1. Deciduous bushy Eurasian shrub with golden yellow flowers and reddish-purple fruits from which a soothing salve is made in Spain
   - common St John's wort, tutsan

Type of: St John's wort

• genus Saurosuchus
• genus Saururus
• genus Saussurea
• genus Saxegothea
• genus Saxicola
• genus Saxifraga
• genus Sayornis
• genus Scabiosa
• genus Scaphiopus
• genus Scaphosepalum
• genus Scarabaeus
• genus Scardinius
• genus Scartella
• genus Sceliphron
• genus Sceloglaux
• genus Sceloporus
• genus Schaffneria
• genus Schefflera
• genus Schinus
• genus Schistosoma
• genus Schizachyrium
• genus Schizaea
• genus Schizanthus
• genus Schizopetalon
• genus Schizophragma