INDEX 
Dicotyledonous stem, minute struc- 
ture of, 86-98%. 
Dicotyledonous stem, rise of water 
in, 107, 108, *109. 
Dimorphous flowers, *366, 367. 
Dicecious, 200. 
Discharge of pollen, *211. 
Disk-flowers, 188, *189. 
Dispersal of seeds, 376-386*. 
Dispersal of seed-plants, 373-376. 
Distinct, 201. 
Distribution of material in mono- 
cotyledonous stems, *84, 85. 
Dock fruit, study of, 219, 220. 
Dodder, 39, *40, 41. 
Dormant buds, 127, 128. 
Double flowers, 209. 
Drip-leaves, *314. 
Drosera, *341, *342, 343. 
Drought, endurance of, 162, 165. 
Drought-plants, 313-317*. 
Dry fruits, 224. 
Duckweed, 314. 
Duct, *92. 
Earliest plants, 298. 
Ecology, 2, 307. 
Egg, osmosis in, 50, *51. 
Egg-cell, #249, #251, 280, *284, 285. 
Elaters, 294. 
Elliptical, *131. 
Elm, *67. 
Elm bud, *125. 
Elm fruit, *223. 
Elm leaf, 130, 133. 
Elm, twig of, *125. 
Emarginate, *131. 
Embryo, 6, 17. 
Embryo sac, *215. 
Endosperm, *15, *16, 17, 19. 
Energy, source of, in plants, 173. 
401 
Enslaved plarts, 338, *339. 
Epidermis, uses of, 156, *157. 
Epidermis of root, *42, *44, 
Epigynous, 204, *205. 
Epipetalous, 204, *205. 
Epiphytes, 322, *323. 
Equisetales, 232. 
Equisetum, study of, 292-295*. 
Essential organs, *197. 
Euphorbia splendens, *350. 
Evergreen, 175. 
Evolutionary history of plants, 
298-305. 
Excretion of water, 172, 173. 
Excurrent trunk, *66. 
Existence, struggle for, 387-393. 
Exogenous, 96. 
Explosive fruits, 377. 
Fall of horse-chestnut leaf, *137. 
Fall of the leaf, 175, 176. 
Family, 230. 
Family, subdivisions of, 231. 
Fascicled roots, *41. 
Fermentation, 269. 
Fern, study of, 286-—289*. 
Fern-plants, 295-297. 
Ferns, 290, 291. 
Fertilization, *214, *215, 216. 
Fibrous roots, *41. 
Fibro-vascular bundles, *83. 
Ficus elastica, leaf of, *154. 
Ficus religiosa, drip-leaf of, *314. 
Fig, transpiration in, 160, *161, 
162. 
Filament, 201, 202, #203. 
Filicales, 232. 
Fir wood, *93. 
Fission, *242. 
Fission-plants, 232. 
Fittest, survival of, 394, 395. 
