebrush
Sagebrush Buttercup
Sagebrush Cholla
Sagebrush False Dandelion
Sagebrush Violet
Sago Pondweed
Sainfoin
Saline Saltbush
Saline Wildrye
Salmon Wildrye
Salsify
Salt Heliotrope
Salt Sandspurry
Salt Sedge
Salt Spring Checkerbloom
Saltbush
Saltcedar
Saltgrass
Saltlover
Saltmarsh Alkaligrass
Saltmarsh Dodder
Saltmeadow Rush
Salty Buckwheat
Salty Loco Milkvetch
San Francisco Campion
San Juan Gilia
San Pedro Snakeweed
San Rafael Cryptantha
San Rafael Milkvetch
Sand Bluestem
Sand Buckwheat
Sand Dropseed
Sand Fleabane
Sand Fringepod
Sand Gilia
Sand Lupine