452 



INDEX. 



Tarweed 



191 



Urticaceae 





328 



Water-wort 





40 



'rcniin.i 



90,93 



Urticeae 





329 



Water-wort Family 





39 



Tetradymia 



139. 204 



Utricularia 





290 



White Fir 





430 



Teuoriam 



292, 294 









While Sage 





311 



Tiialictruin 



2,5 



Vacciuieae 





226 



Whiteweed 





199 



Thamuosina 



45 



Vaccinium 



226 



227 



Whitlow-Grass 





16 



Tha>piuni 



114, 117 



Valeriana 





128 



Whitlow-wort 





303 



Thelesperma 



130, 190 



Yaleriauaceae 





128 



Whortleberry 





228 



Thelypodium 



15,21 



Valerian Family 





128 



Wild. Balsam-Apple 





108 



Thermopsis 



50,52 



Vanilla Grass 





406 



Wild Oat Grass 





415 



Tuimbleberry 



80 



Venus's Looking-glas 





225 



Wild Rye 





427 



Thin Grass 



412 



Veratrum 



347 



353 



Willow 





334 



Thistle 



212 



Verbena 



290 



291 



Willow Family 





334 



Thlaspi 



16, 26 



Verbenaceae 





290 



Willow-Herb 





101 



Thoru 



88 



Verbesina 



136 



188 



Wind flower 





3 



Thorn Apple 



268 



Vernonia 



130 



141 



Winged Pigweed 





307 



Thorough-wax 



116 



Yeruouiaceae 



129 



130 



Winter Cress 





23 



'1 horoughwort 



142 



Veronica 



272 



282 



Winter Fat 





311 



Tiarella 



90,93 



Vervain 





291 



Wintergreen 





230 



Tickseed 



189 



Vervain Family 





290 



Wire Grass 





357 



Tiilaea 



98 



Vesicaria 



16,2 



Wolf-berry 





125 



Timothy 



410 



Vetch 





72 



Wolfsbane 





11 



Toad- Flax 



273 



Viburnum 



123 



124 



Woodbine 





125 



Tobacco 



270 



Vicia 



51,7 



Wood Fern 





443 



Totieldia 



847,354 



Vine Family 





48 



Wood Grass 





406 



Towusendia 



132, 150 



Viola 





28 



Wood Nettle 





330 



Tradescantia 



355 



Violaceae 





28 



Wood Reed Grass 





413 



Tragia 



324 



Violet 





28 



Wood Rush 





356 



Tribulus 



43 



Violet Family 





28 



Woodsia 



439 



,444 



Trifolium 



50,54 



Virginia Creeper 





48 



Wormwood 





199 



Triglochin 



362, 304 



Virgin's-Bower 





2 



Woundwort 





299 



Triodia 



401, 417 



Vitaceae 





48 



W>ethia 



135 



,184 



Triplasis 



401, 418 



Vitis 





48 









Triple-awned Grass 



407 









Xanthium 



134 



182 



Trisetum 



400, 415 



Water-Cress 





24 



Xerophyllum 



347 



,354 



Trollius 



2,9 



Water Hemlock 





116 









Trumpet Weed 



142 



Water Hemp 





305 



Yamp 





115 



Tubuliflorae 



129 



Water Horehound 





294 



Yarrow 





198 



Tule 



367 



Waterleaf 





254 



Yellow Pine 





432 



Tumble-weed 



305 



Waterleaf Family 





254 



Yellow Pond-Lily 





12 



Twayblade 



343 



Water-Lilv Family 





12 



Yellow Rattle 





288 



Twin -flower 



124 



Water-Milfoil 





99 



Yucca 



346,3c 



Typha 



359 



Water-Milfoil Family 





99 









Typhaceae 



359 



Water Parsnip 





116 



Zanichellia 





362 







Water Pimpernel 





235 



Zauschneria 





101 



Ulmaceae 



329 



Water-Plantain 





361 



Zinnia 



135 



,182 



Ulmus 



329 



Water-Plantain Family 



361 



Zygadenus 



347 



,353 



Umbelliferas 



112 



Water-Starworts 





328 



Zygophyllaceae 





43 



Urtica 



329,330 















