INDEX. 



333 



Sanguinaria, 128 

 Sanguisorba, 152 

 Sanicle, 209 

 Sanicula, 208 

 Santalaceae, 269 

 Santalales, 269 

 Sapindaceae, 185 

 Sapindales, 181 

 Saponaria, 117 

 Sarothra, 192 

 Sarraceniaceae, 140 

 Sarraceniales, 139 

 Sarsaparilla, 207 



Bristly 207 



Wild," 207 

 Sassafras, 20O 

 Satureia, 252 

 Saururaceae, 90 

 Saururus, 90 

 Savory, 252 



Summer, 252 

 Saxifragaceae, 142 

 Saxifrage, 142 



Early, 142 



Golden, 143 



Swamp. 142 

 Saxifrage Family, 142 

 Scarlet-oak, 99 

 Scarlet-strawberry, 149 

 Scarlet-thorn, 156 

 Schizachyrium, 12 

 Scirpus, 41 

 Scleria, 46 

 Scoke, 112 

 Scorpion-grass, 241 

 Scotch-broom, 162 

 Scotch-thistle, 312 

 Scrophnlaria, 258 

 Scrub chestnut-oak, 100 

 Scrub-pine, 2 

 Scurvy-grass, 134 

 Scutellaria, 246 

 Sedaceae, 141 

 Sedge, 47 

 Sedge Family, 38 

 Sedum, 141 

 Seedbox 203 

 Self-heal, 249 

 Seneca-snakeroot, 177 

 Senecio, 310 

 Senna, 159 



Wild, 159 

 Senna Family, 158 

 Sensitive-pea, 159 

 Sensitive-plant, 159 



Wild, 159 

 Sericocarpus, 292 

 Service-berry, 154 

 Sesame-grass, 12 



Shag-bark hickory, 95 

 Sheepberry, 275 

 Sheep-laurel, 217 

 Sheep-sorrel, 105 

 Shell-bark, 95 

 Shepherd 's-purse, 132 

 Shepherd 's weather-glass, 



222 

 Sherardia, 273 

 Shin-leaf, 214 

 Shining-willow, 92 

 Shooting-star, 222 

 Short-leaf pine, 2 

 Showy-orchis, 84, 85 

 Shrubby-althaea, 190 

 Shrubby-bittersweet, 184 

 Shrubby St. John's-wort 



192 

 Sicyos, 279 

 Sideritis, 247 

 Side-saddle-flower, 140 

 Silene, 117 

 Silkweed, 229 



Common, 230 

 Silky-cornel, 206 

 Silphium, 302 

 Silver-leaved poplar, 91 

 Silver-maple, 185 

 Simaroubaceae, 175 

 Sinapis, 135 

 Sisymbrium, 133 

 Sisyrinchium, 82 

 Slum, 212 

 Skullcap, 246 



Mad-dog, 247 

 Skunk-cabbage, 66 

 Sleepy-catchfly, 117 

 Slippery-elm, 104 

 Slough-grass, 29 

 Small-flowered crowfoot, 



123 

 Smilacaceae, 79 

 Smilax, 79 

 Smilax Family, 79 

 Smooth-azalea, 217 

 Smooth-gooseberry, 145 

 Smooth-winterberry, 183 

 Smooth yellow-violet, 197 

 Snakehead, 259 

 Snakeroot, 



Black, 120 



Button, 288 



Sampson's, 226 



Seneca, 177 



Virginia, 279 



White, 287 

 Snapdragon, 258 

 Sneezeweed, 308 

 Snow-berry, 275 



Soapberry Family, 185 

 Soapwort, 117 

 Soapwort-gentian, 226 

 Solanaceae, 237 

 Solanum, 239 

 Solidago, 290 

 Solomon 's-seal, 77 

 Sonchus, 316 

 Sorghastrum, 13 

 Sorrel, 105 



Field, 105 



Sheep, 105 

 Sour-cherry, 158 

 Sourgrass, 174 

 Sour-gum, 206 

 Southern yellow-birch, 97 

 Sow-thistle, 316 

 Sparganiaceae, 4 

 Sparganium, 4 

 Spartina, 28 

 Spathyema, 65 

 Spear-grass, 52 

 Spearmint, 256 

 Spearwort, 



Creeping, 123 



Water-plantain, 123 

 Specularia, 281 

 Speedwell, 261 



Common, 262 



Corn, 261 



Field, 261 



Ivy-leaved, 261 



Marsh, 262 



Purslane, 262 



Thyme-leaved, 262 



Water, 262 

 Spermatophyta, 1 

 Sphenopholis, 31 

 Spice-bush, 200 

 Spiderwort, 68 

 Spiderwort Family, 67 

 Spike-grass, 32 

 Spikenard, 207 

 Spike-rush, 43 

 Spindle-tree, 183 

 Spiraea, 146 

 Spirodela, 66 

 Splatter-dock, 126 

 Spondiaceae, 181 

 Spoon-wood, 217 

 Sporobolus, 24 

 Spotted-cowbane, 211 

 Spotted-wintergreen, 215 

 Spring-beauty, 113 

 Spring-cress, 137 

 Spruce-pine, 2 

 Spurge 179 



Caper, 180 



Cypress, 180 



