784 



BOTANY 



Dryas, 663 



Dryobalanops, 647 



Dryopteris, *497, 506, *507, *509, 511 



Dry Rot fungus, Merulius lacrymans 



Dudresna.ya, 425, *426 



Duration of life, 309 



Early wood, 153 



Ebenaceae, 686 



Ecballium, *709 



Eccremocarpus, tendrils. 354 



Echinocactus, 629 



Echinodorus, *720 



Echinops, 713 



Echium, *694 



Ecology, 3 ; of flower, 551 



Ectocarpus, 409, *413 



Edelweiss, Leontopodium 



Egg-cell, 199 



Elaeagnaceae, 673 



Elaeagnus, 673 ; nodules, 261 



Elaels, 740 



Elaphomyces, 442 



Elaphomycetaceae, 442 



Elasticity, 60 



Elder, Sambucus 



Elementary species, 322 



Elettaria, 745 ; seed of, *581 



Elodea, 721 



Elongation, phase of, 284 



Embryo, 202, 575 



Embryo-sac, 539, *57l 



Embryonic rudiments, 282 



Emergences, 56 



Empusa, 435, *436 



Enantioblastae, 730 



Encephalartos, 589, 606 



Enchanter's Nightshade, Oircaea 



Endive, Cichorium endivia 



Endocarp, 583 



Endocarpon, 471 



Endodermis, 57, 94, 135 



Endophyllum, 459, *460 



Endosperm, 565, 580 ; development of, 



574 ; nucleus, 574 

 Endospores, 195 

 Endothecium, 481, 546 

 Energy, liberation of, 273 

 Enteromorpha, 402, *403 

 Entomophilous plants, 553 

 Entomophily, 556 

 Entomophthorineae, 435 

 Enzymes, 264 



Ephedra, *602, *603 ; prothallia, 569 

 Epidermal system, 49 

 Epidermis, *49, 92 

 Epigeal germination, 589 

 Epigynous flower, *549, 550 

 Epilobium, 674 

 Epipactis, 746 ; cell of, *25 

 Epiphyllum, 629 



Epiphytes, 183, 228 



Epipogon, 191, 256, 746 



Epithema, 113 



Equisetaceae, 502, 51 7 



Equisetinae, 517 



Equisetum, *86, *87, 95, 517, *518, *519, 



*520, 522 ; germination of the spores 



of, 290 



Ergot, 443, 444 

 Ergot, Claviceps purpurea 

 Erica, 686 

 Ericaceae, 684 

 Ericinae, 684 

 Erigeron, 716 

 Eriobotrya, 661 

 Eriophorum, 730, *731 

 Erodium, fruit of, 334 

 Erophila, 646 

 Erysibaceae, 438, 440 

 Erysibe, 440, 441 

 Erysiphe, *27 

 Erythraea, 689 

 Erythroxylaceae, 652 

 Erythroxylon, *652 

 Escholtzia, 642 

 Ethereal oils, 30, 268 

 Etiolation, 289 

 Eucalyptus, 235, 675, 676 

 Eucheuma, 428 

 Eudorina, 399, 400 

 Eugenia, 675, *676 

 Euglena, *380, 381 

 Euglenineae, 380 

 Eumycetes, 436 



Euphorbia, *174, *623, *624, 625, 626 

 Euphorbia Cyparissias, 294 

 Euphorbiaceae, 623 

 Euphrasia, 191, 259, 704 

 Eurotium, 441 

 Euryale, 632 

 Eusporangiatae, 503 

 Everlasting flowers, Helichrysum 

 Everlasting Pea, Lathyrus 

 Evolution, 2 



Excretion of water, causes of, 234 

 Exine, 541 

 Exoasceae, 449 

 Exoascus, 449 

 Exobasidiineae, 461 

 Exobasidium, *460, 461 

 Exocarp, 583 

 Exodermis, 135 

 Exogonium, *693 

 Exospores, 195 

 Exothecium, 546 

 External factors, purposiveness of the 



reactions to, 295 

 External segmentation, 71 

 Extrorse, 546 

 Exudation, 232, *233 

 Eye-spots, 20 



