306 
Fluviatile deposits, 80 
Fly-catchers, 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 ; -stuffs, 5 
Fool’s-parsley, 60,216. See H#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 
Myosotis collina) 
Form: in relation to function, 103 ; 
to environment, 105 
Formations, 225, 226, 227 
Foxglove, 60, 108, 152; calcifuge, 
89; infl., 179; pollination, 173, 
174. See Digitalis 
Fox-tail grass (Alopecurus), 216 
Freaks, origin of, 153 
Frogbit. See Hydrocharis 
Frost, 81 
Fruits : achenial, 186 ; capsular, 187 ; 
classification of, 184, 194; culti- 
vated, 148; propagation of, 149, 
(see 
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 
Galium, 60; honey, 172; Aparine 
(cleavers), climbing habit, 116; 
it on 
Garden-annuals, 108 
Geitonogamy, +166 
Gentian, 152 
Genus, 218 
Geophilous plants, +82 
Geophytes, 62, 74, 113, 115 
Geranium: fr., 190; honey, 173; 
nectaries, *169; seeds, 196; pros- 
tratum, 221; pusillum, 216; Robert- 
BRITISH PLANTS 
ianum, 60; sanguineum, 221; 
garden-, origin of vars., 154 
Germination of seeds, 137, 138 
| Geum, fr., * 197 
Ginger, 150, 151 
Glacial Epoch, 209, 210, 212 
Glaciers, 81 
Gladiolus, 63 
Glasswort. See Salicornia 
Gloriosa superba, tendrils, 119 
Gluten, 148 
Glyceria flwitans, 51 
Goat’s-beard, 217. See Tragapogon 
Gooseberry, 215 ; fr., *193, 195 
Goosegrass. See Galiwm Aparine 
Gorse: fl., 169; flowering of, 57; 
honey, 171; seeds, 196; thorns, 
44, 139, 140. See Ulex 
| Goutweed, 216, 218. See Agopo- 
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. 
garis 
Ground-water, 28, 85, 86 
Growth: classification by mode of, 
114; influenced by light, 71, 
stunted, 36 
Guano, 97 
See Senecio vul- 
| Guard-cells, *26, *27 
Guilds, 122 
Gulf Stream, 13 
Gums, 142 
Gymnosperms : 
seeds, 183 
pollination, 163; 
Habenaria intacta, 213 
Habitat : biological, 223 ; closed, 16; 
open, 16 
Hairs, 39, 61, 136 
Halophytes, +88, 278, 279 
Haptera, 235 
Hart’s-tongue, 217 
Haustoria of parasites, 125, *129 
Haw, 149, 184, 193 
Hawkmoth, 170, 171, 174 
