20 



Index 



Sherardia 99 



Sibthorpia 96 



Sieglingia 18 



Silaus 79 



Silene 44 



Silenoideae, subfamily 44 



Siliquosae notorhizae, tribe 51 



Siliquosae orthoplocae, tribe 51 



Siliquosae pleurorhizae, tribe 50 



Silybum 108 



Simethis 25 



Simplices (Bower) 4 



Sison 78 



Sisymbrieae (Siliquosae notorhizae), 



tribe 5 1 

 Sisymbrium 5 1 

 Sisyrinchieae, tribe 29 

 Sisyrinchium 29 

 Slum 78 



Smyrnieae, tribe 77 

 Smyrnium 77 

 Solanaceae, family 94 

 Solaneae, tribe 94 

 Solanineae, suborder 94 

 Solanum 95 

 Solidago 104 

 Sonchus 109 

 Sparganiaceae, family 11 

 Sparganium 1 1 

 Spartina 20 

 Spathiflorae, order 22 

 Specularia 103 

 Spergula 43 

 Spergularia 43 

 Sperguleae, tribe 43 

 Spiraea 57 

 Spiraeeae, tribe 57 

 Spiraeoideae, subfamily 57 

 Spiranthes 32 

 Spiranthinae, subtribe 32 

 Spirodela 23 

 Spirolobeae (Chenopodiaceae), 



family 41 

 Stachydoideae, subfamily 92 

 Stachyeae, tribe 92 

 Stachys 93 

 Staphylea 6^ 

 Staphyleaceae, family d^ 

 Statice 85 

 Staticeae, tribe 85 

 Stellaria" 43 

 Stratioteae, tribe 14 



Stratiotes 14 



Stratiotoideae, subfamily 14 



Suaeda 41 



Suaedeae, tribe 41 



Subularia 52 



Subularieae (Latiseptae dipleco- 



lobae), tribe 52 

 Swertieae, tribe 87 

 Sympetalae, subclass 80 

 Symphoricarpus 100 

 Symphytum 90 

 Syringa 86 

 Syringeae, tribe 86 



Tamaricaceae, family 70 

 Tamariceae, tribe 70 

 Tamaricineae, suborder 70 

 Tamarix 70 

 Tamus 28 

 Tanacetum 106 

 Taraxacum 109 

 Taxaceae, family 9 

 Taxeae, tribe 9 

 Taxoideae, subfamily 9 

 Taxus 9 

 Teesdalia 53 

 Tetrasepaleae, tribe 46 

 Teucrium 92 

 Thalictrum 47 

 Theineae, suborder 69 

 Thesieae, tribe 38 

 Thesium 38 



Thlaspeae (Angustiseptae pleuro- 

 rhizae), tribe 52 

 Thlaspi 52 



Thymelaeaceae, family 72 

 Thymelaeineae, suborder 71 

 Thymelaeoideae, subfamily 72 

 Thymus 94 

 Tilia 68 



Tiliaceae, family 68 

 Tillaea 55 

 Tofieldia 25 

 Tofieldieae, tribe 25 

 Tordyliinae, subtribe 79 

 Tordylium 79 

 Torilis 77 

 Tragopogon 109 

 Trichomanes 5 

 Tricoccae, suborder 63 

 Trientalis 84 

 Trifolieae, tribe 60 



