INDEX 



729 



Dryobalanops, 638 

 Dryopkyttu&i, 689 



Duckweed, Lemna 

 biii/i-csnaya, 376, *377 

 Duramen, 133 

 Duration of life, 261, 262 



Ebenaceae, 646 



EcbaUium, *678 



Echinocactiis, 630 



Echinodmrus, *523 



Echinops, 681 



Ei'lihtm, *657, 658 



Ectocarpus, *369 



Edelweiss, Leontopodium 



Egg, 91 ; -apparatus, 514 



Eir'/ihornia, 196 



Elaeagnaceae, 631 



Elaeagnus, 631 ; root tubercles, 232 



Elaeis, 533 



Elaphomyces, 397 



Elasticity of plants, 178 



Elateriura, 678 



Elder, Sambucus 



Electrotropisin, 286 



Elettaria, *474, 547 



/;//-, 524 



Elongation, phase of, 253 



Embryo, 473, 516, *518 ; of fern, 439 



Embryology, 154 



Embryonic phase of growth, 248 



Embryo sac, 472, *514 ; nuclear division 



in, 90 



Emergences, 50, 105, 107 

 K^imsa, *385, 386 

 Enantioblastae, 536 

 Endocarp, 519 

 Endocarpon, 418 

 Endodermis, 117, *120 

 Endogenous, 20 

 Eiiilfiphyllum, *400 

 Endosperm, 473, 516 ; nucleus, 516 

 Endothecium, 503 



Energy, respiration as a source of, 242 

 Enteromorpha, *357 

 Entire leaves, 33 

 Eutomophilous plants, 307 

 Entomophthorineae, 385 

 Enzymes, 223 

 E/ilo-iIra, *498, *499 ; free cell formation, 



91 



H/iln'inerum, *434 

 Epiblem, 100 

 Epidermis, 100, *100, 160 

 Epigeal germination, 323 

 Epigynous flowers, *505, 506 

 Epilolrium, 632 

 Epinasty, 272 



Epipactis, 549 ; cell division, *88 

 Epiphyllum, 631 

 Epiphytes, aerial roots, 48 



Epipogon, 549 



Epithema, 123 



Equisetaceae, apical cell, 156 ; central 

 cylinder, 118 ; epidermis, 100 ; sili- 

 con, 71, 191 ; spores, 271 



Equisetinae, 455 ; fossil, 466 



Equisetum, *455, *456, *457, 458, 466 ; 

 vegetative cone, *156, *157 



Ergot, Olaviceps 



Erica, 645 



Ericaceae, 645 



Ericeae, 645 



Ericinae, 645 



Erigeron, 686 



Eriobotrya, 595 



Eriophorum, *525 



Erodium, 610 ; fruit, *27l 



Emi.ni, 609 



Eryngium, 640 



Erysiphe, ascospore formation, *90 



Erysipheae, 389, 390 



Erythraea, 651, *652 



Erythroxylaceae, 611 



Erythroxylon, *611 



Escholtzia, 586 



Espdetia, 687 



Ethereal oils, 79, 98, 226 



Etiolation, *259 



Eucalypti gummi, 634 



Eucalyptus, 632, 634, 688; heterophylly,35 



Eucheuma, 378 



Eudorina, 355 



Eugenia, 633, *634 



Euglena, *339 



Eumycetes, 386 



Euonymus, *620 ; vegetative cone, *30 



Eupatorieae, 682 



Eupatorium, 682 



Euphorbia, 27, *615, *616, *617 ; succu- 

 lent stems, *212 



Euphorbiaceae, 615 ; caoutchouc, 78 ; 

 latex cells, 72 



Euphrasia, 231, 666 ; haustoria, 49 



Euryale, 573 



Eusporangiatae, 443 



Everlasting flowers, Hdichrysum 



Evolution, theory of, 1, 175 



Exine, 475 



Exoasci, 398 



Exoascus, 398 



Exobasidium, 409 



Exocarp, 519 



Exodermis, 120 



Exogenous, 20 



Exogonium, *656, 657 



Exothecium, 503 



Exotropism, 281, *282 



External influences, irritability to, 273 ; 

 upon growth, 257 



Extrorse anthers, 503 



Exudation of water, *209 



