INDEX. 



309 



Page. 



Berberidaceae 160 



Berberis 160 



B ermuda grass 85 



Betony, wood 254 



Betula 137 



Betulaceae 136 



Bibliography of District flora 13 



Bidens 288 



Big bluestem 72 



Bignonia 254 



Bignoniaceae 254 



Bikukiilla 163 



Bilderdykia 146 



Biltmoreash 227 



Bindweed 147,234 



Birch 137 



black 137 



cherry 137 



family 136 



red 137 



river 137 



sweet 137 



Bird-foot violet 208 



Bird's-foot trefoil 184 



Birth wort family 143 



Bishop-weed, mock 219 



Bitter cress 169 



dock 144 



Bitternut 136 



Bittersweet 199,248 



Black alder 199 



ash 227 



birch 137 



grass 118 



gum 220 



haw 261 



huckleberry 224 



jack 139 



locust 185 



medic 183 



mustard 170 



oak 140 



poplar 134 



raspberry 175 



snakeroot 156 



sumac 198 



walnut 135 



willow 133 



Blackberry lily 126 



sand 175 



swamp 1 75 



tall 175 



Black-eyed Susan 286 



Bladder campion 154 



fern 56 



Bladdemut 200 



family 200 



Bladderwort 255 



family 255 



zigzag 255 



Blake, S. F 14 



Blazing star 119,275 



Blephariglottis 129 



Blephilia 244 



Bloodroot 162 



Blue beech 136 



Page. 



Blue cohosh 161 



dogwood 220 



flag 126 



lettuce 266 



phlox 235 



toad-Ilax 250 



vervain 239 



Bluebells 238 



Blueberry 224 



dryland 225 



early highbush 225 



family 224 



highbush 225 



Bluebottle •. . 293 



Blueeurls 241 



Blue-eyed grass 126 



Bluegrass 87 



Canada 88 



Kentucky 88 



Blue-hearts 253 



Bluestem, big 72 



little 72 



Bluets 259 



Boehmeria 143 



Bogs, flora of 20 



Bolle's poplar 135 



Boneset 274 



false 275 



upland 274 



Boott's fern 58 



Borage 238 



family 237 



Boraginaceae 23 7 



Borago 238 



Boston ivy 20 1 



Botanical Club of Washington 13 



Botrychium 5 2 



Bottle gentian 22 9 



Bottle-brush 92 



plantain 25 6 



Boimcing bet 15 6 



Boxelder 200 



Brachyelytrum 82 



Bracken 54 



Brainerd, Ezra, assistance in determination 



of violets 208 



Brake 54 



Brasenia 156 



Brassica 170 



Brassicaceae 16 3 



Brereton, John A 13 



Brittle fern 57 



Britton violet 208 



Britton and Brown's Illustrated Flora, co- 

 ordination of nomenclature with 16 



Broad bean 188 



Brome grass 89 



Bromus 89 



secalinus (illustration) 66 



Brooklime, American 252 



Brookweed 225 



Broom 183 



sedge 72 



Broomcorn millet 77 



Broom-rape 255 



family 25 4 



