306 



INDEX 



Artemisia, 159, 160, 162, 165 



frigida, 207 

 artificial selection, 196 

 Asdeirias, 242 

 Ascophora, 105 

 asparagin, 101 

 Asparagus, 163 

 aspects, 223 

 Aster, 227, 246, 293 

 Astragalus, 226, 293 



crassicarpns, 293 

 autogamy, 124, 127 



direct, 127 



indirect, 127 

 autotrophic plants, 104 

 autumn aspect, 224 

 available water, 9, 14 



detcnnination of, 13 

 awned disseminules, 243 



Baccharis, 162 



Bacon, on evolution, 188, 192 



Bacteriacew, 243 



Bahia dissecta, 150, 104 



barriers, 265 



biological, 266 



influence of, 266 



physical, 266 

 belt transect, 211 

 berry, 131 

 Betula, 126, 242 

 BicucuUa, 120 

 Bidens bigclovii, 184 

 Bvjnonia, 126 

 bilateral zo nation, 300 

 biological barriers, 266 

 biotic factors, 5 

 bisexual crosses, 198 

 Bistorta bistortoides, 279 

 blast ochores, 247 

 bog plants, 168 

 'bog xerophytes," 19, 168 

 bolochores, 247 

 Botri/dium, 39 

 Bou'teloua, 226 



Bouieloua-Koelera-consocies, 226 

 Brassica alba, 42 

 Brauneria, 242 

 brot ochores, 246 

 Bryophyllum, 162 

 buds, 114 

 bulblets, 115 

 bulbs, 115 



burned areas, succession in, 281 

 Bursa, 178, 182 



bursa- pastoris, 179 



CadacecE, 164 

 calcium, 19, 101 

 Callitriche, 125, 167 



Callitriche autumnal s, 167 



6i/7f/o, 149, 16S 

 Calluna, 162 

 Caltha, 169 



leptosepala, 166 

 Calypso borealis, 60, 126 

 calyptra, 41 

 cambium, 41, 51, 53 

 Campanula aparinoides, 121 



petiolata, 224 



rotundifolia , 121 

 capillarity, 16, IS, 20, 55 

 Capnoides aureum, 179 

 capsule. 132 

 carbonates, 19 



carbon diox'de absorption and diffu- 

 sion. 81 

 Carex, 242 

 carphospores. 242 

 carpotropic movements, 132 

 CastiUeia integra, 206, 207 

 cedar apples, 5 

 Cenchrus, 243 

 centrospores, 243 

 Cerastium , 243 

 CeratophyUum, 125, 168 

 Cercocarpus, 292 

 chaffy disseminules, 242 

 Chamcenerium angustifoUum, 123,136, 



137, 140, 195, 197 

 changes of epidermal cells, 147 

 chart quadrat, 204, 205 

 chemosynthesis, 100 

 chlorenchym, 57, 86 



changes in, 150, 172 

 chlondes, 19 

 chlorophyll, absorption spectrum, 79 



influence of, SO 



nature of, 79 



production of, 79 

 chloroplasts, 177 



influence of, 171 



influence of light on number and 

 position of, 85 



number and position, 86 

 chlorovaporization, 63 

 chresard, 9, 13, 14 

 Circcea, 120 

 circumnutation, 141 

 cladophyll form, 163 

 classification by habitats, 231 



developmental, 233 



of formations, 230 



regional, 234 

 Claytonia, 131 

 cleistogamous flowers, 123 

 Clematis, 120, 243 

 climate, 27 



climatic factors, influence of, 24 

 clinometer, 23 



