Index. 
Najas flextlis, 75, 76, 159. 
—— graminea, 53, 95, 99, 160. 
——- marina, 46, 57, 76, 81, 86, 100, 
159, 160. 
——~ minor, 52, 53, 86, 95, 99, 100, 
160. 
Nathorst, Prof. A. G., 51, 59, 60, 65, 
8x, 82, 109, III, 112, 119, 120, 132, 
139, 141, 143, 147, 149, 169. 
Natural selection in insular floras, 12, 21. 
Nehring, Prof. A., 51, 81, 153. 
Neolithic Period, 38, 45, 46, 53, 58- 
71; 76, 79, 86, 90, 92, 93, 96, 98, 
106, III, 171-179. 
New Forest, 16, 32. 
Norfolk, 1, 14, 15, 18, 27, 32, 35, 36, 39, 
50-52, 56-59, 64, 74, 82-85, 88, 
89, 93, 94, 97, 100. 
Northampton, 83. 
North Sea Canal, 72. 
North Sea, freezing of the, 39. 
Norway, horse-chestnut in, 11. 
Nuphar luteum, 28, 68, 72, 75, 81, 83, 
105. 
Nymphea alba, 28, 68, 72, 75, 81, 82, 
96, 106, 
Oak, 23, 25, 26, 28-30, 46, 53, 57, 58, 
LOO, 145, 146. 
Oceanic islands, plants of, 8, 12, 33. 
Gnanthe fistulosa, 123. 
Lachenalii, 123. 
Phellandrium, 124. 
Opium Poppy, 63, 98, 106. 
Orkney, seedling oak in, 29, 30. 
Osmunda rgalis, 91, 96, 168. 
Ostend, Norfolk, 56, 83, 84. 
Outliers in botany, 19, 22, 23, 40. 
Overstrand, 84. 
Overtoun, Ayrshire, 84. 
Oxalis Acetosella, 23, 112. 
Oxford, 84, 85. 
Oxyria digyna, 100, 139. 
Pakefield, 85, 86. 
Paleearctic flora, 7. | 
Paleeolithic man, 38, 45, 74, 77) 78, 85, 
88, 91, 93, 100. 
187 
Pupaver Argemone, 106. 
somniferum, 63, 98, 106. 
Paradoxocarpus, see Stratiotes. 
Parkstone, Dorset, 86. 
Pear, 65, 119. 
Peat-mosses, Oaks in, 100. 
Pine in, 16, 86, too. 
plants of, 14, 15, 22, 49, 
79 
Pedicularis palustris, 135. 
Pengelly, W., 59. 
Pentland Firth, acorns carried across, 
30. 
Perennial plants, conditions needed by, 
II, 12. 
- : in oceanic islands, 12. 
Perthshire, 53, 64. 
Peucedanum palustre, 124. 
Phillips, Prof. J., 76. 
Phragmites communis, 57, 80, 167. 
Physical geography, past changes in, », 
7, 8, 27, 28, 33-47. 
Picea excelsa, 52, 64, 82, 83, 99, 151, 
152. 
Picris hieraciodes, 85, 130. 
Piette, Ed,, on cultivated forms of 
Prunus, 114. 
Pinguicula grandiflora, 5. 
vulgaris, 5. 
Pinus maritima, 12, 99. 
montana, 152. 
sylvestris, 16, 24, 26, 53, 57, 64, 
82, 86, 99, 100, 152, 153. 
Plantations, influence of, 16. 
Pliocene flora, 34-36, 97- 
Platanus, 75, 79. 
Pods, ejection of seeds from, 23. 
Poisonous fruits, 31. 
Pollen, effects of wind-borne, on island 
plants, 12. 
Polygonum amphibium, 139. 
——_—  Aviculare, 138. 
——_——. Hydropiper, 138. 
lapathifolinum, 139. 
Persicaria, 139. 
viviparum, 139. 
Polystichum, 76, 81. 
Ponds, plants of isolated, 14, 28, 
32. 
Poplar, 61, 76, 81, 150. 
Poppy, 24, 32, 63, 98. 
Populus canescens, 71, 150. 
