Snakeroot, 158, 192, 196. 
Sneeze-weed, 210. 
Snowberry 204. 
Soapwort, 181. 
Solanum nigrum, 160. 
Solidago bicolor, 207. 
canadensis, 207. 
flexicaulis, 206. 
_hispida, 207. 
lanceolata, 207. 
latifolia, 206. 
missouriensis, 207. 
nemoralis, 207. 
rigida, 207. 
rigidiuscula, 207. 
serotina, 157, 207. 
serotina gigantea, 207. 
speciosa, 157, 207. 
tennutfolia, 207. 
uliginosa, 207. 
ulmifolia, 158, 207. 
Solomon’s seal, 157, 172. 
Sonchus asper, 160, 205. 
Sophia intermedia, 185. 
Sow-thistle, 160, 205. 
Spanish needle, 160, 210. 
Sparganium eurycarpum, 170. 
Spartina ' cynosuroides, 159, 167. 
Spathyema foetida, 171. 
Speedwell, 160, 202. 
Spiderwort, 171. 
Spikenard, 172, 195. 
Spike-rush, 168. : 
Spiraea salicifolia, 153, 186. 
Spiranthes gracilis, 174. 
Spirabolus cuspidatus, 166. 
Spiradela polyrrhiza, 171. 
Spring beauty, 157, 180. 
Spruce, Norway, 155, 156. 
Spurge, 160, 192. 
Squaw weed, swamp, 211. 
Squirrel corn, 184. 
Stachys aspera, 201. 
palustris, 201. 
Staphylea trifolia, 154, 192. 
Star-grass, 173. 
Steironema ciliatum, 197. 
longifolium, 197. 
quadrifiorum, 197. 
Stellaria longifolia, 181. 
media, 181. 
Stipa spartea, 166. ° 
Stitchwort, 181. 
Strawberries, 187. 
Struthiopteris struthiopteris, 157, 163. 
Sullivantia ohionis, 186. 
sullivantii, 186. 
Sumach, 154, 155, 192. 
Sunflower 160, 209, 210. 
Sweet Cicely, 196. 
Sweet-clover, 189. 
Sycamore, 186. 
INDEX. 
223 
Symphoricarpos occidentalis, 154, 204 
. racemosus, 204. 
Symplocarpus foetidus, 171. 
Syndesmon thalictroides, 157, 182. 
Synosma suaveolens, 211. 
Sysymbrium officinale, 184. 
Taenidia integerrima, 196. 
Tanacetum vulgare, 160, 210. 
Tansy, 160, 210. 
Tansy-mustard, 185. 
Taraxacum officinale, 159, 205. 
Tazrus canadensis, 153, 165. 
Tephrosia virginiana, 190. 
Yeucriun canadense, 200. 
Thalictrum dioicum, 183. 
purpurascens, 183. 
Thelypodium pinnatifidum, 184. 
Thistle, 159, 160, 180, 201, 211. 
Thornapple, 159. 
Tickseed, stiff, 210. 
Tick-trefoil, 190. 
Tilia americana, 154, 194. 
Timothy, 159, 166. 
Tobacco, Indian, 205. 
Touch-me-not, 193. 
Tradescantia bracteata, 171. 
reflexa, 171. 
virginica, 171. 
Traxzus canadensis, 165. 
Trees and shrubs. of 
county, 153. 
Trifolium arvense, 189. 
hybridum, 190. 
pratense, 189. 
procumbens, 160: 
repens, 160, 190. 
Trillium, 157. 
erectum, 172. 
nivale, 158, 172. 
Triosteum aurantiacum, 204. 
perfoliatum. 204. 
Twayblade, 174. 
Twin-flower, 204. 
Typha latifolia, 170. 
Ulmus americana, 153, 178. 
fulva, 154, 162. 178. 
racemosa, 154, 178. 
Unifolium canadense, 172. 
Urtica gracilis, 160, 178. 
Urticastrum divaricatum, 178. 
Utricularia vulgaris, 203. 
Uvularia grandiflora, 157, 171. 
Sessilifolia, 157, 171. 
Vaccaria vaccaria, 181. 
Vagnera racemosa, 157, 172. 
stellata, 157, 172. 
Vallisneria spiralis, 170. 
Velvet-leaf, 160, 194. 
Verbascum, 160. 
, inneshiek 
