INDEX. 



441 



White Hellebore, 76 



White Hoarhound, 296 



White Mustard, 160 



White Sage, 118 



White Spruce, 8 



W'hite Water-crowfoot, 142 



Whitlow-grass, 161 



Whitlow-wort, 121 



Whitlow-wort Family, 121 



Whorl-grass, Water, 39 



Wild Bergamot, 298 



Wild Crab-grass, 36 



Wild Liquorice, 213 



Wild Morning-glory, 273 



Wild Mustard, 160 



Wild Oat-grass, 35 



Wild Oats, 23 



Wild Rye, 56 



Wild Sarsaparilla, 249 



Wild Spikenard, 84 



Willow, 92 



Willow Family, 91 



Willow-herb, 241 



\Vind-flower, 140 



Winter-cress, 160 



Wintergreen, 259 



Wintergreen, Creeping, 259 



Wintergreen, one-flowered, 258 



Wintergreen Family, 258 



Winter Sage, 118 



Wire Grass, 23, 29 



Witch-grass, 21 



Wood-Fern, 2 



Wood Reed-grass, 30 



Wood-rush, 80 

 Woodsia, 2 



Wood-sorrel, Violet, 220 

 Wood-sorrel, Yellow, 220 

 Wood-sorrel Family, 220 

 Wormwood, 382 

 Wulfenia, 313 

 Wyethia, 372 



Xanthium, 329 

 Xanthoxalis, 220 

 Ximenesia, 374 

 Xylophacos, 206 

 Xylorrhisa, 351 

 XYRIDALES, 75 



Yard-grass (Polygonum) 

 Yarrow, 382 

 Yellow-rattle, 319 

 Yellow Water-lily, 147 

 Yellow Wood-sorrel, 220 

 Yucca, 85 

 Yucca, 85 

 Yucca Family, 85 



Zanichellia, 13 

 ZANICHELLIACE^;, 12 

 Zinnia, 371 

 Zizia, 252 



ZoYSIEjE, 2O 



Zygadenus, 76, 77 

 ZYGOPHYLLACE^:, 220 

 Zygophyllidium, 224 



