INDEX 



395 



Growth, 39, 264 ; definite annual, 

 138; described, 153; control 

 mechanism, 342 ; effect of humirUty 

 on, 158 ; effect of light on, 158, 

 159 ; effect of temperature on, 

 157, 168 ; of general tissue, 

 3.54 ; grand period in roots, 221 ; 

 indefinite annual, 138 ; of leaves, 

 161; primary, 119; of roots, 

 161; secondary, 119; of stems, 

 160. 



Guard cells, 33, 49, 50, 262; oper- 

 ation of, 49. 



Gum, 104. 



Gum tree, 113. 



Guttation, 52. 



Gymnosperm, 352. 



Haberlandt, Anatomy, 31. 



Hair-like structures, 351. 



Hairs, 70. 



Half parasite, 87. 



Haustorium, 83, 256. 



Head, 336, 337. 



Healing of injuries, 123, 206. 



Health in plants, 369. 



Heart wood, 124, 145. 



Heat of respiration, 168. 



Heliotropism, 54. 



Henii-cellulose, 103. 



Herb, 9. 



Herbarium, 3. 



Heredity, 10, 13, 39, 128, 285,308; 



defined, 308, 314. 

 Heterozygous, 310. 

 Hilum, 376. 

 Histology, 3. 

 Hollow column, 180. 

 Homozygous, 310. 

 Honesty, 348. 

 Hooks, 361. 



Horse Chestnut twig, 120. 

 Horticulture, 4. 

 Host, 83. 

 Hotbeds, 258. 

 Houseleek, 142. 

 House plants, 48, 241. 

 Humus, described, 241, 243. 

 Huxley, 35. 

 Hybrid, 320. 



Hybridization, 318 ; method, 320. 

 Hydrangea, 339. 

 Hydrophyte, 190. 



H.vdrotropism, 177 ; de.scrihed, 247. 

 Hygroscopic phenomena, 237 ; tis- 

 sues, 36r). 

 Hypocotyl, 355, 374. 



Idioblasts, 33. 



Imbibition, 148, 237. 



Imbricate, 329. 



Immune varieties, 370. 



Improvement of plants, 2. 



Indian Pipe, 83, 85. 



Inhibitory influence, 202. 



Initial cell, 3.55. 



Injuries, healing, 122. 



Insect-pollinated flowers, 290 ; char- 



acteristif^s, 290. 

 Insects as cross-pollinators, 290. 

 Integuments, 274. 

 Intercellular air system, 33, 266. 

 Internode, 116. 

 Involucre, 339. 

 Iodine test, 20. 

 Iris flower, 287. 

 Ironwood, 113. 

 Irritability, 39, 55. 

 Ivory Palm, 373. 



.lack fruit, 346. 

 Jussiwa, 252. 



Kerner, Pflanzenleben, 57. i 



Knees, 252. 



Knowledge, 5 ; useful, 5. 

 Kny, L., 1.33. 



Laciniate, 203. 



Lamarck, 315. 



Latex, 108, 109 ; system, 134 ; sys- 

 tem, described, 134. 



Lathyrus Aphaca, 78, 80 ; pod, 

 365. 



Le Maout and Decaisne, Traite, 76. 



Leaf, anatomy, 28, 29 ; arrange- 

 ments, 139 ; auriculate, 6S, 69 ; 

 axil of, 73 ; of Bidens Bcckii, 62 ; 

 characteristics, 15 ; compound, 16, 

 67 ; connate-perfoliate, 69 ; eco- 

 nomics, 94 ; entire, 68 ; as a 

 factorj', 26 ; functions, 7, 72 ; 

 Hnear, 63, 63; lobed, 67 ; margins, 

 68 ; morphological plasticity, 82 ; 

 mosaic, 56 ; netted-veined, 17, 

 66 ; orbicular, 62, 63 ; ovate, 64, 



