
QS er Fa ee 
a ee ee ee — ell 
et aN Tee 
3-awn Al, 42 
3-awned Grass At 
3-veined Knot-weed 138 
4 o'clock 146 
4 o'clock Family 146 
5-finger JN EVE MERA 
Abama 96 
Abbreviations 4 
Abies oT 
Abronia 147 
Abutilon 254 
Acer 249 
Aceraceae 249 
Acerates 309 
Achillea 408 
Achlys Lm 
Achryachaena 404 
Aconitum 167 
Aconogonon 139 
Actaea 164 
Actinella 407 
Adenocaulon 395 
Adenostegia 358 
Agastache 334 
Agoseris 247 
Agrimony 218 
Agropyron 69 
Agrosteae 40 
Agrostemma 153 
Agrostis 47 
Aira 50 
Ajzoaceae 147 
Alaska Cedar yl 
Alaska Heather 297 
Alchemilla 217 
Alder 124 
Alexanders 278 
Alfalfa 230 
Alfalfa Dodder 310 
Alisma 35 
Alismaceae 539. 
Allionia 146 
Allium 99 
Allocarya 325 
Allotropa 293 
Alnus 124 
Alopecurus 47 
Index 
Index 
Alpine Avens 218 
Alstke Clover 232 
Alsine 156 
Alsinella 157 
Alum-root 200 
Alyssum 19] 
Amaranthaceae 145 
Amaranthus 145 
Ambrosia 398 
Amelanchier 222 
Ammannia 259, (260) 
Ammi 278 
Ammodenia (158) 
Ammodia (378) 
Amsinckia 328 
Amyegdalaceae 223 
Amyegdalinae 118 
Anacardiaceae 247 
Anacharis 36 
Anagallis 303 
Anaphalis 393 
Andromeda 297 
Andropogoneae 37 
Androsace 301 
Anemone 167 
Angelica 282 
Angiosperms byes f] 
Anisocarpus (402) 
Anogra 266 
Antelope Brush 219 
Antennaria 393 
Anthemeae 407 
Anthemis 408 
Anthoxanthium 40 
Anthriscus 276 
Antirrhineae 342 
Antirrhinum 343 
Ant-weed 358 
Apargidium (423) 
Aphyllon 360 
Apiaceae 271 
Aplopappus 379 
Apocynaceae 308 
Apocynum 308 
Apple Led 
Apple Family 221 
Aquilegia 165 
Arabis 189 
44] 
Araceae 89 
Aragallus 239 
Araliaceae 270 
Arbor-vitae 26 
Arbutus 298 
Arceuthobium 129 
Arcticae 120 
Arctium 417 
Arctostaphylos 298 
Arenaria 158 
Argentae 120 
Argentina 215 
Aristida 4| 
Anistolochiaceae 130 
Armeria 304 
Armeriaceae 304 
Arnica 412 
Arnica Tribe 411 
Arrhenatherum 51 
Arrow-grass 34 
Arrow-grass Family 34 
Arrow-head 35 
Arrow-wood 365 
Artemisia 410 
Artichoke 401, 419 
Arum Family 89 
Aruncus 209 
Asarum 130 
Asclepiadaceae 308 
Asclepias 309 
Ash 305 
Asparagus 107 
Aspen k2Z 
Asperugo 329 
Asphodel 95, 96 
Aster 383, 387, 390 
Astereae oye 
Aster Tribe Lie 
Astragalus 234, (239) 
Athysanus 188 
Atriplex 143 
Aulospermum 284 
Avena 53 
Aveneae 50 
Avens 218 
Avicularia 136 
Awl-wort 18] 
Azalea (296) 
