INDEX 



Extrorse anthers, 851. 

 Exudation, water, 620, 622. 

 Eyes, 674. 



Factors, 488; correlative, 486; determina- 

 tive, 951; external, 486, etc.; formative, 

 952; inherent, 486; internal, 486; re- 

 leasing, 952. 



Facultative dwarfs, 734; epiphytes, 660; 

 hydrophytes, 951; mesophytes, 951; 

 parasites, 762; saprophytes, 762; xero- 

 phytes, 951. 



Fagus, mycorhiza, 791; seedling, 936. 



Fairy rings, 807. 



False Solomon's seal, rhizome, 668. 



Fasciation, 786. 



Fascicular cambium, 684. 



Fats, 521, 913. 



Felt, woolly, 572, 573, 574- 



Ferns, asexual reproduction, 815; climb- 

 ing, 6 S3; foliage, 550; reproduction, 

 636; rhizoids, 516. 



Fescue grass; Festuca, flowers, 835. 



Fiber, bast, 696, 699, 701 ; wood, 697. 



Fibrovascular bundle, 682. 



Ficus, leaf, 636, 638; pollination, 860, 861 ; 

 roots, 502, 514, 515; stoma, 558. 



Fig, pollination, 860, 861 ; strangling, 514, 

 515; wasp, 86 1. 



Figwort, flowers, 853. 



Filament, 825, 826, 835, 851. 



Fir, 648. 



Fission, 591, 806. 



Fixation of nitrogen, 789, 797. 



Fleshy fruits, 924; roots, 500. 



Flexile strength, 702. 



Flies, 842. 



Flower-forming substances, 750, 891. 



Flowers, 599, 731, 768, 825, 826, 829, 833, 

 834, 835, 837, 838, 840, 841, 843, 846, 

 849, 851, 853, 854, 857, 859, 861, 865, 

 869, 870, 871, 872, 873, 874, 875, 893, 

 902, 903; closing, 871, 872, 873; color, 

 845, 847, 898; double, 901, 902; dura- 

 tion, 870; form, 900; plastids, 522; pol- 

 lination, 829, 834, 838; protection, 857, 

 869, 870, 871, 872, 873; single, 902; 

 structure, 827, 828, 875; variation, 898, 

 900. 



Foliage, 539, 544 (see Leaves). 



Foliose lichens, 615, 659, 800. 



Food absorption, 616, 752 ff., 934; accu- 

 mulation, 500, 627, 719, 720, 911, 912, 

 913, 914, 915; bodies, 754; digestion, 

 934; manufacture, 521, 525, 528; sur- 

 plus, 718. 



Foreign pollen, 855. 



Forests, 945; tropical, 656, 946; under- 

 growth, 545, 546, 550. 



Formaldehyde, 525. 



Formative factors, 952. 



Fortuitous variation, 950. 



Fragmentation, 677. 



Fraxinus, twigs, 736. 



Freezing, 587. 



Frigid climates, 889. 



Fruit, 865, 874, 875, 904, 905, 916, 917, 919, 

 920, 921, 924, 925, 929, 938; dehiscence, 

 919; dispersal, 919; dots, 636, 659; pro- 

 tection, 874. 



Fuchsia, leaf teeth, 62 1. 



Fucus, sexual reproduction, 817. 



Function, 487. 



Fungi, asexual reproduction, 811, 812, 813; 

 galls, 784; gardens, 754; parasitic, 762, 

 763, 766; reproductive variation, 878, 

 880; root, 791, 792, 793, 794, 796; 

 saprophytic, 754; sexuality, 883; tuberi- 

 zation, 745, 746; vegetative reproduction, 

 806. 



Funiculus, 905. 



Galls, 576, 780, 781, 782, 783, 784, 785; 



flowers, 86 i ; hairs, 574, 576. 

 Gametangium, 817. 

 Gamete, 816, 817, 826. 

 Gametophyte, 666, 814, 826. 

 Garlic, wild, bulbils, 903. 

 Gas exchanges, 551, 554, 563. 

 Geaster, 812. 

 Geitonogamy, 829, 862. 

 Gemmae; gemmation, 807, 808. 

 Generalized parasites, 765. 

 Generations, alternation of, 814, 822. 

 Geophilous plants, 487. 

 Geotropism, 499, 668, 670. 

 Geranium, hairs, 623. 

 Germination, buds, 936, 937, 938; delayed, 



932; epigaean, 491; hypogaean, 492, 



494; pollen, 832; seeds, 906, 930, 931, 



932, 933, 934, 935, 936. 

 Geum, leaf variation, 602. 

 Gigantism, 734. 

 Ginger, wild, leaf section, 531. 

 Ginseng, dwarf, corm, 676. 

 Girdling, 694. 

 Gland, chalk, 621; epidermal, 617, 622, 



623, 625 ; hair (see epidermal) ; internal, 



623, 624; mucilage, 632; oil, 624; salt, 



613, 621; slime, 561, 623. 

 Glaucous bloom, 568, 570. 

 Gleditsia, 771. 

 Globoid, 914, 915. 

 Glochidia, 818. 

 Gluten layer, 915. 

 Glycerid, 913. 

 Goldenrod, galls, 784. 

 Gonidia, 800, 80 1. 



