350 



INDEX 



Pinks, the Alpine, 29, 112-113 

 Pinus cembrat Linn., see the Stone 



Pine 

 Pinus montana^ Mill., see the 



Mountain Pine 

 Pinus picea, Dur., see the Spruce 

 Pinus picea, Linn., see the Silver Fir 

 Pinus succinifera, Goepp., 241 

 Pinus sylvestrisy Linn., see the Scotch 



Fir 

 Pitcher Plants, the, 214 

 Plane, the, 210 

 " Plant slums," 82 

 Plantains, the, 281 

 Platanthera hifolia^ Rich., see the 



Lesser Butterfly Orchid 

 Platanus, see the Plane 

 Pleistocene Period, the, 301 

 Pliocene Period, the, 301, 303 

 Poa alpina^ Linn., 157 

 Polemonium coeruleumj Linn., see 



the Jacob's Ladder 

 Pollen and insects, 269-274 

 Pollen, protection of, 279-282 

 Polyqala cham(sbuxus, Linn., see the 



Box-leaved Polygala 

 Polygala, the Box-leaved, 31, 251- 



253, 281 

 cross-polUnation of, 252-253, 281 

 Mediterranean origin of, 251 

 time of flowering of, 31, 252 

 Polygala vulgaris, Linn., see the 



Common Milkwort 

 Polygalaceae, see the Milkwort 



family 

 Polygonaceae, the, see the Dock 



family 

 Polygonatum, see the Solomon's Seal 

 Polygonum historta, Linn., see the 



Bistort 

 Polygonum, the Viviparous, 156-157 



bulbils of, 156-157 

 Polygonum viviparumy Linn. , see the 



Viviparous Polygonum 

 Polygonums, the, 150 

 Pondweed family, the, 205 

 Pondweeds, the, 205 

 Poppy family, the, 195 

 Poppy, the Alpine, 195-196, 272, 295 

 Potamogeton, see the Pondweeds 

 Potentilla frigida, Vill., see the 



Frigid Potentilla 



Potentilla grandijlora, Linn., see the 



Large-flowered Potentilla 

 Potentilla minima. Hall, see the 



Smallest Potentilla 

 Potentilla multifida, Linn. , 295 

 Potentilla nivea, Linn., 295 

 Potentilla sibhaldiy Haller, see the 



Sibbaldia 

 Potentilla, the Frigid, 197 

 Potentilla, the Large-flowered, 197 

 Potentilla, the Smallest, 197 

 Potentilla, the Spring, 31, 197 



time of flowering, 31 

 Potentillas, the, 115, 128, 158, 197 

 Potentilla tormentilla. Neck., see the 



Tormentil 

 Potentilla verna, Linn., see the 



Spring Potentilla 

 Primitive soils, 95-97, 170-171 

 Primrose Family, 33, 61, 64, 72, 181 

 Primrose, the, 66, 67 

 Primrose, the Bird's-eye, 31, 67, 69- 



70, 300 

 function of wax on leaf of, 69-70 

 time of flowering, 31 

 Primula auricula, Linn., see the 



Auricula 

 Primula elatior, Jacq. , see the Oxlip 

 Primula farinosa, Linn., see the 



Bird's-eye Primrose 

 Primula glutinosa, Wulf. , 72 

 Primula hirsuta. All. , see the Hairy 



Primula 

 Primula integrifolia, see the Entire- 

 leaved Primula 

 Primula longiflora. All., see the 



Long-flowered Primula 

 Primula cenensis, Thom. , 72 

 Primula pubescens, 70 

 Primula, the Entire-leaved, 72 

 Primula, the Hairy, 31, 70, 72 



time of flowering, 31 

 Primula, the Long-flowered, 67, 71- 



^ 72, 296 

 Primula viscosa, All. , 72 

 Primula vulgaris, Huds., see the 



Primrose 

 Primulacese, see Primrose Family 

 Primulas, the, 33, 61, 167, 212, 281, 



284 

 Protections against unbidden guests, 



275-277 



