368 
Australian blackberry, leaf of, *116. 
Axillary bud, 88, 89, #90. 
Axillary flowers, App. I, *357. 
Bacilli, #242. 
Bacteria, 240-244*. 
Bacteria, type study, 240, 241. 
Banana, 328. 7 
Barbed hairs, 124, #126. 
Barberry, spiny leaves of, *123, 
124. 
Bark, 67~73*, 76, 77. 
Basidia, 261, *262. 
Basidia fungi, 255-262*. 
Bast, *68, *69, *70, #72. 
Bast-bundle, *68, *69. 
Bean-pod, study of, 183. 
Bean seed, *6. 
Bees, 169-173*, *176. 
Beet leaf, *128. 
Beggar’s-ticks, #197. 
Bell-shaped, *152, 
Berry, 181, 188, 329. 
Berry, study of, 181. 
Biennial, 38, 39, 54. 
Bilateral symmetry, *150. 
Birch, branching of, *53. 
Bird-pollinated flowers, 174. 
Birds plant seeds, 198. 
Black mold, ‘type study, 
249%, 
Blackberry hybrids, 320. 
Bladder-wrack, 230-233*. 
Blue-green algz, 216-218*. 
Box-elder, buds of, *89. 
Box-elder, radial and cross-sections 
of stem of, *70. 
Bract, App. I, *857. 
Branches formed from adventitious 
buds, 95. 
246— 
ESSENTIALS OF BOTANY 
Branching, alternate, *52. 
Branching and leaf-arrangement, 
51, *52. 
Branching, opposite, *52. 
Brazil nut, food stored in, 20. 
Breathing-pore, *129. 
Brown alge, 230-234*. 
Bryophytes, 265-279*, 
Buckeye, bud of, *87. 
Bud, horse-chestnut, 86, 87. 
Bud-scales, 86, *87, 88, *92. 
Buds, 86—96*. 
Buds, adventitious, 95. 
Buds, dormant, 95. 
Buds, naked, *88. 
Buds, position of, 88, *89, *90, *97. 
Buds, structure of, 86, *87, *92. 
Bulb, 59, *60, *61. 
Bulb, hyacinth, *60. 
Bulb, onion, 59, *61. 
Burs, 195, *196, *197. 
Buttercup, leaf of, *100. 
Buttercup, study of flower of, 146, 
147. 
Butternut, buds of, 89, *90. 
Cabbage, a bud, 89. 
Cabinet woods, 346. 
Cacao tree, *327. 
Cactus, 61, *117. 
Cactus flower, transitions in, *159, 
— 160. 
Caladium, 59. 
Calyx, *148. 
Cambium, 68-73%, 
Cambium-layer, 71, #72, *73. 
Canna, parallel veining in, *101. 
Capsule, 187, #194. 
Carbon dioxide, absorption of, 136, 
137. 
