Broad-leaved Dock, 122 Broad-leaved plantain, 159 Brome grass, 112 Bromus, 111 Buckwheat family, 119 Buckwheat, wild, 120 Bulbous buttercup, 132 Bull thistle, 164 Burdock, 162 Bur-grass, 112 Bur-marigold, 162 Bur-seed, 152 Bursa, 134 Buttercup, bitter, creeping, or tall, 131 Butter and eggs, 156 Camelina, 134 Canada thistle, 164 Canadian blue grass, 116 Capriola, 113 Capsella, 134 Carduus, 164, 165 Carpet-weed, 128 CAR´UN-CLE, an excrescence or protuberance near the hilum of a seed. Caryophyllaceae, 128 Cashew family, 145 Catch-fly, 129, 130 Catmint, 154 Catnip, 154 Celandine, 132 c. m. centimeter, see ruled lines on last page, 183 Cenchrus, 112 Centaurea, 163 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.