574 
Corn, 17, 16*, 17*, 18*, 19*; of 
Crowfoot family, 481, 481*; of 
Elm family, 478, 477*, 478%; 
epigynous, 15, 15*; function, 10; 
gamopetalous, 13, 12*; of Goose- 
foot family, 480, 480*; of Grass, 
17; hypogynous, 16, 15*; incom- 
plete, 13, 11*; of Mallow family, 
14, 14*; of Mustard family, 482, 
483*; of Oats, 20, 20*, 21*; odor, 
10; of Orchids, 26, 25*; of Pars- 
ley family, 488, 488*; parts, 11, 
10*; of Pea family, 484, 485*; 
perigynous, 16, 15*; of Pink 
family, 480, 481*; pistillate, 14; 
polypetalous, 13, 10*; of Rose 
family, 483, 484*; size, 9; some 
particular forms, 16; of Spurge 
family, 486, 486*; staminate, 13; 
unisexual, 13, 12*, 16*, 17*, 18*, 
19*; of Walnut family, 474, 474*; 
of Wheat, 22, 22*; of Willow 
family, 473, 473*. 
Flowering glume, 18, 18* 
Flowering plants, 6, 289; life cycle, 6, 
7*, 469%. 
Fluctuating variations, 525. 
Foods, elaboration into plant struc- 
tures, 95; manufacture by leaves, 
252; nature of, 120; reserve, 277; 
use, 273. 
Foot of sporophyte, 410, 410*. 
Forestry, 1, 4. 
Formation of buds, 208. 
Foxtail, seeds, 76*. 
Framework of plants, 275. 
Free-swimming societies, 505. 
Free water in the soil, 153. 
Fronds, 428, 427*. 
Fructose, 277. 
Fruits of Flowering plants, nature 
and types, 77; aggregate, 80; 
berry type, 77, 77*; blackberry 
type, 79, 79*; definition, 81; 
dissemination, 82-88; Pineapple 
type, 80, 80*; pepo type, 79, 78*; 
pome type, 78, 78*; multiple, 80; 
some other types, 80, 81*, 82*; 
INDEX 
stone type, 77*, 78; strawberry 
type, 79, 79*. 
Fruit sugar, 277. 
Fucales, 321-324. 
Fucoxanthin, 318. 
Function, meaning, 6; of cells, 112; of 
flowers, 10; of leaves, 233, 252; 
ot roots, 136, 137; of seeds, 55, 
56; of stems, 168. 
Fungi, 289, 336; described, 351-404; 
Alga-like, 353-363; basidia, 382- 
403; divisions, 352; Imperfect, 
404; sac, 363-379. 
Fungi Imperfecti, 352. 
Funiculus, 38, 38*. 
Galium A parine, 240*. 
Galton, Francis, 538. 
Gametes, 302; combinations and the 
Mendelian ratio, 556; kinds, 302; 
segregation and purity, 543. 
Gametophyte generation, 411; in 
Angiosperms, 463, 464, 462*, 
464*; in Cycads, 448, 450, 449*; 
in Equisetum, 437, 438*; in 
Ferns, 431, 432*, 433*; in Liver- 
worts, 411, 412*; in Lycopodium, 
440; in Moss, 417, 418*, 421*, 
423*; in Pines, 455, 456, 455*; in 
Selaginella, 442, 443*. 
Gamopetalous flowers, 138, 12*. 
Gamosepalous flowers, 13. 
Garden Pea, flower and pod, 35*; in- 
heritance in, 540, 541, 542*. 
Gasteromyces, 384; described, 389. 
Geaster, 391, 391*. 
Gemmae, 409. 
Gemmae cups, 409, 407*. 
Genera, in classification, 291. 
Genes, 536; active and latent, 537. 
Genetics, 538. 
Genotype, 554. 
Geotropism, 150, 151* 
Geranium, bending toward light, 
243* 
Germination of seeds, 89-98; effect 
of temperature on rate, 90; 
moisture requirement, 91; neces- 
