738 



BOTANY 



PeUia, 4-J9 



Peltate leaves, 43 



Pdligera, 420 



Penicillium, *391 ; selective power. 195 



Pennatae, 349 



Pentacyclicae, 645 



Pepper, Piper nigrum 



Perforate leaves, 33 



Perianth, 40 



Periaxial wood, 144 



Periblem, 157 



Pericarp, 519 



Perichaetium, 433 



Periclinal walls, 156 



Pericyle, 118 



Peridenn, 145 



Peridiueae, 342 



Peridinivm, *343 



Peridium of the Uredineae, 404 ; of 



Gasteromycetes, 413 

 Perigynous flowers, *505, 506 

 Periodicity in development. 261 

 Periplasm, 441 

 Perisperm, 473 

 Perisporiaceae, 389 

 Perisporieae, 390 

 Peristome, 436, *437, *438 

 Perithecium, *390, *394 

 Periwinkle, Vinca 

 Permanent tissue, 99 

 Peronospora, 382, *383 

 Peronosporeae, 381 . 

 Persea, *582, 583 

 Personatae, 661 



Peruvian wax palm, Geroxylon andicola 

 Petal, 37 

 Petasites, 688 

 Petiole, 31 ; structure, 122 

 Petroselinum, 641 

 Petunia, *661, 663 

 Peziza, *392 P^ t o,^ ? ** 1 ^^ 



Phaeophyll, 62, 368 

 Phaeosporeae, 368 

 Phajus, leucoplasts, *75 

 Phalloideae, 415 

 Phallus, *414, 415 

 Phanerogam, growing point, 157 

 Phanerogamia, 471 

 Pharbitis, 283, *284 

 Phascaceae, 436 

 Phascum, *423 

 Phaseoleae, 609 

 Phaseolus, 609 ; growth, 257 ; starch 



grains, *74 

 Phelloderm, 147 

 Phellogen, 146 

 PhUaddphus, 593 

 Plilfunn, 530 

 Phloem, 112, *141 ; parenchyma, 113; 



secondary, 137 

 Phloeoterma, 117 



Phlomis, 660 



Phlox, ,.-,; 



Phoenix, 533 



Phormium, leaf, *184 



Phosphorescence, 245 



Phosphorus in plants, 187, 188, 189 



Photometry, 278 



Photosynthesis, 216 



Phototactic movements, 265 



Phragmidium, 405, *406, *407 



Phycocyanin, 62 



Phycoerythrin, 62, 374 



Phycomycetes, 378 



Phyllactinia, 390 



Phyllocactus, 631 



Phylloclades, 25 



Phyllode, 45, *162, *163, 210, 212 - 



Phylogeny, 2, 9 ; of the internal structure, 



152 



Physalis, *520 

 Physiology, 6, 171 

 Physodes, 58 

 Physostigma, 609 

 Physostigmatis semina, 609 

 Phytelephas, *94, 225, *473. 533; cell 



wall, 71 

 Phyteuma, 677 



Phytolacca, vascular bundles, 124 

 Phytolaccaceae, anomalous thickening, 



*143 



Phytopathology, 167 

 Phytophthora, 381, *382 

 Phytoteratology, 167 

 Picea, *482, *483, *495, 396 ; succini/era, 



98 



Picrasma, 614 



Pilobolus, 384 ; heliotropism, *276 

 Pilocarpine, 226 

 Pilocarpus, 614 

 Pilostyles, *230 

 Pilularia, *451 

 Pimento,, 634 

 Pimenta, 634 



Pimpinetta, *637, 640, 643 

 Pinaceae, 491 

 Pine, Pinus 

 Pinguicida, 237, 668 

 Pinks, Dianthus 

 Pinnate leaves, 33 

 Pinnularia, *11 

 Pinus, *481, *483, *494, *497 ; bordered 



pit, *66 ; medullary ray, *135, 140 ; 



sieve-tubes, *66 ; wood, *130, *132, 



*136 

 Piper, *553 ; ethereal oil, 79 ; vascular 



bundles, 124 



Piperaceae, 552 ; epidermis, 109 

 Piperinae, 552 

 Pistacia, 619 



Pisum, 609 ; tendrils, 44, *45 

 Pith, 117, 118 



