Piptatherum, . 



PlSTIA^CEiE, 



Pisum, 



Plantagi'neje, 



Plantago, 



Plant.iin, . 



Plumbagi'neje, 



P6a, 



PoUOPHy'llEjE, 



Podophyllum, 



PodOSTEVmEjE, 



Podostemum, 



Pogonia, 



Poinsettia, 



Poke, 



Poke Tribe, 



PoLEMONIA^CEJE, 



Polemcmium, 

 Polyanthes, . 

 Poly'gala, 



PoLYGA^LEJE, . 

 PoLYGO\\EJE, 



Poly'gonum, . 



Polypdgon, 



Pcndweed, 



Pontederia, 



Pontede^rijE, 



Poppoose Root, 



Poppy, 



Portulaca, 



Portula^ce^:, 



Potamageton, 



Potato, 



■ , Sweet, 



Potentilla, 



Poterium, 



Pothos, 



Prenanthes, 



Prickly Pear, 



Primula, . 



Primula^ceje, 



Primrose, 



Primrose Tribe, 



Proserpinaca, 



Prunella, 



Psamma, . 



Psylocarya, 



Pulmonaria, 



Pumpkin, 



Purslane Tribe 



Purslane, 



Water, 



Pycn'inthemum, 

 Py'rola, . 

 Pyrola v ce,e, . 



Queria, . 



Radish, 



• , Horse, 



Ragweed, 

 Ranuncula^ce.*, 

 Ranunculus, . 

 Raphanus, 



INDEX. 









275 



Pare 



Page 



249 



Raspberry, ... 59 



226 



Rattle Box, 





62 



64 



Rattle Triee, . 









163 



114 



Rattlesnake Violet, 









201 



114 



Reed, . 









238 



114 



Reseda, . 









46 



115 



Restia^ce^:, . 









217 



246 



Rheum, . 









104 



32 



Rhexia, 









51 



33 



RniNANTHA^CE-aS, 









163 



105 



Rhinanthus, . 









163 



105 



Rhubarb, . 









104 



199 



Rhynchospora, 









256 



72 



Rib-grass Tribe, 









114 



100 



Rice, Mountain, 









249 



100 



— , Wild, 









248 



151 



Ricinus, 









72 



152 



Rocket, . 









35 



217 



Rock Rose Tribe, . 









80 



76 



Rosa, 









54 



76 



Rosa^ce^e, 









54 



101 



Rose, 









54 



101 



Rosemary, 









176 



233 



Rosmarinus, 









176 



224 



Rubia, 









143 



206 



Rubus, 









59 



206 



Rudbeckia, 









140 



41 



Rue Tribe, 









72 



30 



Rue, . 









73 



92 



Rumex, . 









103 



91 



Ruppia, 









224 



224 



Rush, 









. 203 



165 



, Bog, . 









256 



151 



Rush Tribe, 









202 



56 



Ruta, . 









73 



53 



Ruta^cejs, 









72 



221 



Rve, . 









251 



119 



— -, Wild, 









. 244 



46 











153 



Sabbatia, 







149 



153 



Saffron, . 







123, 195 



153 



Sage, . 







176 



152 



Sagina, 







90 



49 



Sagittaria, 









189 



159 



SaLICA^RIjE, 









50 



238 



Salicornia, 









99 



257 



Salsola, 









99 



185 



Saltwort, 









99 



112 



— , Black, . 









154 



91 



Salvia, 









176 



92 



Samolus, . 









. 154 



47 



Samphire, 









99 



182 



Sandwort, 









91 



106 



Sanguinaria, . 









30 



106 



•Sanguisorba, 



SANGUISo'RBEiE, 









53 

 53 



195 



Sanicle, . 



Falac 









19 

 45 



19 



34 



Sanicula, . 









35 



SaNTALA^CE-E, 









52 



142 



Saponaria, 









86 



21 



Sarraccnia, 









82 



25 



Sarrace^nie/e, . 









81 



34 



Satureja, 









183 



