600 



INDEX 



All numbers refer to pages, heavy type indicating illustrations. 



Pine grove illustrating mutual ac 



commodation, 453, 454 

 Pine Order, 393, 397, 426, 427 

 Pines, 550 

 Pineapple, S8, 103, 121, 124, 233; 



fiber, 232; gall, 272 

 Pineapple-cloth, 234 

 Pineapple Family, 397: pineapple, 



103; southern moss, 234 

 Pin-mold, 495, 496, 497 

 Pin-mold Family: pin-mold, 496, 



497 

 Pin-mold Fungi, 495 

 Pink Family, 398 

 Pinnate, 341; nervation, 352 

 Pinnately, compound, 341; nerved, 



341 

 Pinus sylveslris, Scotch Pine 

 Piperacece, Pepper P^amily 

 Piperales, Pepper Order 

 Piper nigrum, Black Pepper 

 Piping, 287 



Pistil, 11, 14, 308, 319, 345; com- 

 pound, 347; simple, 347 

 Pistillate flowers, 347 

 Pistil, parts of, ovary, 345; ovule, 



346; placenta, 346; stigma, 345; 



style, 345 

 Pii^um sativum, Pea 

 Pith, 250, 254 

 Pith-rays, 250, 253, 254 

 Pivotal place of plants in economy 



of nature, 574 

 Placenta, 346; axile, 355; dorsal, 



346; parietal, 362; ventral, 346 

 Plaiting, 223, 235 

 Planetesimal hvpothesis, 465 

 Plane-tree, 267, 268 

 Plane-tree Famil}', 399: American 



sycamore, 267 

 Planks, 270 



Planlaqinacece, Plantain Family 

 PIrnifaginnles, Plantain Order 

 Plantain Family, 401 

 Plantain Order, 401 

 Plant, formulas, 352; groups, 358; 



names, early, 3 

 I^lant life and human life, 575 

 Plants, annual, 11; biennial, 52; 



compass, 73; did'cious, 360; 



habit of, 359; mona'cious, 374; 



ocreate, 372; perennial, 58; 



polygamous, 347; shrub, 36; 

 tree, 36; glabrous, 343; pubes- 

 cent, 343 

 Plants and animals defined, 573, 



574 

 Plants, how named, 2; in general, 

 574; our dependence upon, 1; 

 needs of, 2 

 Plant's place in Nature, 561 

 Plants poisonous, to eat, 192; to 



handle, 217 

 Plant segment, 324 

 Platanacece, Plane-tree Family 

 Plalanus occidentalis, Ameiican 



Sycamore 

 Pleurococcacece, Wall-stain Algae 

 Pleuroccus vulgaris, Wall-stain 



Alga 

 Plicate aestivation, 381 

 Plicate-convolute aestivation, 381 

 Plum, 88, 90, 121, 124, 364; wood, 



357, 263 

 Plumule, 48, 317, 318, 319, 546, 



556 

 Podded Jute, 232 

 Poison, Dogwood, see Poison- 

 sumac; Hemlock, 194, 195, 209, 

 370, 410, 411 

 Poison-ivy, 217, 218, 219 

 Poison-oak, see Poison-ivy 

 Poisonous bark, 196; drugs, 176; 

 flowers, 205, 208; fruits and 

 seeds, 209; herbage, 199; honey, 

 205, 207, 208; mushrooms, 111, 

 213; juice, 357; plants, 112, 162, 

 163, 192, 219; substances, 302; 

 underground parts, 192; volatile 

 oils, 177 

 Poisons, 162; as by-products, 192 

 Poison-sumac, 217, 220 

 Poke, Indian, 390, 424, 425 

 Pokeweetl, 195, 196, 208, 209 

 Pokeweed Family, 398: pokeweed, 



195, 196 

 Polemoniales, Phlox Order 

 Poles, 245, 270 

 Pollen, 12, 14, 319; grain, 550, 



551, 556 

 Pollen-sacs, 325, 326 

 Pollen-tube, 551, 555, 556 

 Pollination, 557 

 Polygamous flowei-s, 347, 354 



