318 



BRITISH PLANTS 



Fluviatile deposits, 80 



Fly-oatchers, 132 ; -traps, 175, 177 



Fodder, 21 ; -plants, 150 



Follicle, 188, *189 



Food, 24, 79, 145 ; -products, culti- 

 vation of, in British Isles, 18 ; 

 -reserves, 62, 145, 161 ; -stufis, 5 



Fool's-parsley, 60, 216. See ^thusa 

 cynapium 



Forests : destruction of, 13, 22 ; 

 maintenance of, 11, 17. See 

 Woodland, Woods, Coniferous, 

 Deciduous, Dicotyledonous, Ever- 

 green, and Rain-forests 



Forget-me-not, 217 ; early (see 

 Myosotis coUina) 



Form : in relation, to function, 103 ; 

 to environment, 105 



Formations, 225, 226, 227 



Foxglove, 60, 108, 152; calcifuge, 

 89; infi., 179; poUination, 173, 

 174. See Digitalis 



Fox-tail grass (Alopecurus), 216 



Freaks, origin of, 153 



Frogbit. See Bydrocharis 



Frost, 81 



Fruits : aohenial, 186 ; capsular, 187 ; 

 classification of, 184, 194 ; culti- 

 vated, 148 ; propagation of, 149, 

 154 ; sterility of seeds in, 149 ; 

 defensive equipment, 135, 136, 

 *137 ; development of, 183 ; dis- 

 persal of, 195, by animals, 196, 

 birds, 196, 198, water, 197, wind, 

 196, 198 ; dry, 186 ; explosive, 

 196 ; false, 185, 193 ; feathered, 

 195 ; poisonous, 149 ; storage of 

 food in, 148 ; succulent, 136, 148, 

 192 ; true, 185 ; winged, 195 



Fumaria officinalis, tendrils, 120 



Fumitory, 216. See Fumaria 



Fungi, disease-producing, 61, 135, 

 138 ; parasitic, 125 ; saprophytic, 

 123 ; soil-, 96, 133 



Oalium, 60 ; honey, 172 ; Aparine 

 (cleavers), climbing habit, 116; 

 fr., 197 



Garden-annuals, 108 



Geitonogamy, tl66 



Gentian, 152 



Genus, 218 



Geophilous plants, t82 



Geophytes, 62, 74, 113, 115 



Geranium: fr., 190; honey, 173; 

 nectaries, *169 ; seeds, 196 ; pros- 

 mtum, 221;pusiUum, 216; Robert- 



ianum, 60 ; sanguineum, 221 ; 

 garden-, origin of vars., 154 



Germination of seeds, 137, 138 



Oeum, fr., * 197 



Ginger, 150, 151 



Glacial Kpoch, 209, 210. 212 



Glaciers, 81 



Gladiolus, 63 



Glasswort. See Salicornia 



Gloriosa superba, tendrils, 119 



Glossopteris, 339 



Glyceria fluitans, 51 



Goat's-beard, 217. See Tragapogon 



Gooseberry, 215 ; fr., *193, 195 



Goosegrass. See Galium Aparine 



Gorse : fl., 169 ; flowering of, 57 ; 

 honey, 171 ; seeds, 196 ; thorns, 

 44, 139, 140. See Vlex 



Goutweed, 216, 218. See JEgopo- 

 dium 



Granite, 80 



Grape: fr., 136, 184, 193, 195; 

 source of alcohol, 151 



Grasses : effect of shade on, 72 ; fls., 

 177 ; fr., 186 ; hay-producing, 

 262 ; hemi-parasites on, 126 ; infl., 

 179, 180 ; pollination, 167 



Grass-heath, 230, 249, 250; -land, 

 15, 16, 17, 19, 23, 261 ; -wrack 

 (see Zostera) ; of Parnassus, mock- 

 glands, 171 



Ground-ivy : creeping stems of, 156 ; 

 leaf-mosaic, 68 



Groundsel, 108. See Senecio vul- 



Ground-water, 28, 85, 86 



Growth : classification by mode of, 



114; influenced by light, 7L 



stunted, 36 

 Guano, 97 



Guard-cells, *26, *27 

 Guilds, 122 

 Gulf Stream, 13 

 Gums, 142 

 Gymnosperms : pollination, 163 



seeds, 183 



Bahenaria intacta, 213 



Habitat : biological, 223 ; closed, 16 ; 



open, 16 

 Hairs, 39, 61, 136 

 Halophytes, fSS, 278, 279 

 Haptera, 235 

 Hart's-tongue, 217 

 Haustoria of parasites, 125, *129 

 Haw, 149, 184, 193 

 Hawkmoth, 170, 171, 174 



