  Stipa gigantea | 
  Stipa gigantea | 
  Stipa juncea | 
  Stipa pennata | 
  Stipa pennata | 
  Stipa pennata | 
  Stipa pennats | 
  Stokesia laevis | 
  Stokesia laevis | 
  Stokesia laevis | 
  Stranvaesia davidiana | 
  Stranvaesia davidiana | 
  Stranvaesia davidiana | 
  Stranvaesia davidiana | 
  Stratiotes aloides | 
  Stratiotes aloides | 
  Stratiotes aloides | 
  Stratiotes generalis | 
  Streblonema fasciculatum | 
  Streblonema reptans | 
  Streblonema sphaericum | 
  Streblonema stilophorae | 
  Strelitzia reginae | 
  Strelitzia reginae | 
  Streptocarpus polyanthus | 
  Streptocarpus rexii | 
  Streptococcus mesenterioides | 
  Streptococcus pyogenes | 
  Streptococcus pyogenes | 
  Streptococcus pyogenes | 
  Streptopus amplexifolius | 
  Streptopus amplexifolius | 
  Striaria attenuata | 
  Striaria attenuata | 
  Strobilanthes dyerianus | 
  Strobilanthes dyerianus | 
  Strophanthus hispidus | 
  Strophanthus hispidus | 
  Strophanthus petersianus | 
  Strophanthus preussi | 
  Struthanthus rhynchophyllus | 
  Struthanthus sp. | 
  Struthiopteris germanica | 
  Struthiopteris germanica | 
  Struvea plumosa | 
  Struvea plumosa | 
  Strychnos colubrina | 
  Strychnos ignatii | 
  Strychnos nux-vomica | 
  Strychnos nux-vomica | 
  Strychnos nux-vomica | 
  Stryphnodendron barbatimao | 
  Stuartia monadelpha | 
  Stuartia monadelpha | 
  Sturmia loeselii | 
  Stylidium graminifolium | 
  Stylopodium | 
  Stylosanthes capitata | 
  Stylostegium caespiticeum | 
  Stypocaulon |