Centimeter, see ruled lines on last page, 183

Cerastium, 129

Chaetochloa, 117

Charlock, 133

Cheat, 112

Cheeses, 146

Chelidonium, 132

Chenopodiaceae, 124

Chenopodium, 124, 125, 126

Chess, barren, field, smooth, soft, 111

Chickory, 164

Chickweed, 129, 131

Chrysanthemum, 163

Cichorium, 164

Cicuta, 148

Cinquefoil, silvery, 138, 139

Cirsium, 164, 165

Claviceps, 110

Climbing false buckwheat, 121

Clover dodder, 151

Cockle, 128

Cocklebur, 171

CO'MA, a tuft of hair on a seed.

Common chickweed, 131

Common milkweed, 149

Common speedwell, 157

Compositae, 160

Composite family, 160

Conium, 148

Conringia, 135

Convolvulaceae, 150

Convolvulus, 150

Corn camomile, 161

Corn gromwell, 153

Coronilla, 139

Couch grass, 110

Cow-cress, 136

Crab-grass, 113-114

Crassulaceae, 138

Creeping buttercup, 132

Crepis, 165

Cress, cow, 136

Crimson clover, 141

Crowfoot, 131

Crowfoot family, 131

Cruciferae, 132

Curled Dock, 122

Cut-leaved Crane's bill, 142

Cuscuta, 150, 151

Cycloloma, 126

Cynanchum, 149

Cynodon, 113

Cynoglossum, 152

Cyperaceae, 118

Cyperus, 118

Cypress spurge, 143

Daisy fleabane, 166

Dandelion, 170

Datura, 155

Daucus, 148

Dead nettle, 154

DEL'TOID, shaped like the Greek letter delta; triangular.

Devil's paint-brush, 167

Digitalis, 113

Diplotaxis, 135

Dipsaceae, 160

Dipsacus, 160

Dock, 121

Dock-leaved Persicaria, 120

Dodder, 150

Dog's fennel, 161

Echinochloa, 114

Elecampane, 167

Eleocharis, 118

Eleusine, 114

EL-LIP'TIC-AL, oblong and rounded at the ends; longer than oval.

EM'BRY-O, the little plant forming a part of the seed, usually
consisting of caulicle, one or more cotyledons and a plumule.

Eragrostis, 115

Erechtites, 165

Ergot, 110

Erigeron, 165, 166

Erodium, 142

Erysimum, 135

Euphorbia, 143, 144

Euphorbiaceae, 143

Evening primrose, 147

Evening primrose family, 147

Fall dandelion, 168

False Buckwheat, 121

False flax, 134

FE'MALE FLOW'ER, one having pistils only, but no stamens;
pistillate flower.

FER'TILE, producing fruit, or reproductive bodies of any kind.

Field dodder, 150

Field garlic