INDEX. 



ABRADED surface of roots, 132 



Fig. 73, p. 128 

 Accessory bud, 149 

 Fig. 85, p. 147 



fruits, Figs. 125-129, pp. 198-200 

 Acer rubrum, Figs. 85, 93, 98, pp. 

 147, 157, 163 

 sp., Fig. 129, p. 201 

 Acerose outline of leaves, 159 



Fig. 96, p. 161 

 Acetic bacteria, 37 

 Achene, 193, 194 

 Fig. 122, p. 193 

 Achillea millefolium, Fig. 107, p. 



174 



Acorns, Fig. 123, p. 194 

 Acorus calamus, Figs. 75, 106, pp. 



134, 173 



Acuminate base of leaves, 156 

 Acute apex of leaves, 159 



Fig. 95, p. 160 

 base of leaves, 156 

 Fig. 92, p. 155 

 Adventitious bud, 149 



Fig. 85, p. 147 

 Aerial bulbs, 138 

 hyphse, 46 

 roots, 130 



Fig. 72, p. 127 



^Esculus hippocastanum, Figs. 85, 

 97, 100, 102, pp. 147, 162, 165, 

 167 



Aggregate accessory fruits, 197 

 Agropyron repens, Fig. 75, p. 134 

 Ailanthus, Figs. 102, 122, pp. 167, 



195 

 glandulosa, Figs. 82, 85, 102, 122, 



pp. 142, 147, 167, 193 

 Air cavities, 31 



Albuminous seeds, 208 

 Alder, speckled, Fig. 108, p. 173 

 Aletris farinosa, Fig. 76, p. 135 

 Alfalfa, Fig. 130, p. 202 

 Alga3, 20, 21 

 blue-green, 31 

 brown, 31 



female thallus, 32 

 Fig. 4, p. 27 

 male thallus, 31 

 plant body, 31 

 green, 30 

 plant, 30 

 reproduction, 30 

 red, 32 



Fig. 6, p. 33 

 summary of, 30 

 Algal-fungi, 51 

 Allium canadense, Fig. 77, p. 136 



sativum, Fig. 77, p. 136 

 Alnus incana, Figs. 85, 106, pp. 



147, 173 



Alpinia officinarum, Fig. 75, p. 134 

 Alternate branches, 133 

 leaves, 167 



Fig. 99, p. 164 

 Alternation of generations, ferns, 



82 



horsetails, 92 

 liverworts, 60 

 mosses, 70 

 Althaea officinalis, Fig. 112, p. 182 



rosea, Fig. 129, p. 201 

 Amanita phalloides, 53; 



Fig. 20, p. 53 

 Aments, 173 



Fig. 106, p. 173 

 Amphitroous ovule, 185 

 Amplexicaul attachment of leaves, 



156 

 Ananas ananas, Fig. 127, p. 199 



