Rubus fraxinifolius
Mountain Raspberry
Ruella simplex
Mexican Petunia
Ruellia simplex
Mexican Petunia
Ruellia tuberosa
Minnieroot
Salvia involucrata
Rosy-leaf sage
Salvia leucanthe
Mexican Bush Sage
Salvia splendens
Bonfire Salvia
Samanea saman
Raintree
Sambucus canadensis
American Elderberry
Sanchezia oblonga
Zebra Plant
Sandoricum koetjape
Santol
Schaueria calytricha
Golden Plume
Schismatoglottis calyptrata
Dukaruk
Seemannia sylvatica
Bolivian Sunset
Selaginella martensii
Variegated Spikemoss
Selaginella willdenowii
Willdenow's Spikemoss
Selenicereus undatus
Pitahaya
Senega paniculata
Root Beer Plant
Senna alata
Emperor's Candlesticks
Senna fistula
Golden Shower Tree
Senna obtusifolia
Sicklepod
Setaria verticillata
Hooked Bristlegrass
Sicyos edulis
Chayote
Sida acuta
Common Wireweed