INDEX. 



275 



Piptatherum, . 



PlSTIA^CE^, 



Pisum, 



Plantagi'neje, 

 Plantago, 

 Plantain, . 



PLUMBAGl'NEiE, 



Poa, 



Podophv'llejE, 

 Podopliy'llum, 



PoDOSTK.VMEiE, 



Podostemum, 



Pogonia, 



Poinsettia, 



Poke, 



Poke Tribe, 



Polemonia'ces:, 



Polemonium, 



Polyanllies, 



Poly'gala, 



Polyga'lejE, . 



P0I-YG0\n'EjE, 



Poly'gonum, . 

 Polypogon, 

 Ponilwecd, 

 Pontederia, 



PoNTEDE^RI^, 



Poppoose Root, 



Poppy, 



Portulaca, 



PoRTULA^CE^, 



Potamagcton, 

 Potato, 



. , Sweet, 



Potentilla,; . 



Poterium, 



Pothos, 



Prenanthes, 



Prickly Pear, 



Primula, . 



Primdla^ce^, 



Primrose, 



Primrose Tribe, 



Proserpinaca, 



Prunella, 



Psamma, . 



Psylocarya, . 



Pulmonaria, 



Pumpkin, 



Purslane^Tribe, 



Purslane, 



Water, 



Pycnanthemum, 

 Py'rola, . 



PYROLA^CEa:, . 



Queria, . 



Radish, 



, Horse, 



Ragweed, 

 Ranuncula^cea;, 

 Ranunculus, . 

 Raphanus, 



