INDEX 



801 



Drought and leaf development, 82; and 

 spinescence, 83; physiological, 205, 

 210 



Drugs, 174 



Drupe, 363, 365 



Duckweeds, 15 



Dust storm, 794 



Dwarf branch, 19; male, 618 



Dyad, 372 



Dyes, natural, 172 



Economic aspects, of algae, 609; of bac- 

 teria, 523-525, 582; of ferns, 659; of 

 flowers, 369; of fruits, 369; of fungi, 

 559, 567-572; of leaves, 93; of liver- 

 worts, 645; (jf mosses, 645; of seed 

 plants, 693-717; of seeds, 369 



Ectocarpus, 629, 631, 636 



Ectogony, 381 



Egg," 374, 465, 466. 618, 647, 666; fer- 

 tilized, 376; parthenogenetic, 380 



Elaioplasts, 65 



Elaters, 654 



Electrons, 96 



Elements, chemical, 100, 330 



Elm, 679; family, 705 



Elodea, 1 1 1 



Embryo, 10, 11, 295, 367, 376, 378, 665, 

 689; development of, 377, 686; sac, 

 374, 380; to seedling, 388 



Endodermis, 265, 280, 304 



Endogenous origin, 304 



Endosperm. 367, 376, 378, 380; inheri- 

 tance, 469, 471, 472; nucleus, 376 



Energy, bound, 98, 109, 150, 152, 155; 

 free, 98, 109, 152, 155; radiant, 115; 

 sources of, 1, 115, 150, 186, 195, 199, 

 212; transformations of, 110, 183-186 



Englemann spruce, 786 



Environment and leaf develojMuent, 76- 

 83; and pigments, 29-31; and muta- 

 tions, 482; and photosynthesis, 115- 

 118, 125; and respiration, 160-165; 

 fresh water, 590; land, 589; salt water, 

 598; under-water, 587-605 



Enzymes, 106, 123, 129, 139, 155, 156, 

 169, 174, 175. 532 



Eocene period, 723 

 Ephedra, 680 



Epidermis, 70, 71, 120, 265, 280, 303; 

 and stomates, 74 



Epiphytes, 297, 299, 300, 507, 508 



Equiseluni, 675 



Equisetums, 673-676, 727 



Eras, geologic, 723 



Ereptase, 175 



Ergosterol, 175 



Ergot, 569 



Ericaceae, 713 



Erosion, 46, 47, 48, 405, 406, 792, 793, 



794 

 Essential oils, 173 

 Ei(glena, 607, 615 

 Eiiglenophyceae, 608 

 Evaporation, 80; lifting power of. 227 

 Evergreen habit. 32 

 Evolution and plant origins, 495, 738 

 Exogenous origin, 304 



F, generation, 442, 460 

 F. generation. 442, 460 

 F;, generation. 442. 462 

 Factors, climatic {sec Climate): heredi- 

 tary, 462-466; prehistoric, 742; soil 

 (see Soil) 

 Fagaceae, 704 

 Fairy rings, 557 

 Fascicles, 19 



Fats, 103, 106, 138, 148. 175; accumula- 

 tion of. HO; digestion of, 139-110; 

 synthesis of, 138-141 

 Fatty acids, 138, 168 

 Fermentation, 155-157, 527 

 F"ern, adder's-tongue, 745; Boston, 136. 

 484; cinnamon, 660; grape, 665; leaf, 

 76, 212; polypody. 8; royal, 665; seed, 

 729; staghorn, 658; sword, 484; tree. 

 661; walking. 663 

 Ferns. 5, 8, 15, 657-668; and chromo- 

 somes, 665; aquatic. 667; fossil, 659: 

 reproduction of, 662-666 

 Fertilization, 376, 665, 684, 689; cross. 



440; self, 442 

 Fertilizers, 44, 610 

 Fescue grasses, 43 

 Fibers, pericycle, 264, 281; phloem, 264, 



283 

 Fife. David. 435 

 Fig fruit, 363; strangling, 299 

 Filament, 354. 616, 619 

 Fireblight, 568, 582 X\> 



Fishes, 601, 604, 610 /Cr><:ros7>s. < 





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LIBRARY 



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