, 69

Black Ash, 88

Blackberry, 53

Black Bindweed, 28

Black Cherry, 54

Black Currant, 49, 50

Black-eyed Susan, 128

Black Haw, 111

Black Jack Oak, 22

Black Locust, 58

Black Maple, 70

Black Medick, 60

Black Mustard, 44

Black Oak, 23

Black Raspberry, 53

Black Snakeroot, 82

Black Spruce, 1

Black Swallow-wort, 90

Black Walnut, 21

Black Willow, 20

Bladder Campion, 34

Bladder Nut, 69

Bladder Nut Family, 69

Bladderwort, 106

Bladderwort Family, 105

Blazing Star, 13, 121

Blephilia, 96

Blite, 29

Bloodroot, 41

Bloody Dock, 26

Blue Ash, 88

Bluebell, 93, 94

Blueberry, 86

Blue Cohosh, 40

Blue-eyed Grass, 15

Blue-eyed Mary, 104

Blue Flag, 15

Blue Grass, 7

Blue Hearts, 104

Blue-joint, 5

Bluets, 108

Blue Violet, 76

Blueweed, 94

Boehmeria, 24

Bog Rosemary, 86

Boltonia, 131

Boneset, False, 122

Borage, 93

Borage Family, 93

Boraginaceae, 93

Borago, 93

Bowman's Root, 57

Box Elder, 70

Brasenia, 35

Brassica, 43, 44

Brauneria, 131

Braya, 47

Bristly Locust, 58

Bristly Sarsaparilla, 80

Brome-grass, 7

Bromus, 7

Broom-rape Family, 106

Buchnera, 104

Buckbean, 88

Buckeye, 70

Buckhorn, 107

Buckthorn, 71

Buckthorn Family, 71

Buckwheat, 27

Buckwheat, False, 28

Buckwheat Family, 25

Buffalo Berry, 77

Buffalo Bur, 100

Buffalo Clover, 61

Bugbane, 39

Bugle, 98

Bugle Weed, 95

Bug-seed, 28

Bulrush, 7

Bur Clover, 60

Bur Cucumber, 112

Burdock, 117

Bur Marigold, 124

Burnet, 57

Bur Oak, 23

Bur-reed, 2

Bur-reed Family, 2

Bush Clover, 61, 63

Bush Honeysuckle, 110

Butter-and-eggs, 102

Buttercup, 36, 37, 38

Butterfly Weed, 91

Butternut, 21

Butterwort, 105

Button Bush, 108

Cacalia, 122

Cactaceae, 77

Cactus Family, 77

Cakile, 45

Calamagrostis, 5

Calamint, 97

Calla, 9

Callirhoe, 73

Callitrichaceae, 68

Callitriche, 68

Calopogon, 16

Caltha, 36

Calypso, 17

Camassia, 14

Camelina, 42

Camomile, 130

Campanula, 112

Campanulaceae, 112

Campion, 33, 34

Canada Thistle, 118

Canada Violet, 76

Canadian Blue Grass, 7

Cancer-root, 106

Cannabis, 24

Caper Family, 47

Capparidaceae, 47

Caprifoliaceae, 109

Capsella, 46

Caraway, 83

Cardamine, 45, 47

Cardinal Flower, 113

Carduus, 118

Carex, 8

Carpet-weed, 31

Carpet-weed Family, 31

Carpinus, 21

C