INDEX 



421 



embryology of, 35-5 2 ( fi g-) ; 

 female cones of, 336 (fig.), 337 

 (fig.). 345-7 ( fi g s -). 352 (fig.) ; 

 fertilisation of, 349, 350, 353 ; 

 habit of, 334-6 (figs.) ; "leaf 

 of, 161, 335-7. 341-4 (ngs.); 

 male cones of, 336 (fig.), 

 344-6 (figs.), 347 (fig.) ; 

 ovules of, 333, 348, 349 

 (fig.) ; pollen sacs (micro- 

 sporangia) of, 345, 347 (fig.) ; 

 pollination of, 348 ; root of, 

 70, 341 ; seedlings of, 337, 

 338 (fig.) ; seeds of, 351, 352 

 (fig.); stem of, 117, 335, 338- 

 41 (figs.) ; wood of, 37 (fig.), 



127, 34. 34i (fig-)- 

 Coniine, 6i. 

 Conium maculatum, 61. 

 Conjugates, 208 ; reproduction of, 



216, 226-8 (fig.) ; structure 



of, 208-10 (fig.). 

 Conjugation, 226, 227 (fig.), 237 



(fig,). 

 Connective, 359 (fig.), 360 (fig.), 



362. 

 Contractile vacuoles, 181, 182 (fig.), 



187 (fig.), 193, 213. 

 Conversion of sewage, 265. 

 Convolvulus septum, 153. 

 Copper Beech,' 382. 

 Copra, 49. 

 Coprinus, 245. 

 Coral-Fungus (Clavarid), 250, 251 



(fig.). 



Coral reefs and Algae, 204. 

 Coral-spot disease (Nectria), 253. 

 Corallina, 204, 205 (fig.). 

 Corchorus, 34. 

 Cordaitales, 407. 

 Cordyceps, 239, 255. 

 Cork, 135-42 (figs.) ; and leaf-fall, 



141, 142 (fig.) ; and wounds, 



142 ; commercial sources of, 



140 ; formation of, 131 (fig.), 

 1 135-8 (figs.) ; functions of, 



137, 138 ; properties of, 137, 



138. 

 Cork-cambium (phellogen), 135-42 



(figs.) ; and aerenchyma, 175 ; 



of Conifers, 338, 339 (fig.). 

 Cork Elm, 141 ; Maple, 141 ; 



Oak (Quercus suber), 140. 

 Cork- wings, 141. 

 Corms, 355. 

 Corn Cockle (Agrostemma githago), 



no, 370. 

 Cornus sanguined, galls of, 143 (fig.). 



Corolla, 354, 373. 



Cortex, 65, 76 ; of aquatics, 171 

 (fig.), 173 (fig.), 175; of 

 petiole, 114; of pulvinus, 115; 

 of root, 65 et seq., 295 ; of 

 stem, 19, 30, 43, 76 et seq., 

 134, 338. 



Cortical bundles, 86. 



Cosmarium, 209 (fig.), 210 ; C. 



meneghini, 209 (fig.). 

 j Cotton, 103 ; plant (Gossypium 



Spp.), 102, 103. 



Cotton-grass (Eriophorum) , 178. 



Cotton-seed oil, 49. 



Cotyledons, digestive action of, 

 150 ; food-reserves of, 40, 41, 

 44, 50 ; of Angiosperms, 355, 

 369 (fig.), 370, 371 (fig.) ; of 

 Conifers, 338 (fig.), 350, 351 

 (fig.), 352 (fig.) ; of Cycads, 

 326 ; structural features of, 30, 



153- 



Covering hairs, 102 (fig.). 



Cow- wheat (Melampyrum), 179. 



Crassulaceae, 178. 



Creeping Buttercup (Ranunculus 



repens), root-structure of, 66-9 



(figs.). 



Crenothrix, 268. 

 Cress (Lepidium), 48 ; " damping 



off " disease of, 235 (fig.). 

 Crocus, 364 ; C. sativus, 64. 

 Crops, fungal diseases of, 230, 231, 



234, 235 (fig.), 241 (fig.), 243 



(fig.), 245, 246 (fig.), 247, 248, 



252-4. 



Crossing (hybridisation), 382-9. 

 Crowberry (Empetrum nigrum), leaf 



of, 163 (fig.). 



Cruciferae, 48, 63, 69, 103, 104, 231. 

 Cryptogamia, 355, 406. 

 Cryptomeria, 347. 

 Crystal-sand, 58. 

 Crystalloid, 50, 51 (fig.). 

 Crystals of, inulin, 44, 45 (fig.) ; 



osazones, 47 (fig.) ; oxalafce of 



lime, 58, 59 (fig.), 130, 237 ; 



pigments, 64. 



Cuckoo-pint (Arum maculatum], 112. 

 Cucumber- family (Cucurbitaceae), 



8 1 ; mildew (Erysiphe poly- 



goni), 243. 

 Cucurbita, hairs of, 102 (fig.) ; 



phloem of, 29 (fig.), 82, 130 ; 



stem-structure of, 80-83 (figs.), 



87 ; tyloses of, 127 (fig.) ; 



vessels of, 35 (fig.), 83. 

 Cucurbita pepo, pollen of, 362 (fig.). 



