(340 ) 
Barbarea...... ..+6- 55, 224 
vulgaris.. 1.2... .eeee 224 
Barberry...... sé eoeenid 232 
Barley .......... seeeee Bld 
Bay=tre@wisscvesesescics 231 
Beard-grass ....... .... 300 
Beckmannia.... ....... 298 
eruceformis. ......... 298 
Bed-straw .......--.5005 126 
Beggar-ticks ........... 96 
Bellflower... ...........122 
Bent-grass,.........26 . 800 
BERBERIDEH....... vee 281 
Berberis............. $1, 2382 
aquifolium............ 232 
TOTVOBA ..- 2 scene oes 232 
pinnata....... seininnis 232 
repens ........... 100 232 
Berula..... x shes 28, 180 
angustifolia ..... ...+. 180 
BETULACEH .....00 see .271 
Bidens.,.......... -62, 68, 96 
chrysanthemoides..... 96 
Big-root.......... sees 122 
Big-tree.. ......... oe 828 
Bigelovia.........60, 63, 84 
arborescens...... wees 84 
Bind-weed...... ie alanis 168 
Bitter-Cress ..... wee 420227 
Blackberry....... edits 247 
Bladder-fern............ 334 
Bladderwort........... .170 
Blechnum.............. 333 
Bpicant. ....0..-.005 333 
Bleeding-heart.......... 228 
Blennosperma,...... 69, 106 
Californicum.......... 107 
Blue-Curls...........265 132 
Blue-eyed Grass ....... . 282 
Blue-pine...........5+. 326 
Boisduvalia.........5 37, 244 
cleistogama,....... oo 244 
densiflora ....,....... 244 
glabella .............. 244 
BORRAGINEB........... 155 
Botrychium ............ 335 
ternatum............. 335 
Bottle brush grass ...... 315 
Bowlesia......  ....27, 183 
lobata........... seen ABS 
Boykinia............ 30, 186 
occidentalis. ... ..... 186 
Box-Elder ........ doesev IL 
Brass-buttons........... 109 
Bracken........- aaa 332 
BYAKG)  pccoicinsaiy iesssinnatocd 332 
Brassica. ..........- 56, 225 
campestris............ 225 
NIQTA... ces eeeeeeeee 225 
Brickellia..........005 «112 
Bridal-wreath........... 247 
BYIZBs.siivawe aca can 14, 310 
media ....6....000- ..310 
Brizopyrum.........77, 307 
maritimum........ ... 308 
Brodiaa.........5 8, 32, 288 
congesta......... oe 288 
grandiflora..... wee 288 
MUNOV seven givee caw ee 288 
terrestrisi.c.s geese eee 288 
Brome-grass.,..........d11 
Bromus.......-..00 14, 311 
ciliatus....,..... ivereedl2 
grandiflorus..... ore O12 
