Shortleaf Blazing Star          

Shortleaf Pine      

Shortleaf Rose Gentian          

Shortleaf Skeletongrass          

Shortleaf Sneezeweed          

Shortleaf Spikesedge          

Shortleaf Yelloweyed Grass          

Shortpod Draba          

Shortspike Bluestem          

Shortstalk Chickweed          

Shortstalk False Bindweed          

Showy Buttercup          

Showy Fly Honeysuckle          

Showy Gentian          

Showy Goldenrod          

Showy Milkwort          

Showy Orchid          

Showy Rattlebox      

Showy Skullcap          

Shrub Lespedeza          

Shrubby Lespedeza          

Shrubby Primrose-willow          

Shrubby St. Johnswort      

Shumard Oak          

Sickle Tickseed          

Sicklepod          

Sidebeak Pencilflower          

Sideoats Grama      

Sieva Bean          

Signalgrass          

Silkgrass          

Silktree      

Silky Camellia          

Silky Dogwood      

Silky Willow      

Silkyscale          

Silver Beardgrass          

Silver False Spleenwort          

Silver Hairgrass          

Silver Maple      

Silver Plumegrass          

Silverbell          

Silvergrass          

Silverleaf Hydrangea