Saxifraga tridactylites
Rue-leaved Saxifrage
Scabiosa columbaria
Small Scabious
Schaueria calytricha
Golden Plume
Schedonorus giganteus
Giant Fescue
Scheuchzeria palustris
Rannoch-rush
Schismatoglottis calyptrata
Dukaruk
Scindapsus pictus
Satin Pothos
Scleroderma aerolatum
Leopard Earthball
Scrophularia umbrosa
Green Figwort
Scutellaria galericulata
Skullcap
Scutellaria incarnata
Hoary Skullcap
Sedum album
White Stonecrop
Seemannia sylvatica
Bolivian Sunset Gloxinia
Selaginella martensii
Variegated Spikemoss
Selaginella willdenowii
Willdenow's Spikemoss
Selenicereus undatus
Pitahaya
Senecio sarracenicus
Broad-leaved Ragwort
Senecio vernalis
Eastern Groundsel
Senega paniculata
Root Beer Plant
Senna alata
Emperor's Candlesticks
Senna fistula
Golden Shower Tree
Senna obtusifolia
Sicklepod
Sequoiadendron giganteum
Wellingtonia
Seseli libanotis
Moon Carrot