260 



INDEX. 



Bilbergia, 136. 



Birches. 71. 



Black moss, 96, 101. 



Bladder wort, 173. 



Blade, 35. 



Bloodroot, 195. 



Bogs, 143. 



Box elder, S4. 



Bramble, 94. 



Branched leaves, 19, 20, 21, 23. 



Buds, 70, 73, 75, 141, 247. 



Bulbs, 73, 75, 81. * 



Bulrush, 142, 148, 185, 186, 207. 



Burdock, 121, 122. 



Bush, 227. 



Bush clover, 43. 



Buttercup, 185. 



Buttresses, 103, 104. 



C 



Cactus deserts, 217, 222, 



Cactus forms, 45, 4<>, 47, 146, 202, 



207, 215, 216, 217, 218, 219, 222. 

 Calyx, 78, 79, SO, 125. 

 Campanula, 19, SO. 

 Caoutchouc, 136. 

 Carbohydrates, 153, 156. 

 Carbon, 153. 



Carbon dioxide, 30, 151, 153. 

 Cardon forests, 231. 

 Carnation, ,;.'. 

 Carnivorous plants, 155, 156, 157. 



173, 189. 

 Carpel. 78, 79, 80, 125. 

 Carrot, 120. 

 Castor-oil bean, 73. 

 Casuarina, 231. 

 Catalpa, 117. 

 Catchfly, 136. 



Cat-tail flag, 142, 148, 185, 186. 

 Cercis, 10, 



Change in temperature, 145. 

 Chaparral, 227. 

 Chlorophyll, 6, 8, 149, 152. 

 Chloroplasts, 39, 107, 152, 205, 208, 



209, 245. 

 Chrysanthemum, 23. 

 Cilia, 109, 111. 

 Claytonia, 196. 

 Cleistogamous, 130. 

 Clematis, 113. 

 Climbing stems, 60, 61, 62, 63, 64, 



102. 

 Clinging roots, 99, 102. 

 Clinia, 209. 

 Cocklebur, 120, 121. 

 Compass plants, 10, 12, 197, 198. 

 Compound leaves, 19, 20, 21, 23. 

 Conducting tissue, 171. 

 Conifer forests, 226, 227, 228, 229, 



230. 

 Conifers, 83, 190, 191, 225, 226. 

 Cork, 247. 

 Corn, 85, 90. 

 Corolla, 78, 79, SO. 

 Cortex, 83, 84, 93, 94, 107, 108. 

 Cottonwood, 70. 

 Cotyledons, 50, 51, 73, 139, 140. 

 Crevice plants, 94, 209. 

 Cuticle, 42, 205. 

 Cycad, 22. 

 Cycloloma, 117. 

 Cypress knees, 95, 96, 183. 

 Cypripedium, 132, 133, 13J h 135, 



136. 

 Cytisus, 206. 



Dandelion, 82, U4, 117. 

 Darlingtonia, 157. 

 Date palm, 86. 

 Dead-nettle, SO. 



