INDEX 
Collenchyma, 21, 52 
Commensalism, 195 
Conducting system, 21 
Conjugation, 425 
Constructive processes, 
258; katabolic, 260 
Contact, stimulus of, 383 
Convolvulus, 387 
Copper, 129, 175 
Cork, 20, 49 
Cortex, 226 
Crassulacee, 292, 296 
Crarto on photosynthesis, 154 
Crystalloids, 237 
Crystals of protein, 237 
Cucumis, 252 
Cucurbita, 87 
Cupulifere, 197 
Curvature (of stimulated roots), 385 
Cuscuta, 203, 342, 388 
Cuticle, 48; influence of on tran- 
spiration, 20 
Cuticularisation, 20, 48 
Cutin, 49, 50 
Cutleria, 423 
Cycas (antherozoids of), 487, 446 
Cyclamen (apheliotropism of pe- 
duncles of), 377 
Cystocarps, 427 
Cystoliths, 51, 273 
Cytase, 248, 251 
Cytoplasm, 5 
Czaprx, 400 
anabolic, 
Darwin, on localisation of sensitive- 
ness, 378, 382; on tendrils, 385 ; 
on twining stems, 387 ; on Drosera, 
405 
Darwin, F., and Pertrz on induced 
rhythm, 394 
Day and night, influence of alterna- 
tion of, 371 
Delphinium, 439 
Descending sap, 217 
Desmids, 379 
Desmodium gyrans, 354, 371 
Diageotropism, 380 
Diaheliotropism, 377 
Diastase, 248; function of, 249; in 
pollen, 444 
Diaster stage in mitosis, 415 
Diatoms, 347 
Dichogamy, 441 
Dichnism, 442 
Digestion, 123; by Nepenthes, 190, 
247; by Drosophyllum, 191; by 
Pinguicula, 191; by Dionea, 
453 
194, 247; by Drosera, 198, 247; 
by Bacteria, 194; of reserve ma- 
terials, 242 ; by Fungi, 257 
Dimorphism, 443 
Dicecious plants, 442 
Dionea, 185, 191, 193, 247, 348, 
369, 383, 390, 398, 401, 404, 408 
Dodder, see Cuscuta 
Dorsiventral structures, 314 
Double fertilisation, 437 
Drosera, 185, 192, 247, 348, 383, 
390, 393, 404, 405, 406 
Drosophyllum, 191 
Duramen, 72 
Eictocarpus, 423 
Ectoplasm, 5 
Egg apparatus, 432 
Elaioplasts, 240, 265 
Ellodea, 6, 349 
Embryo, nutrition of, 119 
Embryo-sac, 431 
Emulsin, 248, 253, 
Endodermis, 69 
Endo-skeleton, 29 
Endosperm, 481, 434 
Energy, expenditure of, in photosyn- 
thesis, 156, 276; expenditure of, 
in transpiration, 275, 281; in 
constructive processes, 276; in 
growth, 276; in movement, 277; 
in production of heat 277, of 
light 279; sources of, 279, 821; 
potential and kinetic forms of, 
281; liberation of, 281; distri- 
bution of, 282 
ENGELMANN, on evolution of oxygen 
in different parts of the spectrum, 
157 ; on purple bacteria, 159 
Entomophilous flowers, 439 
Environment, nature of, 329 
Enzymes, 138, 244; preparation of, 
256; secretion of, 261; in pollen, 
444 
Ephedra, 50 
Epidermis, characters of, 48 
Epinasty, 314 
Epiphytes, 195, 339 
Epistrophe, 363 
Equatorial plate, 414 
Hquisetacee, 50 
Equisetum, sclerenchyma of, 27, 29; 
air-spaces in, 108; chloroplasts 
in, 146 
Erepsin, 248 
Erianthus, 29 
ERLENMEYER on photosynthesis, 154 
Erythrophyll, 144 
