INDEX 



Codling-moth^ 177 



Coleoptera, 178 et seq. 



Colleles, 112, 120 



Collinson, Peter, 2 



Colors of flowers, 8-11, 48, 64, 65, 134- 

 138, 200; changes in, 56, 222, 223, 230, 

 236, 237, 244, 250; conspicuous, 203 

 el seq.; contrast in, 206-216; deter- 

 mined by plant pigments, 238; dis- 

 tribution* of, 221-224; insect prefer- 

 ences in, 212; variety of, 92, 208 



Columbines, 64, 194, 222; bumblebee- 

 flowers, 74, 76; nectar-secretion of, 

 98; punctured by bumblebees, 98, 

 99; reversion to regular form of, 86; 

 wild. 76, 248 



Compositx, 110, 112, 223, 234; bee 

 visitors of, 120, 121; beetles on, 180, 

 182; blue flowers of, 253, 254; but- 

 terflv visitors of, 132, 138; color in, 

 242; red-flowered, 248 



Cone trees, 38-46 



Ctmiferales, 40 



Conifers, 40, 46 



Conspicuousness, flower, advantages 

 of, 209-220; significance of, 9-12 



Coquillet, 144 



Cornels, 180, 190 



Cornus, 180 



Corydalis, 102 



Cotton, 116 



Coville, 263, 272, 276 



Cow-wheat, 56 



Cranberries, bee-pollination of, 271; 

 number of varieties of, 263 



Crataegus, 278 



Crepis aurea, 134 



Crocus, moth-pollinated, 154 



Cross-pollination, 12, 262; adaptations 

 favoring, 26, 28; between different 

 species, 277, 278; in fruit-culture, 

 275-278 



Croton texensis, 112 



Crowfoot, water, 236 



Crowmbeard, 242 



Cucumbers, bee-pollination of, 272, 274 



Cucurbita. maxima, 214; Pepo, 114 



Cucurhilacese, 272 



Cudweed, 242 



Currant, 188; flowering, 223; golden, 

 237 



Custard-apple, 256 



Cycadeoidca. 224 



Cvcadophytes, 46 



Cycads, 40, 46 



Cyclamen, 238 



Dahlia, 232; variabilis, 92 



Daisy, 203 



Dance-flies, 110, 174, 177 



Dandelions, 203, 232 



Daphne striata, 134 



Darwin, Charles, 10-14, 17, 70, 86, 102, 



158, 210, 236, 252, 277 

 Darwin, Francis, 12 

 Dates, 264 

 Datura arborea, 139 

 Davis, J. Ainsworth, 17, 150 



Dead-nettle, 56, 102; nectar-guides on. 

 68 



De Candolle, 252 



Delpliinidin, 247 



Delphinium, 74; cardinale, 252; elalum. 

 74 



Delpino, 13, 178 



Dendrobium normale, 86 



Dermestids, 188 



Desniodium, 56, 198 



De Vries, 150 



Dewberries, number of varieties of, 263 



Dianthus, arenaria, 151; alroruber, 134: 

 barbatus, 128; deltoides, 128; super- 

 bus, 134; sylvestris, 134 



Di centra, 102 



Dicotyledonous flowers, 221, 252 



Diervilla trifida, 84 



Diptera flies, 160, 171 



Docks, 36 



Donacia, piscatrix, 108, 185; rufa, 10S 



Dracocephalum, 84 



Dragon-fly, 104 



Dragon's-head, 84 



Dutchman's-pipe, 168, 256 



Eimer, 126 

 Elateridse, 189 

 Elderberries, 188, 194, 200 

 Elecampane, 96, 132 

 Elm-tree, 24, 26, 28-30, 202 

 Emerson, 9 

 Empididse, 110, 174 

 Empis rufescens, 19, 174 

 England, red clover in, 70 

 Entomophily, 231 

 Epeolus, 112 



Epicauta pennsylvanica, 185 

 Epilobium molle, 96 

 Erica carnea, 132, 134 

 Eristalis tenax, 173 

 Eucalyptus, 92 

 Evergreen trees, 38-46 

 Everlasting-flower, 216, 242 

 Evolution, floral, 86, 222 



"Facts for Darwin," 14 



"Fertilization of Flowers, The," 13, 14 



Fertilization. See Pollination 



Feijoa, 264 



Fig. 264 



Figwort family, 48, 56, 60, 194, 242, 

 253; colors in, 64 



Fireflies, 188 



Fir-tree, 38, 40, 46 



Flag, blue, 134; beetle on, 124, 185 



Flies, 47, 104, 108, 160-177, 202, 264 

 habits of, in visiting flowers, 96 

 species of two-winged, 160, 161 

 stupid, 160: syrphid, 19, 36, 96, 160. 

 161, 172, 173 



Florida, "Big Sawgrass" in, 116 



Flower-food, surplus of. 115 



Flowers, adaptations of. tor effecting 

 pollination, 68, 69; dependence of, 

 on bee visitors, 48; two periods of 

 life cycle of, 262; influence of, 3-6; 

 how power of secreting nectar is lost 



281 



