GENERAL INDEX 
Economie botany, 150 
Edaphie factors, 8, 84 
Eel-worm, 135 
Egg-cell, 162 
Elder : berries, 149 ; bud-protection, 
61; bud-scales, 61 
Elementary species, 205, 221 
Elm: bud-scales, 61; pollination, 
167 ; seed, 154 ; suckers, *155 
Elodea, 56, 215, 234 
Embryo-sae, *163 
Embryo, storage of food in, 146 
Empetrum, 43 
Enchanter’s-nightshade, 
Circea 
Endemic, 208 
Endoearp, 192 
Endosperm, *146, *147 
Enemies of plants, 135 
Energy, 7 ; solar, 4, 65 
Engler, 219 
Entomophilous flowers, 167 ; classi- 
fication of, 172 
Environment : adaptation to, 3, 105, 
203 ; factors of, 4 
Epicarp, 192 
Epidermis, *26, *27 
Epiphytes, 121; seeds of, 122; of 
woods, 266 ; xerophytic nature of, 
121 
Epipogum aphyllum, saprophyte, 
124 
197. See 
Erica, 39, leaf, 43; stomata, 40, | 
ciliaris, 213, cinerea, *41; 
Mackayi, 213 ; mediterranea, 213 ; 
Tetralix, *43, pollination, 173 ; 
vagans, 213. See Heath 
Erica Tetralix-moor, 231, 250, 252 
Ericoid type of leaf, *43 
Erigeron canadense, 216 
Eriocaulon. 214 
Eriophorum. See Cotton-grass 
Eriophorum (cotton-grass) moor, 
231, 250, 251, 253, 254, 255 
Erodium: dispersal of fr., 195; 
structure of fr., 190, *191 
Bryngium maritimum, 59 
Estuarine marshes, 231 
Eucalyptus leaves, 46 
EBuphorbia, 105 ; latex, 142 ; hiberna, | 
213 ; Peplis, 57 | 
Euphrasia, 220; parasitic nature, 
126 
Europe, climate and veg. of, 21 
Evaporation, 34, 76 
Evening-primrose: honey, 173; infl., 
180 ; time of opening, 174 
305 
Evergreen coniferous woods, 22, 265, 
273 
Evergreen dicotyledonous woods, 16, 
3 
Evergreen oak, 23, 212 ; perennials, 
109; plants, 10, 16, 29, 30, 31; 
rain-forests, 23 ; xerophytes, 39 
Everlasting pea. See Lathyrus latie 
folia 
Evolution, 201; theory, 202; of 
aquatics, 55 ; flowers, 168 ; thorns, 
139 
Eyebright, 220. See Huphrasia 
False fruits, 193 
False oat, swollen stem, 111, *113 
Farming in British Isles, 19 
Fats and oils, 5 ; storage in seeds, 147 
Felspar, 81 
Fennel, nectaries, *170 
Ferns, 62 ; Filmy, 29 ; Killarney, 29, 
214 
Fertilization, 164 
Festuca - Agrostis - Anthoxanthum 
association, 250 
Festuca ovina, viviparous, 160 
Ficus. See Fig 
Fig, 212; fr., 193, *194; symbiosis 
with insects, 133 
Figwort : fls., 177 ; pollination, 174. 
See Scrophularia 
Filament, 162 
Fir, 22 ; resin of, 142 
Flax, oil, 148 
Fleabane, 218 
Fleshy roots, 150 ; of xerophytes, 41 
Flies, visiting fls., 172, 173, 174 
Floating leaves, 51; manna-grass 
(see Glyceria fluitans) 
Flora, Alpine, 210; discontinuous, 
211; of Great Britain, 209 ; Irish, 
214; Lusitanian, 211; Pre-glacial, 
212 
Floras, list of, 232 
Flour, 148 
Flowers: anemophilous, 166 bee-, 
174; butterfly-, 174; cleisto- 
gamous, 7165; dimorphic, 177; 
entomophilous, 167 ; honey-, 169 ; 
and insects, 167, 178 ; moth-, 174; 
pollen-, 168; protandrous, 177 ; 
protogynous, 177 ; self-pollinated, 
164, 165; sleep-movements in, 
71; structure of, 162, *163 ; time 
of opening, 174; trap-, 175; tri- 
morphic, 177; unisexual, 176; 
wasp-, 174 ; water-pollinated, 166 
20 
