PLANTS OF IOWA 



261 



Skull-cap 209 



Small 209 



Marsh 209 



Veined 209 



Slender Parosela 183 



Slender Ladies' Tresses 153 



Slender Fimbristylis 141 



Slender Cotton-grass 142 



Slender Button-snakeroot .... 224 



Sycamore 176 



Slime Moulds 7 



Small Wild Bean 186 



Small Red-root 191 



Smaller Enchanter 's Night- 

 shade 197 



Small Melic-grass 136 



Small Wild Bean 186 



Small flowered Leaf -cup 230 



Small Flowered Coral Root... 154 



Smartweed 160 



Smilax 151 



Smuts 51 



Smoother Sweet Cicely 198 



Smooth Hedge Nettle 210 



Smooth Ruellia 217 



Snowberry 219 



Snake-root 198 



Clustered 198 



Short-styled 198 



Large-fruited 198 



Button 198 



Snake-head 213 



Soapwort 164 



Southwestern Persicaria 161 



Solomon 's Seal 150 



Star flowered 150 



Two-leaved 151 



Hairy 151 



Smooth 151 



Spike-rush 140 



Purple 140 



Ovoid 141 



Creeping 141 



Needle 141 



Wolf's 141 



Matted 141 



Spring Scorpion-grass 207 



Spring Beauty 164 



Spring Rock Selaginella 124 



Spreading Chervil 198 



Spotted Touch-me-not 191 



Spear Grass 137 



Weak 137 



Sylvan 137 



Wolf's 137 



Spurge 188 



Geyer 's 188 



Round-leaved Spreading . . . 188 

 Thyme-leaved 188 



Ridge-seeded 188 



Upright L89 



Flowering 189 



White-margined L89 



Toothed 189 



Various Leaved L89 



Blunt leaved L89 



Reticulate Seeded 189 



Petty L89 



Tinted 189 



Cypress 189 



Spreading Aranche 162 



Spiderwort 117 



Reflexed 148 



Short-stemmed 148 



Spider Flower 174 



Spear-mint 211 



Spiny Sow-thistle 222 



Speedwell 214 



Water 214 



Skull-cap 214 



Thyme-leaved 215 



Purslane 215 



Corn i' 1 .") 



Squirrel Corn 170 



Squirrel-tail Grass 139 



St. John's-wort 193 



Great 193 



Shrubby 193 



Round-fruited !:•;: 



Common 1 93 



Spotted 193 



Dwarf 193 



Clasping-leaved 193 



Canadian 193 



Drummond 's 193 



Marsh 193 



Strawberry 177 



Wild 177 



Scarlet 177 



Wood 177 



European Wood 177 



Stickseed 207 



Hairy 207 



Virginia 207 



Nodding 207 



Stemless Loco Weed 184 



Staff-tree 190 



Stalked Water Hoarhound 211 



Stonecrop 174 



Star Grass 152 



Sumac 189 



Staghorn 189 



Smooth 189 



Sweet-scented L89 



Swamp Lousewort L' 1 »; 



Swamp Squaw-weed 235 



Sweet Scented White Water 



Lily 166 



