INDEX OF PLANT NAMES 



5" 



Pinus, root, 45 ; protection of sto- 

 mata, 176 ; stamen, 341 



austriaca, 208 



canariensis, 446 



excelsa, 228 



Pinea, 435, 436 



ponderosa, 33 



— sylvestris, 26, 406, 445 



Pirus Malus, 90 

 Pistacia Lentiscus, 212 

 Pistia Stratiotes, 51 

 Pisum, 45 

 Pitcher plant, 267 



, American, 267 



— , Australian, 276 



Plantago, 383 



— - — Coronopus, 25 



lanceolata, 25, 331, 394 



major, 25, 420 



maritima, 196, 197 



media, 25 



Plantain, 117, 420 



— , ribwort, 394 



, water, 108, 294, 378 



Platanthera chlorantha, 251 

 Platanus occidentalis, 88, 89 

 Plum, 401, 434.435 

 Poa alpina, 460 



sandbergii, 31 



Podocarpus, 263, 406 



chilina, 260 



Podostemon, 199 

 Polygonum, 351 



alpinum, 460 



amphibium, 180, 295 



aviculare, 25 



sacchalinense, 88, 89 



Weyrichii, 113 



Polygonatum multiflorum, 452 

 Polypompholyx, 280 

 Pondweed, cuticle, 293 ; leaf, 294 ; 

 pollination, 378 ; youth form, 



^^ 

 Poplar, stomata, 172, 185 ; as host, 



225 ; cross-pollination, 

 382 ; growth, 452 



, Lombardy, 106, 107 



Poppy, latex, 313 ; pollination, 356, 

 394 ; fall of corolla, 403 ; 

 seed dispersal, 408 



Populus, 403 



nigra, 88 



Posidonia, 294 



Potamogeton, roots, 36 ; absorption 

 of salts, 70 ; transpiration 

 current, 201 ; pollination, 

 383 ; seed dormancy, 434 ; 

 seed germination, 435 



Potato, roots, 40, 41 ; transpiration, 

 IS9 ; stomatal movement, 

 171, 172 ; mycorhiza, 257 ; 

 fall of flower, 403 ; forcing, 

 456; multiplication, 460, 461 



Poterium Sanguisorba, 331 



Primrose, roots, 25 ; rosette, 117 ; 

 contractile roots, 288 ; 

 pollen, 347 ; hetero- 

 styly, 388 ; flowering, 

 457 ; multiplication, 

 460 



, evening, 351 



acaulis, 388 



sinensis, 389, 309 



veris, 388 



Procris, 118 



Prosopis, 45 



velutina, 35 



Pro tea, 374 



Protococcus, 80 



Prunus Laurocerasus, 88, 89 



Psamma arenaria, 175, 179 



Pseudotsuga mucronata, 33 



Psidium guajava, 228 



Psoralea lanceolata, 32 



Psychotria, 264, 265 



Pyrola, 242 



aphylla, 242 



QuERCUS Ilex, 190, 212 

 Robur, 90, 136 



Raddish, 44 

 Rafflesia, 219 



Arnoldi, 234, 238 



Ragwort, 118 

 Ranunculus, 360 



acris, 394 



aqua tills, 37 



Ficaria, 423 



Flammula, 26, 36 



fluitans, 293 



sceleratus, 44, 426 



Raspberry, 420 

 Rattle, red, 219 



, yellow, 219, 229 



Razoumowskia, 228 



Reseda Luteola, 25 



Rest-harrow, 261 



Retinispora, 445, 446 



Rhamnus Alatemus, 212 



Rhinanthus, 219, 220, 221, 232 



Rhizophora, roots, 24 ; water 



storage, 161 ; vivi- 



pary, 431 

 Mangle, 416 



