258 



INDEX 



New and Old World genera, 190 

 New Caledonia, endemic genera of, 



169, 170 

 New forms at commencement of 

 life, 212, 213; most frequent at 

 edges of dispersal, 218 ; range from 

 small to large, 220 

 New species, formation of, 34-5 

 New York, endemics of, 04 

 New Zealand, age and area in, 64; 

 endemics of, 150; of, and islands, 

 69; endemics belong to large 

 genera, 165; endemic genera, 170, 

 171 ; flora of outlying islands, 66, 

 72; genera above average world 

 size, 164; genera by sizes, 235; 

 invasions of, 76, 139; predictions 

 about flora of New Zealand and 

 islands, 66-74; Ranunculus in, 

 153; species per family, 238; 

 spread of introductions in, 26; the 

 most irregular curve of all, 196. 

 And cf. Auck lands, Chathams, 

 Epilobium, Gunnera, Ilaasfia, 

 Kermadec, Monocotyledon , Olear- 

 ia. Outlying, Ranunculus, Stewart, 

 Vegetation, etc. 

 North America, spread of introduc- 

 tions in, 26; endemics of, 86; 

 monotypes, 188, 189 



Objections to hypothesis of age and 



area, 70, 84 

 Oenothera, mutation in, 224 

 Oldest and most variable types at 



edge of dispersal, 218; living 



species, 143 

 0/earia, distributi.in in New Zealand, 



101 

 Open plant societies, 20, 27, 50, 



213 

 Origin of species, 10, 204 

 Orkneys, distribution of flora, 70 

 Outlying islands of New Zealand, 



flora of, 66 



Pacific Islands, plants of, 17 

 Palaeobotanical study and age and 



area, 137 

 Palaeotropical genera, 190 

 Pangenesis, 222 

 Parent and child occur together, 



219, 220, 221 

 Pelea, distribution in Hawaiian 



Islands, 161 

 Permanence of species, 207 

 Phylogeny, 240 

 Physical barriers, 36 

 Plant migration, 137 

 Plant societies or associations, 20, 



50 



Podostemaceae, 4; distribution, 57, 



92; characters, 210 

 Polemoniaceae, distribution of, 171 

 Pollard WiUow flora, 12 

 Polyphyly, 11, 47, 105 

 Pomaderris apetala, distribution, 67 

 Pont-de-Gail flora, 137, 143, 146 

 Prediction, 66, 76, 87, 230 

 Progress in knowledge of geographical 



distribution, 3, 228, 229. Cf. 



Limiting factor 



Rainfall, 41-4; distribution of, 43 

 Rank and range, 105, 118, 130 

 Ranunculus, 153; distribution in 



New Zealand, 1.53, 163, 216, 220, 



239 

 Rapid spread of introductions, 24, 



25, 94 

 Raylcigh, Lord, 33, 145, 152, 212 

 Regional extermination, 140 

 Regression, 207 

 Regular mechanisms for dispersal, 



12-19 

 Reid, Mrs E. M., 82, 137 

 Relics, 86, 88, 93, 186, 192-3, 199, 



216, 229, 231-3; explanation of 



endemism, 58-9. And cf. Djing 



out, KiUing out 

 Reservations in regard to age and 



area, 63, 70 

 Reversion, 207 

 Ridley, H. N., 18, 151 

 Rio de Janeiro climate, 43 

 Ritigala, and flora of, 14. 54, 55 

 Rivers as barriers, 37 

 Rubiaceae, logarithmic curve, 241 



St Helena, endemic flora, 150; 



spread of introductions in, 26 

 Salsola Kali, distribution of, 49 

 Schumacheria in Cevlon, distribution 



of, 159 

 Scillv Islands, distribution of flora, 70 

 Scott, H., 202 

 Sea, dispersal by, 14-17; as barrier, 



36 

 Seed, quantity of, necessary for 



transport to a distance, 32 

 Senecioneae, 126, 128, 134 

 Sequoia, formerly of great dispersal, 



141 

 Sinnott, E. W., 95; and Bailev, I. 



W., 40 

 Size and space, 71, 74, 113 (chapter), 



115, 171-2, 174, 178, 185, 188, 



190, 197, 233; in Britain, 113; in 



Compositae, 132 ; in Helobieae, 110 

 Sizes of families in hollow curves, 



186; of genera in hollow curves, 



174, 178; of mutations, 215 



