Pyrossia lingua
Tongue Fern
Pyrrosia lanceolata
Lanceleaf Tongue Fern
Pyrrosia piloselloides
Dragon Scale Fern
Radermachera yunnanensis
Raphanus raphanistrum
Wild Radish
Ravenala madagascariensis
East-West Palm
Rhizophora mangle
Red Mangrove
Ricinus communis
Castor-oil-plant
Rivini humilis
Bloodberry
Rubus fraxinifolius
Mountain Raspberry
Ruella simplex
Mexican Petunia
Ruellia simplex
Mexican Petunia
Ruellia tuberosa
Minnieroot
Russelia equisetiformis
Firecracker Plant
Salvia farinacea
Mealy Sage
Salvia hispanica
Golden Chia
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
Saraca indica
Asoka Tree
Schaueria calytricha
Golden Plume
Schismatoglottis calyptrata
Dukaruk
Scindapsus pictus
Satin Pothos
Scutellaria incarnata
Hoary Skullcap
Scyphiphora hydrophylacea
Nilad
Seemannia sylvatica
Bolivian Sunset Gloxinia
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
Sesuvium portulacastrum
Sea Purslane
Setaria palmifolia
Palm Grass
Setaria verticillata
Hooked Bristlegrass
Sicyos edulis
Chayote
Sida acuta
Common Wireweed
Sida rhombifolia
Arrowleaf Sida
Solandra grandiflora
Showy Chalicevine
Solanum aethiopicum
Ethiopian Eggplant
Solanum americanum
American Black Nightshade
Solanum erianthum
Velvet Nightshade
Solanum melongena
Eggplant
Solanum torvum
Pendejera
Sonchus asper
Prickly Sow-thistle
Sonneratia caseolaris
Mangrove Apple
Spathiphyllum blandum
Pleasant Peace Lily
Spathodea campanulata
African Tulip Tree
Spathoglottis plicata
Philippine Ground Orchid
Spermacoce exilis
False Buttonweed
Spermacoce hispida
Shaggy Buttonweed
Spermacoce remota
Sphagneticola trilobata
Bay Biscayne Creeping-oxeye
Spigelia anthelmia
West Indian Pinkroot
Stachytarpheta cayennensis
Blue Snakeweed
Streptocarpus saxorum
False African Violet
Strobilanthes alternata
Red-ivy
Strobilanthes reptans
Waffle Plant
Stromanthe thalia
Stylosanthes guianensis
Stylo
Swietenia macrophylla
Mahogany
Swietenia macrphylla
Honduran Mahogany
Synedrella nodiflora
Nodeweed
Syngonium auritum
Arrowhead Vine
Syzygium samarangense
Wax Apple