INDEX 



103 



Pimenta ofiScinalis, 82 



Pimpinella Anisum, 85 



Pinaceae, 93 



Pines, 92 



Pinites succinifer, 93 



Pinna, 67 



Pinnule, 67 



Pinus strobus, 92, 93 



palustris, 92, 93 



glabra, 92, 93 



echinata, 92, 93 



tasda, 92, 93 



sylvestris, 92, 93 

 Piperaceae, 72 

 Piper angustifolium, 72 



cubeba, 72 



methysticum, 72 



nigrum, 72 

 Piscidia erythrina, 78 

 Pistacia lentiscus, 77 

 Pistil, 46 

 Pith, 18 



Pitted trachea, 9 

 Pix Burgundica, 93 



Canadensis, 93 



Liquida, 93 

 Placenta, 47, 48 



definition; 47, 48 



arrangement, 47, 48 

 Placentation, 48 



basilar, 48 



central, 48 



free-central, 48 



parietal, 48 



sutural, 48 

 Plantj annual, 16, 17 



biennial, 17 



hairs, 29, 30 



morphology, i 



perennial, 17 

 Plasmodium, 50 

 Plastid, 3, 4 



plasm, 3 

 Plerome, iS, 21 

 Pleurococcus, 58 

 Plumule, IS 



Podophyllum peltatum, 79 

 Pokeweed Family, 75 

 PoUen, 46 

 Pollination, 48 



agents, 48 



class, 48 



cross, 48 



definition, 48 



self, 48 

 Polygalaceae, 82 

 Polygala Senega, 82 

 Polygamous, 42, 74 



Polygonaceas, 74 

 Polypetalae, 76 

 Polypodiaceae, 69 

 Polyporaceas, 63 

 Polyporus, 63 



Polytrichum commune, life history, 65 

 Pome, 53 



Pomegranate Family, 80 

 Poppy Family, 81 

 Populus, 73 

 Porella, 65 

 Potato, 88 



Primary medullary rays, 9 

 Prefloration, 40, 41 

 contorted, 40, 41 

 definition, 40, 41 

 induplicate, 40, 41 

 reduplicate, 40, 41 

 valvate, 40, 41 

 vexiUary, 40, 41 

 Prickle, 21 

 Protoplasm, 3 



Protoplasmic cell contents, 3 

 Protoplast, 3 

 Protophloem, 14, 26 

 ProthaUus, 67 

 Protonema, 64, 67 

 Protoxylem, 19, 26 

 Prunus amygdalus, 77 

 serotina, 77 

 Virginiana, 77 

 laurocerasus, 77 

 Pterocarpus santalinus, 78 



marsupium, 78 

 Pteridophyta, 66 

 Puccinia graminis, 6 2 

 Puflf Balls, 59, 63 

 Pulsatilla, 78 

 Punica Granatum, 85 

 Punicaceae, 85 

 Pyrenomycetales, 62 

 Pyrethri Flores, 91 

 Pyrethrum, 90 



Quassia amara, 83 

 Quercus infectoria, 73 



alba, 73 

 Quillaja saponaria, 77 



Race, 2 

 Raceme, 38 

 Rachis, 38 

 Radicle, 15 

 Ranunculaceae, 77 

 Red Algae, 4 

 Reserve starch, 59 

 Reticulate traches, 64 

 Rhamnaceae, 83 



