Spanish-Dagger 
Spiny-head mat-rush 
Sprenger's Asparagus 
Sprenger's Asparagus 
Spring squill 
Squill 
St Bernards lily 
St Bruno's Lily 
Starch grape hyacinth 
Tall white squill 
Tassel grape hyacinth 
Tequila agave 
Thompson's yucca 
Three-leaved False Solomon’s Seal 
Three-Leaved Hyacinth 
Torrey's Craglily 
Tuberose 
Twining Fringe-lily 
Wattle Mat-rush 
Wheeler Sotol 
Wild Asparagus 
Wombat berry 
Yucca gigantea