244 



INDEX 



Perisperm, 12S 

 Peristome of mosses, 215 

 Perncttya flower (102) 

 Persistent, 61 



leaves, 176 

 Personate (109), 57 

 Petal, parts of (18) 

 Petaloid appendage (loo), 68 

 Petals, 32 



Petiolar glands, 175 

 Petiole, 26 



development of, 172 



forms of, 175 



for climbing (569) 

 Petrocoptis seed (385) 

 Phanerogamic botany, 19 

 Phanerogams compared with crypto- 

 gams, 207 

 Pharmaceutical botany, scope of, 19, 20 

 Pharmacognosy, 20 

 Phelloderm, 140 

 Phellogen (422), 140 

 Phloem-bundles in root (422), 142 

 Phlox flower (57), 46 

 Phores, S3 



Phyllanthus branch (460), 167 

 Phyllocladia (460), 167 

 Phyllodia (562), 195 

 Phyllotaxy (570-575), 196 



relation to flower-structure, 199 

 Phylogeny, 18 

 Physiological botany, 18 

 Physiology defined, 18 

 Phytography, 19 

 Phytomer (1), 23 



products of (1), 23 

 Picea fruit (360) 

 Pileus, 211 



Piliferous layer (416), 139 

 Pilocarpus leaf (509, 525) 

 Pilose, 178 1i 



Pine leaf (492) 

 Pinnae, 190 



Pinnate (549, etc.), 190 

 Pinnately compound (549, etc.), 190 



veined leaf (524), 186 

 Pinnatifid (538, 556), 188 

 Pinnules, 183, 190 

 Pinus pistil (174), 71 

 Piper style (181) 

 Piptoptera fruit (290) 

 Pistil, gymnospermous, 70 



parts of (9, 10), 31 



the, 29 

 Pistillate flower (9), 29 

 Pitcher plant (560), 192 

 Pith, 141, 146 

 Placenta (10), 32 

 Placentae, modifications of. 77 

 Plaited, 60 



Plantago leaf (481, 515, 527) 

 Plantain leaf (481, 515, 527) 

 Platypodium fruit (296) 

 Plerom (420), 138 



structures from, 141 



Plumose anther, 68 



stigma (209), 74 

 Plumule (405, 7;^, 133 

 Podophyllum rhizome (449) 

 Pollen, fixation of (275). 98 



grains (14), 30 



development of, 65 



tube (278), 99 



descent of (278), ICO 

 Polhnaria (140), 65 



Pollination and fertilization, chapter on, 

 90 



by birds, 93 



defined, 79, 89 

 Polhnia (135, 140), 65 

 Polycarpous, 158 

 Polycotyledons (406), 133 

 Polygahneae, 219 

 Polygamous flowers, 30 

 Polygonatum rhizome (450) 

 Polygonum leaf (519) 

 Polypetalous, 53 

 Polysepalous, 53 

 Polystelar stems, 150 

 Pome (308), 119 

 Ponthiera pollinia (140) 

 Poppy fruit (358), 125 

 Pores, dehiscence by (328, etc.), 66 

 Position obscured, 42 

 Posterior side of flower, 41 

 Potaha style (186) 

 Potato (446) 



Potentilla, flower of (45, 46) 

 Poterium leaf (488) 

 Praefloration (120-125), 59 

 Praefoliation, 169 



Preservation of plants, chapter on, 226 

 Prickly pear (281) 

 Primary bundles of stem, 146 



leaf (466) 



root, 145, 158 



stem, 162 

 Primine (241, etc.), 79 

 Primordial leaf (466) 

 Prismatic perigone (94), 54 



style (183) 

 Procumbent stem, 165 

 Produced base (516), 184 

 Proliferation, 200 

 Propagation by cuttings, 25 



by nodes (2), 25 



vegetative, 25 

 Prosopis fruit (353) 

 Protection of fruit, 110 



to seeds, 110 

 Proterandry (269, 270), 94 

 Proterogyny, 94 

 Protonema, 214 

 Prunus flower (58) 



leaf (490) 

 Pseudima disk (260) 

 Pseudocarp, 105 

 Psorospermum (38) 

 Psyllocarpus fruit (325) 

 Pteridophyte, 215 



