INDEX 



Starred page numbers indicate where cuts occur. App. refers to the Appendix. 



Absorption of carbon dioxide, 136- 

 140. 



Absorption, selective, 44. 



Acacia, leaf of, *110. 



Accessory buds, 88, *89, *90. 



Accessory fruits , *189, 190. 



Acuminate, App. I, *356. 



Acute, App. I, *356. 



Adaptations to conditions of exist- 

 ence, 204, 205. 



Adherent, 155, *156. 



Adventitious buds, 95. 



Adventitious roots, 30, *31. 



Aerial roots, 30, *31. 



Agaricus. See Psalliota. 



Age of trees, 54, 55. 



Aggregate fruits, *189. 



Allan thus twig, *88. 



Air chamber, *128, *129. 



Air, relation to germination, 8-10. 



Akene, *185, 186. 



Albuminous substances, 19. 



Algs, 215-238*. 



Algal fungi, 239, 246-249*. 



Alternate, *52. 



Alternate leaves, *106. 



Alternation of generations, 270, 

 271, »285, 286. 



Anatomy of plants. See under Booi, 

 Stem, Leaf, Flower, Fruit, Struc- 

 ture of. 



Angiosperms, 153, 154. 

 Animal food, need of, 122. 

 Animals, defenses against, 123- 



126*. 

 Annual growth, indefinite, 54. 

 Annual ring, *73. 

 Annuals, 54. 

 Anther, *153. 



Anther, modes of opening, *162. 

 Antheridia, 224, *226, *229, 232- 



236*. 

 Antipodal cells, *166. 

 Ants plant seeds, *199. 

 Apetalous, *149. 

 Apple, *322. 



Apple leaf, stipules of, *100, 101. 

 Aquatic roots, 31, 32. 

 Arch of hypocotyl, 22, *23, 24. 

 Archegonia, *226, *229, 232-236*. 

 Aristolochia' stem, bundle of, *69. 

 Aristolochia stem, cross-section of, 



*68, 70. 

 Arrangement of leaves, 105-110*. 

 Arrow-shaped, App., *356. 

 Ascus, 252, *253. 

 Asexual generation, *281, *292. 

 Asparagus, 61, *62. 

 Aspergillus, *251. 

 Aspldium, *281. 



Asplenium, type study, 282-285*. 

 Assimilation, 140. 



367 



