INDEX 



261 



Deciduous forests, 243. 



Deciduous habit, 143, 196, 243, £44. 



Deserts, 221, 222, 223. 



Desiccation, 194. 



Desmodium gyrans, 49. 



Destruction of plants, 148. 



Diatoms, 174. 



Dicotyledons, 35, 83, 116. 



Differentiation, 3. 



Digestion, 154, 156. 



Dionaea, 160, 161. 



Dodder, 106, 107, 157. 



Dog-tooth violet. 144- 



Dragon tree, 15. 



Drainage, 143, 145. 



Drosera, 158, 159. 



Drouth, 193. 



Duckweed, 97, 175. 



Dunes, 145, 201, 209, 211, 212. 



Dwarf growths, 203. 



E 



Easter lily, 14. 



Echeveria, 17. 



Ecological factors, 163. 



Ecology, 4, 149. 



Eel grass, I84. 



Egg, 110, 111. 



Elaters, 118. 



Elatine, 93. 



Elm, 63, 67, 68, 75. 



Embryo, 111, 139. 



Entomophilous. 122, 123. 



Epidermis. 37. 40. 41. 42, 83, 84, 



107, 170, 205, 208, 209. 

 Epilobium, 112, 113, 128, 135. 

 Epiphyte, 209. 

 Equisetum, 111, 203. 

 Erect stems, 62, 65, 66, 67, 68, 69, 



70, 71. 

 Erica, 200. 



Erythronium, 144* 

 Euphorbia, 204. 



Ferns, 55, 56, 85, 88, 100, 111, 113, 



119. 

 Ficus, 8. 



Figwort, 128, 135. 

 Fireweed, 112, 113, 128, 135, 243. 

 Fittonia, 37, 152. 

 Fixed light position, 197. 

 Flag, 126, 133. 

 Floating stems. 59. 

 Floats, 171, 172, 173. 

 Flowers, 76. 78, 140. 

 Foliage forests, 227. 

 Foliage leaves, 6, 28, 139. 

 Forest clearing, 143, 145. 

 Forests, 190, 226. 227, 228, 229. 

 Fruit, 113, 114, 115, 116, 117, 118, 



119, 120. 121, 122. 

 Fucus, 171. 

 Functions, 3. 

 Fungi, 87, 107, 109, 110. 

 Furze, 205. 



G 



Galium, 121. 



Gamete, 110, 111, 112, 113. 



Geophilous habit, 55, 56, 73, 74, 75, 



76, 77, 78, 81, 195, 196, 237. 

 Geotropism, 69, 91, 138. 

 Germination, 111, 138, 139, 140. 

 Gorse, 205. 

 Grape vine, 61. 

 Grass, 187, 197, 216, 236. 

 Gravity, 91. 

 Guard cells, 38. 

 Gymnosperms, 115. 



