INDEX 



Monk's-hood. 250, 254; bumblehee 



flower. 74; regular. 86 

 ^lonocotvledonous flowers, colors of, 



221. 2.57; blue among. 252 

 Mnnnni/chus vulpeculus, 124, 185 

 ^losquitoes, 161 

 Moth-flowers. 158, 1.59 

 ISIoths. two groups of. 140; nocturnal. 



i;32; 140 et seq.; number listed as 



flower-visitors. 126; number of species 



of. 126; plant-tissues pimctured by. 



102; species of smaller, 140; tongue 



of. 128 

 INIoimtain-laurel, 204 

 Mueller, Fritz, 13. 14. 148 

 Mueller. Hermann, 10. 12-16. 69. 80, 



98. 102. 130. 132, 160, 172, 174, 178. 



210, 212. 247 

 ^Mulleins. 194, 195 

 Musca, 161 

 IMustard, 224, 236; yellow and white, 



232 

 Myosotis, 10; versicolor, 223, 237 



Nasturtium, garden, 78, 90, 228, 232: 



bumblebee-flower. 77 

 Nectar, depth concealed. 124. 158. 159; 



w^aste of. 115, 116; weight of, 116 

 Nectar-guides. 65, 68 

 Nectaries, variation in length of, 158, 



159 

 Nectarless flowers, 56, 102, 202, 219 

 Needham, 185 

 Nemognatha, 182, 192 

 Nettles, 36. 38, 56, 223; nectar-guides 



on, 65, 68 

 New England, andrenid bees in, 120 

 New Jersey tea, 180; beetles on. 189, 



190; insect visitors of, 261, 262 

 New Mexico, species of Perdita bee in, 



112 

 New Zealand, red clover culture in, 71 ; 



flies in, 160 

 Nicotiana, longiflora, 154; noctiflora, 



154 

 Night-blooming cereus, 146 

 Nightshade. 196, 234 ; moth-pollinated. 



154; nectarless, 194 

 Nocluidx, 140 

 Nocturnal flowers, 130, 139 et seq., 146; 



color of, 206 

 Nymphaea advena, 106, 108, 230 



Oak-tree. 24, 28 



Odors, floral. 114; unpleasant. 161-164 



(Enothera, biennis, 1.50; laciniata, 236 



Old Dominion Fruit Company, 265 



Olive. 264 



One-sided flowers. 48-64 



Orange, nectar-secretion of bloom of, 

 115; punctured by moth, 102 



Orchids, 12. 13. 48. 159. 194. 222. 242; 

 Madagascar. 154. 158; moth- polli- 

 nated. 1.54, 158; nectarless, 102 

 regular form in. 86 



Orchis, color of, 64; blue, 136. 2,52; 

 greenish or white, 132; purple- 

 fringed, 132; showy, 84; globosa. 



134; Hahenaria, 132; maculata, 102; 



mnrio, 102; spectabilis, 84 

 "Origin of Species." 13 

 Ornilhnptera, 125 

 Overton. 245, 246 

 Owlet moth, 140 



Painted-cup, 76, 203 



Pansy, 48, 237, 252 



Panurginus, 112 



Panurgus, 120 



Papili'o asterias, 104 



Papilionaceae, 50, 64, 250 



Parnassia caroliniana, 112, 220 



Parsley, water, 242 



Parsnip, wild, 242 



Paul, Jean, 125 



Pea family, 48, 50-56, 60, 222, 242, 250; 

 change in position and color of, 56; 

 colors in, 64; form of, .50 



Peaches, punctures in, 102 



Pear, value of conspicuousness of, 212, 

 213; value of insect-pollination, 265; 

 Bartlett, 265 



Pear-trees, self-sterile varieties, 266 



Pedicularis, 56; sylvatica, 84 



Pelargonidin, 247 



Penny-cress, 230 



Perdita bee, 120; flowers visited by, 

 112, 121; species of, 112 



Perfect flowers, 262, 276 



PhiUips, Doctor, 4, 116 



Phlox, 132, 250 



Physalis, 194 



Phyteuma, 136 



Phytophagous beetles, 186, 189-192 



Picea marinna, 40 



Pickerel- weed, bee. 105, 106; nectar- 

 guides on, 65; insects attracted by, 

 106; number of bee visits to, per 

 minute. 90; white, 244 



Pigweed, 36, 223 



Pinch-trap flowers, 177 



Pine-trees, pollen of, 40, 45, 46; red, 

 40, 46; white, 38 



Pinkroot, 248 



Pinks, 64, 227; butterfly-flowers, 128, 

 130, 134; moth-pollinated, 151; red, 

 247; white, 2,34, 244 



Pinus sylvestris, 182 



Pinweeds, 227 



Pitfall-flowers. 164. 167. 168 



Plateau, Felix. 173, 212, 214. 216 



Plums. American and European. 270; 

 ground. 203; Japanese. 261. 270; 

 punctures in, 102; nimiber of vari- 

 eties of, 263 



Pognnia ophioglossoides, 84 



Pollen-flowers, 194-202; anthers of, 

 200; devices of, for placing pollen on 

 insects, 196-200; variety in colora- 

 tion of. 200 



Pollination, cross, 12, 26, 28; insect, 4, 

 6, 46, 160, 224, 262; self, 26, 28, 30. 

 224, 262; wind. 20-46 



Poly gala, 244 



Polygalacese, 254 



Polygonum sagittatum, 96 



Polypetalous flowers, colors of, 221, 



284 



