INDEX 



305 



WlNTEHGRBEN 174 



Cheeping 175 



WiNTEBGBEEN FAM- 

 ILY 174 



Winter sage 77 



WIBE-GRA8825. 40, 51 

 WlTCH-QRASS 24 

 WOAD 98 



Wolf-berry 220 

 Wolfsbane 94 

 Wolf's Bean 131 

 Woodbine 154 

 Woodland Star ill 

 Wood Orchid 59 

 Wood-rush 52 

 Wood Sage 202 

 Woodsia 281 



wood-sobrel 149 



Wood-sorbel Fam- 

 ily 149 



Woolly Yellow 

 Daisy 257 



Wormwood 260 

 KOMAN 224 



Wyethia 254 



Xanthium 224 

 Xlmenesia 255 

 XerophyUum 50 

 Xylophacos 142 

 Xylorriza 240 

 Xylosteuin 220 



Yamp 168 



Yarrow 259 

 Yellow Bell 55 

 Yellow Flax 149 

 Yellow Pea 131 

 Yellow Philox 102 

 Yellow Pond Lily 



86 

 Yellow Battle 217 

 Yellow Kose 123 

 Yellow Saxifrage 



114 



Yellow Water- 

 cress 101 



Yellow Wood-sor- 

 bel 149 



Yebba Buena 204 



Yeeba Santa 192 



Yew 18 



Yew Family 18 

 Yoimgia 275 

 Yucca 56 

 Yucca Family 56 



ZanlchelUa 20 

 ZANNICHELLIA- 



CEAE 19 

 Zauchneria 163 

 Zinnia (64) 253 

 Zizia 169 

 Zosterella 50 

 Zygadenus (6, 6) 50 

 ZYGOPHYLLACE- 



AE 150 

 ZygophyUldium 151 



FLORA 



0/ the 



Rocky Mountains and Adjacent Plains 



containing descriptions of the native and naturalized flowering -plants 

 and fernworts, growing in 



Colorado, Utah, Wyoming, Idaho, 

 Montana, Saskatchewan, Alberta, 



and the neighboring parts of 



Nebraska, South Dokota, North 

 Dakota and British Columbia 



by 



P. A. RYDBERG, Ph.D. 



Curator, New York Botanical Garden 



Published by the author. Price $3.75, net. 



Address: 3304 Rochambeau Avenue, New York City. 



After more than twenty-five years of study of the Flora of the Rocky Mountain 

 region and seventeen years after the first description was drawn, the author has 

 presented this work to the pubhc. The Flora is a book of XII-|-111() pages octavo 

 and contains the description of 1038 genera and 5897 species of plantSj of which 

 respectively 13 and 43 are proposed as new, together with keys to families, genera 

 and species. The introduction contains also a history and scope of the work, in- 

 formations concerning 'nomenclature, pronunciation and accentuation of scientific 

 names, names of authors, common names, distribution, altitudes and life zones, 

 and tables of abbreviations, etc. The appendices give a summary, a list of new 

 genera, new species and new combinations pubhshed, a list of the authors of the 

 scientific names, a glossary of the botanical terms, and an index to Latin and Eng- 

 lish names. 



