INDEX 



Sida, Prickly 194 



spinosa • - 194 



Silene antirrhina 85 



latifolia 85 



stellata 87 



virginica 86 



Silky Thimbleweed. . . 104 

 Silphium integrifolium 



360 



laciniatum 359 



perfoliatum 360 



. terebinthinaceum.. .359 



Silver Weed 152 



Silver-leaved Nightshade 



295 



Sisymbrium altissimum 



128 



officinale 128 



Sisyrinchiumalbidum. 66 



angustifolium 66 



gramineum. . 66 



Slum cicutaefolium. . .220 

 Skullcap, Heart-leaved 



275 



Little 276 



Mad-dog 276 



Marsh 275 



Showy 276 



Skunk Cabbage 42 



Sky-blue Aster 350 



Sleepy Catchfly 85 



Slender Gerardia 312 



Small Enchanter's 



Nightshade. . . .213 



Solomon's Seal 59 



"White Dogwood . . . 226 

 Lady's Slipper. . . 68 

 Smaller Yellow Lady's 



Slipper 68 



Small-flowered Crowfoot 



97 



Phacelia 258 



Talinum 90 



Verbena 270 



Smartweed, Water. . . 79 

 Smilacina racemosa. . 57 



stellata 58 



trifolia 58 



Smilax herbacea 63 



rotundifolia 63 



Smoke Tree 184 



Smooth Aster 352 



Beardtongue 305 



False Foxglove 311 



Phlox 252 



Rock Cress 135 



Ruellia 316 



Sumach 184 



Sweet Cicely 218 



White Lettuce 391 



Yellow Violet 203 



Smooth-leaf Honeysuckle 



321 



Snakeroot, Black 216 



Button 215, 343 



Seneca 180 



Short-styled Black. 216 



Virginia 77 



White 341 



Sneezeweed, Common. 3 75 



Five-leaved 374 



Purple-head 374 



Snow Trillium 61 



Soapberry Family . . 190 



Soapwort 88 



Soft Agrimony 155 



Soft-hairy FalseGromwell 

 266 



SOLANACEAE 293 



Solanum carolinense. . 295 



Dulcamara 293 



elaeagnif olium 295 



nigrum 294 



rostratum 295 



Solidago altissima. . . .348 



canadensis 349 



graminif olia 348 



juncea 347 



latifolia 347 



nemoralis 348 



rigida 349 



Solomon's Seal, False . 58 



Great 59 



Small 59 



Three-leaved False 



58 



Sonchus asper 388 



oleraceus 388 



Sorrel, Creeping Yellow 



Wood 175 



Great Yellow Wood. 176 



Lady's 176 



Violet Wood 175 



Yellow Wood 176 



Sour Grass 176 



Southern Black Haw.. 323 



Crab. . 147 



Loosestrife 231 



Tickseed Sunflower.372 



Sow Thistle, Common.388 



Spiny-leaved .... 388 



Spanish Bayonet 62 



Needles 372 



Spatterdock 91 



Spearmint 291 



Spearwort, Oblong- 

 leaved ...... 96 



Specularia perfoliata . 328 



Speedwell, Corn 310 



Purslane 310 



Thyme-leaved 309 



Spice Bush 118 



Spiderwort 44 



Family 44 



Short-stemmed. ... 44 

 Spigelia marilandica. .234 



Spiked Lobelia 332 



Loosestrife 206 



Spikenard, False 57 



Spiny-leaved Sow Thistle 



388 



Spiraea prunifolia. ... 146 



salicifolia 146 



tomentosa 146 



Spotted Touch-me-not 



191 



Spreading Dogbane . . 240 



Spurge 182 



Spring Avens 153 



Beauty 89 



Broad-leaved 89 



Cress 134 



Purple 134 



Harbinger of 219 



Spurge Family 181 



Flowering 182 



Spreading 182 



Squaw Weed 381 



Squirrel Corn 122 



Stachys cordata 284 



palustris 284 



Staff Tree 188 



Family 187 



Vine 188 



Stag Bush 323 



Stalked Ruellia 316 



Water Horehound. . 290 

 Staphylea trifolia .... 189 

 STAPHYLEACEAE 189 

 Star, Cylindric Blazing 



343 



Grass 62, 64 



Large Blazing 343 



Marsh Blazing 344 



Prairie Blazing 344 



Shooting. 233 



Starry Campion 87 



Steeple Bush 146 



Steironem^a ciliatum. .232 



intermedium 231 



lanceolatum 231 



quadriflorum 232 



radicans 231 



Stellaria media 82 



Stemless Lady's SUpper 



68 



Stickseed, Hairy 262 



Sticktight 372 



Stiff Goldenrod 349 



Rosinweed 360 



Tickseed 371 



Water Crowfoot ... 96 



Stonecrop 138 



Ditch 138 



Showy 138 



Stoneroot 292 



Stoneseed 265 



Strawberry Bush, 



Running 187 



Hill 150 



Wild . . . ; 150 



Yellow 152 



Striped White Violet . 202 

 Strophostyles helvola. 174 



umbellata 174 



Stylophorum diphyllum 



120 



Sullivant's Honeysuckle 



321 



Sumach, Poison 185 



Shining 184 



Smooth 184 



Sundrops, Common. .211 



Meadow 211 



Sunflower, Common . . 368 



Crownbeard 370 



False 362, 375 



Pale 369 



Prairie 368 



Southern Tickseed. .372 



Swamp 375 



Tickseed 372 



Western Tickseed. .372 

 Susan, Black-eyed.. . .364 



Brown-eyed 364 



Swamp Betony 313 



403 



