Specklinea caulophryne 
Specklinia picta 
Sphinx Ladies Tresses 
Sphyrastelis ecuadorensis 
Spiny-head mat-rush 
Splendid spider orchid 
Spotted Brassia 
spotted coralroot 
Spotted onion 
Spotted Sun Orchid 
Sprenger's Asparagus 
Sprenger's Asparagus 
Spring Crocus 
Spring Ladies' Tresses 
Spring snowflake 
Spring squill 
Spring Starflower 
Squill 
St Bernards lily 
St Bruno's Lily 
Stanhopea jenischiana 
Star of Persia 
Starch grape hyacinth 
Stelis argentata