Scrophularia peyronii 
Scrophularia xanthoglossa 
Scrophularia xylorrhiza 
Scutellaria albida 
Scutellaria brevibracteata 
Scutellaria indica 
Scutellaria tomentosa 
Scutellaria utriculata 
Sea Holly 
Sea Plantain 
Seep monkeyflower 
Sesame 
Sesamum angustifolium 
Sharpwing Monkeyflower 
Shoreline figwort 
Shrimp Plant 
Siala 
Sibirian veronicastrum 
Sibthorpia peregrina 
Sicilian Snapdragon 
Sideritis cossoniana 
Sideritis lanata 
Sideritis libanotica 
Sideritis perfoliata