354 



Index 



Gulf-weed (Sargassum), *35, 



60 

 Gum (see also " Eucalyptus," 



" Liquidambar," " Nyssa "), 



251, 256, 269 

 Gunnera, 153 



Gymnadenia, G. conopsea, 337 

 Gymnosporangium, 77 

 Gymnosperms, 132, 134, 162 



Halophytes, 202 



Hamamelis, 257 



Hawaiian Islands, flora of, 

 263 



Hawk-moths, 179, 229 



Hawk- weed (Hieracium), 

 315 



Hawthorn, 270 



Heath family, 217, 251 



Hemlock, 244, 269 



Hemp, 283 



Hepaticae (see " Liver- 

 worts ") 



Heredity, 19, 21, 22, 324, 325, 

 326; theories of, 21 



Hermaphrodite (see " Am- 

 phisporangiate ") 



Hetercecism, 77 



Heterospory, 106, 107, 108, 

 122 



Heterostylism, 230 



Hofmeister, Studies on Evo- 

 lution, 312 



Honey guides, 228 



Honeysuckle, 179 



Honeysucker, 179, 234 



Horned Liverworts (see 

 " Anthoceros," " Antho- 

 cerotes ") 



Horsetails (see also " Equi- 

 setum"), 103, 104, 105, no, 

 115, 116, 122, 130, 131, 132 



House-leek (Sempervivum), 



:ucki 



Huckleberry, 47, 213, 262, 



279 

 Humming-birds, 179, 220, 



234 



Hyacinth, 166 



Hybrids, Hj&ridization, 296, 

 336, 337, 338, 339 ; Aberrant, 

 339 ; Natural, 336, 337 



Hydra, 12 



Hydroids, 14, 336 



Ice-plant (Mesembryanthe- 



mum), 203 



Immobility of plants, 14 

 Indian Corn, 37, 282 (see also 



" Maize ") 

 Indian Pipe (Monotropa), 



13, 47, 79, 213, 217 

 Individuality of plants, 304 

 Indo-Malayan flora. 247 

 Infusoria, 27, 51, 325, 329 

 Insects, agents in pollination, 



177, 178, 224, 225, 228 

 Ippmaea, 253 



Iris family, 166, 176, 249 

 Irritability of Protoplasm, 25 

 Island floras, 263 

 Isocarpous flowers, 175 

 Isoetes, 124, 162 



Jamaica, flora of, 244 

 Jasmine (Gelsemium), 270 

 Jeffersonia, 257 

 Jute, 281 



Kauai, flora of, 264 



Kauri Pine (Agathis), 141, 



246 

 Kelp (see also " Brown 



Algae"), 35, 59, 62, 188 

 Krakatau, flora of, 264 



Labiate flowers, 177 

 Lamarckism, 316 

 Laminaria, 58 

 Land plants, origin of, 80, 



82, 83, 84, 192, 193 

 Lantana, 291 

 Larch. 141, 251 

 Laurel, 249, 274 

 Leaf, 31, 35, 36, 37, 47, 100, 



170, 204 

 Leaf-curl of peach, 76 



