466 
INDEX 
Passifloraceae, 369 
Passion Flower Family, 369 
Pathogens, 219 
Paullinia, 5 
Paullinia Cupana, 358 
Paulownia imperialis, 392 
Pea Family, 341 
Peach, 209, 338 
Pear, 338 
fruit of, 210 
stone cells of, 104 
Peat mosses, 286 
Pedaliaceae, 393 
Pedicel, 178 
Pedicularis, 392 
Peduncle, 178 
Peireskia, 37o, 371 
Pelargonium, 345 
capitatum, 346 
odoratissimum, 346 
Radula, 346 
Penicillium, 256 
brevicaule, 260, 261 
camemberti, 259, 260 
expansum, 260 
glaucum, 257, 258, 259 
roqueforti, 259 
Pentstemon, 189, 393 
Peony, 325 
Pepo, 209 
Pepper Family, 310 
Perianth, 185 
Periblem, 100, 122 
Pericambium, 37,124,126,127,128,140 
Pericarp, 202 
Pericladium, 167, 377 
Pericycle, 37, 140 
Periderm, 147 
Peridiolum, 279 
Peridium, 278 
Perigone, 183 
Perithecia, 265, 266 
Permanent mounts, preparation of, 20- 
30 
Peronosporales, 251 
Pertusaria, 281 
Petals, 185 
Petiole, 167, 168 
Petroselini Radix, 377 
Petroselinum, 377 
sativum, 377 
Petunia, 391 
Peziza, 256 
repanda, Fig. of, 256 
Pezizales, 256 
Pfeffer, 63 
Phaeophyceae, 242 
Phallales, 279 
Phanerogamia, 292 
Pharmaceutical Botany, defined, 2 
Phaseolus lunatus, structure of seed 
of, 217, 218 
Phaseolus multifiorus, 
cross-sections of root of. 126 
Phelloderm^ 147 
Philadelphus, 336 
Phloem, defined, 119 
internal, 146 
interxylary, 146 
intraxylary, 146 
parenchyma, 101 
Phloroglucin, 98 
Phoenix, 295 
sylvestris, 75 
Photogens, 219 
Photosynthesis, 40 
defined, 155 
Phragmidiothrix, 221 
Phragmites, 409 
Phycocyanin, 94 
Phycoerythrin, 94 
Phycophaein, 94, 242 
Phycomycetes, 247 
Phycoxanthin, 242 
Phyllotaxy, 156 
Physcia stellaris, Fig. of, 280 
Physiology, defined, 1 
Physostigma, 198, 344 
