INDEX 



625 



Poplar, Populus 



Poppy, Papaver 



Populus, *493, 495 ; section of bud, *37 



Poricidal dehiscence, 459 



Portulaca oleracea, 509 ; seed, 294 



Positive stimuli, 251 ; neliotropism, 252 ; 

 geotropism, 257 



Potamogeton, *483, 484 ; seed, 294 



Potash plants, 176 



Potassium in plants, 172, 173, 202 



Potato, Solamim tuberosum 



Potentilla, *451, 553, 555 



Poterium, 554 



Prickles, 99 



Primordial leaf, 29 ; utricle, 49 



Primrose, Primula 



Primula, 571 ; glandular hairs, *97, 98 ; 

 heterostyly, *286 



Primulaceae, *570, 571 



Primulinae, 569 



Privet, IAgustrum 



Procambium strands, 105 



Promeristem, 89 



Promycelium, 364 



Prophases, 62 



Prophylla, see Bracteoles 



Prosenchyma, 89 



Protandry, 285, 286 



Proteaceae, 194, 540 



Prothallium, 290, 397, 398, 405, 413, 431 



Protobasidia, *363 



Protococcoideae, 319, 320 



Protogyny, 285, 286 



Protomyces, 349, *350 



Protonema, *383 



Protophloem, 105, *106 



Protoplasm, 48, 50 ; active, 53, 54 ; in- 

 clusion of, 68 ; living, 177 ; move- 

 ment, 241, 244 



Protoplast, 52, 86, 242 



Protoxylem, 105 



Prunoideae, 553, 555 



Prunus, 553, 555, *556 ; spinosa, thorns, 

 26 ; cerasus, gum, 81 ; lenticles, 

 142 ; growth, 226 ; persica, attacked 

 by Exoascus, 352 



Psalliota, *372 



Pseudoparenchyma, 341 



Pseudoperianth, 388 



Pseudopodium, of Andraea, *395 ; of 

 Sphagnum, *396 



Psidium, 565 



Pterocarpi Lignum, 562 



Pteridophyta, 397 ; roots, 15, 43; bundles, 

 101, 105, 119; cells, 150, 153 



Pteris, *398, 404 ; vessels, 85, *86 ; 

 bundles, *106, *111 ; petiole, 116 ; 

 roots, *151 ; cretica, 279 



Pteroearpus santalinus, 125, 562 



Pnecinia, *364, *365, *366, 367 



Puff-balls, Lycoperdon 



Pvhnonaria, 578 



Pulque, 185 



Pulpa prunorum, 556 ; Tamarindorum, 



559 ; Colocynthidis, 594 

 Pulvinus, 30, 269 

 Pumpkin, Cucurbita Pepo, see also Glut- 



amin 

 Pwnica, Punicaceae, 564 

 Purslane, Portulaea 

 Pycnidia, of the Pyreiwmycetes, 356 ; 



Xfredineae, *366 ; Lichens, *380 

 Pycnospores, Pycnoconidia, see Pycnidia 

 Pyrenoids, 71 

 Pyrenolichenes, 380 

 Pyrenomycetes, 351, 355, 378 

 Pyrocystis, 223 

 Pyrola, Pyrolaceae, 569 

 Pythium, *346 

 Pyxidium, 459 



Qualitative reproduction, see Sexual 



Quantitative reproduction, see Vegetative 



Quassia, 535 



Quercus, *495, *496, 499 ; bud-scales, 33 

 vessels, 85 ; midsummer growth, 124 

 suber, cork, 140 ; bark, 141, *143 

 galls, 155 ; growth, 226 



Quillaja, 552, 555 



Quillwort, Isoetes 



Quince, Cydonia 



Raceme, 460, *461 



Racemose inflorescence, see Botryose 



Radial plants, 16, 453 ; walls, 149, see als 

 Actinomorphic 



Radicle, 46 



Radish, Raphanus 



Garden, Raphanus sativus 



Radix Althaeae, 531 ; Angelicae, 550 

 Arnicae, 599 ; Belladonnae, 582 

 Calumbae, 516 ; Gentianae, 575 

 Graminis, 482 ; Ipecacuanhae, 589 

 Lappae, 599 ; Levistici, 550 ; Liqui 

 ritiae, 562 ; Liquir. mundata, 562 

 Ononidis, 562 ; Pimpinellae, 550 

 Pyrethri, 599 ; Ratanhiae, 559 ; Rhei. 

 506 ; Sarsae, 468 ; Senegae, 534 

 Taraxaci, 599 ; Valerianae, 591 



Rafflesia, 566 ; Arnold/, 26, 43 



Rafflesiaceae, 566 ; reduction in leaves, 26, 

 209 



Ramenta, 402 



Rampion, Phyteuma 



Ranuneulaceae, 510 



Ranunculus, *450, *510, *511-*513, 514; 

 leaves, 31 ; bundles, 103, *104 ; cells, 

 92 ; Purshii, *236 



Rape, Brassica Napus (oleifera) 



Raphanus, *518, 519 



Raphe of the. IKatomeae, 313; of the 

 ovules, *430, 431 



3 c 



