225 



PAGE 



Scbedonnardus 115 



SCHEUCHZERIACE^ Io8 



Schollera 126 



Schrankia 158 



Schrophularia 191 



SCHROPHUi,ARiACE.^ 191 



Scirpus 121 



Scouring-rusb 105 



Scutellaria 188 



Sedges 120 



Sedum 152 



Selaginella 105 



SELAGiNEiyL^CE.^ 105 



Selfheal 189 



Senaca Grass iii 



Senecio 211 



Senna Family 158 



Sensitive-brier 158 



Sensitive fern 103 



Senitive Pea 158 



Service Berry 157 



Setaria no 



Sheep Sorrel 136 



Shepherdia 174 



Shepherd's Purse 150 



Shin-leaf 180 



Shoe-string i6r 



Shooting Star i8r 



Sickle-pod 151 



Sicyos 197 



Silene 141 



Silphium 207 



Silver-berry 174 



Silver Maple 169 



Sinapsis 148 



Sisymbrium 148 



Sisyrinchium 130 



Sium 178 



Skullcap 188 



Skunk-bush 169 



Slippery Elm 134 



Smartweed 137 



Smilacace^ 129 



Smilacina 128 



Smilax 1 29 



Snakeroot 177 



Sneezewort 210 



PAGE 



Snowberry 196 



Soapwort 141 



Soft Maple 169 



SOLANACE^ 190 



Solanum 191 



Solidago 202 



Solomon's Seal 129 



Sonchus 198 



Sophia 150 



Sophora 158 



Sorbus 156 



Sow Thistle 198 



Sparc \NiACE^: 106 



Sparganium 106 



Spartina 1 15 



Spear-grass 117 



Specularia 197 



Speedwells 193 



Spergula 143 



SPERMOPHYTI-:-^ ij5 



Spiderwort 1 26 



vSpiesia 163 



Spikenard 128 



Spike-rushes 1 20 



Spiraea 154 



Spiranthes 131 



Spirocela 1 26 



Spleenwort 104 



Sporobolus 112 



Spruce 105 



Spurey 147 



Spurge Family 163 



Spurges 167 



Squaw Currant 153 



Squirrel-tail-grass 119 



Stachys 189 



Staff-tree Family 169 



Staghorn Sumac 169 



Stanleya 148 



Star-grass 130 



Steironema iSi 



Stellar ia 142 



Stickseeds 1S6 



Sticktight 2C9 



Stipa Ill 



Stitch-wort 142 



St. Johns-wort Familj- 171 



