Index 



353 



Evolution, theories of, 311; 



of sex, 66, 3*9, 329 

 Exoascus, 76 

 Experimental morphology, 



48, 301, 342, 343 



Factors in Evolution, 19 



Ferments, 71, 212, 219 



Ferns, 79, 83, 87, 97, 103, 

 116, 120, 122, 131, 208, 252; 

 fossil, 116 



Fertilization, 67, 88, 128, 

 156 



Fibro-vascular system of tis- 

 sues, 100 



Figwort family, 217 



Field Horsetail, 118 



Filamentous Algae, 31 



P"ilmy Ferns, 117 



Fir, 123, 246, 250, 269, 274 



Fission plants (Schizophyta), 

 50 



Flagellata, 50, 51, 54, 63, 66, 

 303 



Flax, 175, 281, 282, 283, 284 



Floral envelopes, 155 



Flower, 123, 137, 148, 151, 

 152, 154, 165, 170, 184 



Flowering plants (see " Seed- 

 plant," " Spermatophyte") 



Flowering Dogwood, 258 



Fluctuating variations, 23, 

 305, 306, 319 



Forage plants, 284 



Fossil record, 46, 236 



Foxglove (Digitalis), 176, 

 177, 227, 251, 337 



Fox-grape, 258 



Fouquiera, 200 



Fresh-water Algae, 64, 81, 87 ; 

 Red, 64 



Fritillaria, 274 



Fruits, 148, 158, 180, 286; edi- 

 ble, 286 



Fucaceae, 191 



Fuchsia, 176, 234 



Fucus, 62, *66, 189, 331; F, 

 vesiculosus, 189 



Fungi, 13, 70, 71, 208, 211, 

 212, 214, 224, 333 



Gametes, 54, 67, 88, 223 

 Gametophyte, 88, 89, 98, 99, 



106, 121, 133, 152, 153, 194; 



Angiosperms, 152; Cycas, 



i'33; Ferns, 98, 99; Lyco- 



podium, 106 

 Gaultheria, 262 

 Gedeh, flora of, 261 

 Gelsemium, 270 

 Gemmules, 7, 346 

 Gentian, 251, 261 

 Geranium, 175, 230, 242 

 Gerardia, 217 

 Germ-plasm, 21, 23, 303, 330, 



346 



Gesneraceae, 337 

 Giant Cactus, 200 

 Giant Kelp, 59, 67, 80, 190 

 Gilia, 275 



Ginger family, 245, 253 

 Ginkgo, Ginkgoales, no, in, 



126, 131, 132, 138, 145, 



241 



Glacial epoch, 249, 255 

 Gladiolus, *i67 

 Glossopteris, 240 

 Gnaphalium, 262 

 Gnetales, 133, 143, 146, 152 

 Gnetum, 143, 144, 152, 154 

 Goldenrod, 251 

 Gooseberry, 297, 298 

 Gordonia, 262 

 Gorse, 291 

 Graft-hybrids, 341 

 Grape, 270, 297, 298 

 Grasses, 220, 226, 271, 284 

 Gravity, effects of, 43 

 Green Algae, 57, 66, 69, 70, 



80, 91, 120, 190 

 Greenland Sandwort, 263 

 Grevillea, 247 

 Ground Pine (Lycopodium), 



104 



Great Plains, flora of, 270 

 Guava, 288 



