364 



INDEX. 



Papilionaceae (pa-pil-i-o-na'ce-a:), 



269 

 Parasitic fungi (nutrition of), 87, 88 

 Parmelia (par-me'li-a), 311, 312 

 Pea, 270 

 Pea family, 269 

 Peltandra (pel-tan'dra), 205 

 Pericarp, 229, 230 

 Perigynous, 222, 223, 265, 266 

 Perisperm, 208, 210, 212 

 Perithecium (per-i-the'ci-um), 136- 



138 

 Personatse (per-so-na'tae), 277 

 Petaloidese (pet-a-loi'de-se), 236 

 Phyllotaxy, II 

 Pistil, 197, 198, 203, 206 

 Pisum (pi'sum), 270 

 Plant substance, 81, 83 

 Pleiochasium (plei-o-cha'si-um), 

 Plum family, 266 

 Pollination, 192, 193, 205, 241 

 Polycarpicse (pol-y-car'pi-cse), 256 

 Polypodium (pol-y-po'di-um), 155 

 Polytrichum, 149 

 Pomaceas, 267 

 Pome, 230 

 Pneumatophore (pneu-mat'o-phore), 



3 2 7 

 Poricidal, 230 

 Prickly lettuce, 295 

 Primrose, 224 

 Progeotropism (pro-ge-ot'ro-pism), 



108 

 Prothallium (pro-thall'i-um), 203-207 ; 



ferns, 166-170 

 Protonema (pro-to ne'ma), 169 

 Protoplasm (pro'to-plasm), 15-27 ; 



movement of, 26 

 Prunus, 267 

 Pteris (pter'is), 170 

 Puccinia fpuc-cin i-a), 129, 130 

 Purple trillium, 231, 232 

 Pyrus, 269 

 Pyxidium, pyxis, 230 



Quercus (quer'cus), 252 

 Quillwort, 180-183 



Raceme, 227 



Ranunculaceas (ra-nun-cu-la'ce-ae), 



256-258 

 Raphe, 207, 210 

 Raspberry, 206 



Rattlesnake-weed, 280 

 Red rust, 129-132 

 Reforestation, 300-304 

 Relationships, 225, 232 

 Respiration, 94-101 

 Rhizome, 200 



Rhizopus (rhi'zo-pus), 126-128 

 Rhododendron (rho-do-den'dron), 



3 2 9 

 Rhceadinae (rhce-a-din'se), 259 

 Root, 220 



Root hairs, 15-18, 39-44 

 Root pressure, 50, 51 

 Root-stock, 219 

 Rosacese (ro-sa'ce-ee), 265 

 Rose family, 265 

 Rosiflorse (ro-si-flo'rae), 265 

 Rubus, 266 

 Runners, 219 



Sagittaria, 306, 309 



Salicaceae (sal-i-ca'ce-se), 250 



Salix, 251 



Samara, 256 



Sand dunes, 300, 301 



Schizocarp, 230 



Schrbphulariaceae (schroph-u-la-ri-a'- 



ce-ae), 277 

 Sea-wrack, 217 

 Seed, 208, 210 

 Seed distribution, 292 

 Seed (germination), 1-6 

 Seedlings, 210, 216 

 Septicidal, 230 

 Sexual organs; vaucheria, 1 22-124; 



ferns, 1 70-173; angiosperms, 205- 



207 

 Shepherd's purse, 259 

 Silique, 230 

 Silkweed, 296, 297 

 Skunk's cabbage, 243 

 Solomon's seal, 237 

 Spadiciflorse (spa-di-ci-flo'rse), 243 

 Spadix, 227 



Spathyema (spath-y-e'ma), 243 

 Species, 231 

 Spermatozoids (sper-mat'o-zoids), 



122, 123, 142, 171, 172 

 Sperm cell, 204, 205 

 Sphagnum, 324 

 Spike, 227 

 Spikelet, 247-249 

 Spines, 219 



