eoo 



GENERAL INDEX. 



Placenta, 419, 433 



Placodium, 309 



Plagiantlius, 547 



Plane Tree, 487 



Plane Tree Family, 487 



Platanaceae, 487, 5B5 



Platanus, 103, 487, 504, 565 



Platygrapha, 310 



Platyzoma, 376 



Plantaginaccae, 507 



Plantago, 106, 507 



Plantain, 106, 428, 472, 507 



Plantain Family, 507 



Plant Body, 133 



Plant Cell, 15 



Plant Food, 175 



Plasmodium (pi.— a) fi, 207 



Plectospora, 303 



Plerome, 161 



PleurocarpsB, 359, 360 



Pleurociirpus, 235 



Pleurosigma, 230 



Plum, 62, 146, 293, 430, 030 



Plumbaginacese, 507 



Plumbago, 508 



Plumule, 186, 386, 404, 474 



Pliycoerythrine, 376 



Poa, 279. 455 



Podisoma, (see Gymnosporangium) 



Podocarpus, 409, 410 



Podogonium, 505 



Podophyllum, 559 



Podosplia;ra, 371, 281, 283 



Pogonatum, 359 



Poison Hemlock, 530 



Poison Ivy, 165, 516, 535 



Poison Oak, 535 



Poison Sumach, o35 



Poke-berries, 173 



Poke weed, 497 



Pole Bean, 188, 531 



Polemoniacese, 503 



Polemoniales, 500 



Polemonium, 503 



Poliantlies, 461 



Pollen, 34, 46, 130, 389, 417 



Pollen-sac, 394. 418 



Pollen Tube, 47, 391 



Pollination, 430, 431 



Pollinia, 503 



Polyactis, 388 



Polyandrous, 433 



Polyanthus, 468 



Polyartlirndactylse, 334 



Polycarpellary, 433 

 Polygala, 551 

 PolygaiaceiB, 550 

 Polyg:ilales, .'550 

 Polytramoiis Flowv-rs. 431 

 PolvgonacesB, 04, 496 

 Polygonum, 333, 490, 497 

 Polygynoecial Fruits, 437 

 Polyhedral Cell, 19 

 Polyides, 377 

 Polypetala;, 476, 518 

 Polypetalous, 431, 433 

 Polypodiaceae, 377 

 Poly podium, 109, 877 

 Poiypori, 241 

 Polyporites, 331 

 Polvporus, 338, 330, 331 

 Poly.sepalous, 431, 438 

 Polysiplionia, 277 

 Polysiphonides, 278 

 Polysymnietrical Flowers, 430 

 Polytriclium, 150, 853, 359, 300 

 Pome, 430 

 Pomese, 527 

 Pomegranate, 533 

 Pondweeds, 400 

 PontederacesB, 457 

 Pontederales, 457 

 Porcupine Grass, 157 

 Portlandia, 518 

 Poplar, 428 

 Poppy, 550 

 Poppy Family, 5.50 

 Populus, 1.50. 487, 564, 565 

 Populus, 102, 143 

 Portulaca, 197, 264, 549 

 Portulacacese, 549 

 Potamales, 466 

 Potamogeton, 131, 186 

 Potash Salts, 176 

 Potassium, 175 



Potato, 56, 58, 166, 181, 187, 500 

 Potato Fungus, 304 

 Potentilla, 264 

 Potentilleaj, 538 

 Prickles, 137 

 Prickly Ash, 137, 543 

 Prickly Pear, 530 

 Pride of India Tree, 540 

 Primary Bundle, 121 

 Primary Cell-wall, 35, 08 

 Primary Cortex, 408 

 Primary Meristem, 86, 88, 89, 100 

 121, 138, 144, 161 



