INDEX 
629 
Fossombronia tuberifera, 217 
Fraxinus, 28 
Fritillaria imperialis, 44 
Fronds, 150 
Fruit, essentials of, 451 
Fucus, 352 
Function, 7 
Fungi, timber-destroying, 303 
Fungus-farms, 325 
Gaertneria, 488 
Galactase, 317 
Gall-mite, 292 
Gametes, 180 
theory of purity of, 555 
Gametophyte, 181 
decline of, 365 
Gamopetalae, 456 
Gangrene, 316 
Gasteria nigricans, 38 
Gaussia, 134 
Gaylussacia, 473 
Gemma, 208, 216 
Gene, 558, 559 
Genotype, 561 
Generations, alternation of , 182, 575 
Geography, plant, 5 
Geological time, table of, 584 
Geotropism, 128 
Geranium, 339 
house, 139 
Germination, 166 
Germ-tube, 166 
GinkgO; 610 
Gleditsia, 468 
Gleichenia circinata, 157 
Glumes, 495 
Golden rod, 340 
Goodsell, John W., 310 
Gooseberries, 301 
Grafting, 333 
Grafting, various methods of, 334 
Grain smut, 297 
Gramineae, 492 
Grape, downy mildew of, 313 
Gravity, relation of roots and 
stems to, 126 
Grew, Nehemiah, 14 
Groups of plants, 366 
the great, 621 
Growing points, 212 
Growth, 113 
and nourishment, 123 
differential, 115 
intercalary, 218 
permanent and temporary, 121 
Guard-cells, 33, 35 
Gunnera manicata, 341 
Gymnosperms, 408, 412 
ancestors of, 609 
Gymnospermy, 408 
Gyncecium, 436 
H 
Hackberry, 292 
Haustoria, 402 
Head, 483 
Hedge mustard, 190 
Hellriegel, 318 
Henbane, 481 
Hepaticae, 209, 210 
Heracleum lanatum, 472 
Hercules club, 27 
Heredity, 541 
experimental study of, 549 
Johannsen's conception of, 560 
vs. inheritance, 544 
Heterogamy, 352 
Heterospory, 356, 382 
Hickory, 336 
Hirase", 404 
Histology, 4 
Hofmeister, 411 
