Sabal
Saccharum
Sadleria
Sagina
Sagittaria
Saintpaulia
Salix (willow)
Salvia (sage)
Salvinia
Sambucus
Sanchezia
Sandersonia
Sanguinaria
Sanguisorba
Sansevieria
Santolina
Sanvitalia
Sapindus
Sapium (tallow tree)
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Saponaria (soapwort)
Sarcocapnos
Sarcocaulon
Sarcococca
Saritaea
Sarmienta
Sasa
Sassafras
Satureja (savory)
Sauromatum
Saxegothaea
Saxifraga
Scabiosa
Scadoxus
Scaevola
Schefflera
Schima
Schinus
Schisandra
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Schizachyrium
Schizanthus
Schizopetalon
Schizophragma
Schizostylis
Schlumbergera
Schoenoplectus
Schomburgkia
Schotia
Schwantesia
Sciadopitys
Scilla
Scindapsus
Scirpoides
Sclerocactus
Scopolia
Scrophularia
Scutellaria
Securinega
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Sedum
Selaginella
Selago
Selenicereus
Selinum
Semele
Semiaquilegia
Semiarundinaria
Sempervivum
Senecio
Senna
Sequoia
Sequoiadendron
Seriphidium
Serissa
Serruria
Sesbania
Sesleria
Setaria
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Shepherdia
Shibataea
Shortia
Sibiraea
Sidalcea
Sideritis
Silene
Silphium
Silybum
Simmondsia
Simplestem bur-reed
Sinningia
Sinocalycanthus
Sinofranchetia
Sinojackia
Sinowilsonia
Sisyrinchium
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