26o 



INDEX 



Gmelin, 141 



Grass-embryos, 224 



Gray, Asa, 157 



Green dahlias, 113 



Green roses, 113 



Groups of plants, the great, 243 



(jymnosperms, ancestors of the, 232 



early, 245 



late, 24s 



Habit of life, consequences of an 



amphibious, 130 

 Half -race, 223 

 Uamamelis, 156 

 Haploid, 25, 3S 

 Hawaii, 145, 150 

 Hawaiian flora, origin of the, 175 

 Hawkweed, 76 

 Haworthia sp., 49 

 Hedge mustard, 42 

 Helix hortensis, 157 

 Hemerocallis Juha. 163 

 Hendangiosperma, 232 

 Hemicycadales, 211, 238 

 Hepatica, 128, 172, 174 

 Heredity, 45 



experimental study of, 55 



inheritance versus, 50 



Johannsen's conception of, 67 

 Heterozygous, 63 

 Hibiscus occuUroseus, 178 

 Hieraceum, 76 



auranUacum, 154 

 Hilldebrandia sandwicensis, 178 

 Honey-locusts, thornless, 113 

 Humbolt, 140 

 Hurricane grass, 146 

 Hybridizing, artificial, 58 

 Hydrangea, 156 

 Hydrophytes, ig6 



Idants, 7S 

 Idioplasm, 74 



Ms, 75 



Incrustation, 183 

 Indian corn, 69, 223 

 Indian pipe, 80 

 Indigenes, 177 

 Indusium, 8 

 Inheritance, 39, 92 



and environment, 66 



and reproduction, 50 



mechanism of, 73 



versus expression, 40 



versus heredity, 50 



what is, 46 

 Isoetes, 246, 247 



Jack-in-the-pulpit, 80 

 Jelly-fish, 194 



Johannsen, 40, 67 



Jordan, 120 



Kale, 112 



Kauri pine, 233 



Keeling Islands, 143 



Kerner, 95 



Kingdom of plants, the great 



groups of the, 249 

 Knight, 120 

 Kohlrabi, 112 

 Kolreuter, 120 

 Krakatoa, 146, 149, 17s 



Labrador, 160 

 Lagenostema Lomaxi, 205 

 Lakes, filling up of, 187 

 Lamarck, Jean Baptiste, 89 

 Lamarckism, arguments against, 89 

 Lamarck's hypothesis, 86 

 Landscape, a late paleozoic, 234 

 Lang, 136 

 Layering, 32 

 Leaf, free-living, 81 

 Leersia clandestina, 224 



