430 



liSTDEX 



Pine, Coulter, 5 



Del Mar, 4 



Digger, 5 



Jeffrey, 4 



Knob-cone, 4 



Limber, 3 



Murray, 5 



Parry, 3 



Sugar, 3 



Tamarack, 5 



Torrey, 4 



Yellow, 4 

 Pine Family, 1 

 Pink Family, 130 

 Pinon, 4 

 Pinus, 2 

 Piperia, 86 

 Piptocalyx, 305 

 Piscaria, 212 

 Plagiobotrys, 305 

 Plane-tree, 176 

 Plantaginaceae, 343 

 Plantago, 344 

 Plantain, 344 

 Plantain Family, 343 

 Platanaceae, 176 

 Platanus, 176 

 Platystemon, 145 

 Plectritis, 350 

 Pluchea, 374 

 Plumbaginaceae, 277 

 Plumbago Family, 277 

 Poa, 44 . 

 Poaceae, 18 

 Poison Hemlock, 259 

 Polemoniaceae, 286 

 Polycarpon, 136 

 Polygala, 210 

 Polygalaceae, 210 

 Polygonum, 112 

 Polypogon, 32 

 Polypogonaceae, 101 

 Pondweed, 10 



Horned, 12 

 Pondweed Family, 10 

 Pop-corn Flower, 305 

 Poplar, 89 

 Poppy, Bush, 146 



California 



Matilija, 145 

 Poppy Family, 144 

 Populus, 89 

 Portulaca, 130 



PORTULACACEAE, 128 



Potamogeton, 10 

 Potato Family, 320 

 Potentilla, 179, 180 

 Primrose Family, 275 

 Primulaceae, 275 

 Prosopis, 187 

 Prunus, 185 

 Pseudotsuga, 5 

 Psilocarpus, 375 

 Psoralea, 201 

 Pterostegia, 102 

 Ptiloria, 408 

 Purslane, 130 

 Sea, 127 ^ 

 Purslane Family, 128 

 Pycnanthemum, 319 

 Pyrola, 270 

 Pyrolaceae, 269 



Quercus, 96 



Radicula, 156 

 Radish, 155 

 Ragweed, 378 

 Ragweed Tribe, 377 

 Ramona, 315 

 Ranunculaceae, 138 

 Ranunculus, 141 

 Raphanus, 155 

 Raspberry, 178 

 Rattle-weed, 203 

 Razoumofskya, 100 

 Rein-orchis, 86 

 Reseda, 164 

 Resedaceae, 164 

 Rhamnaceae, 221 

 Rhamnus, 221 

 Rhus, 218 

 Ribes, 172 

 Ricinus, 213 

 Roble, 97 



Rock-rose Family, 232 

 Romero, 312 

 Romneya, 145 

 Rosa, 183 



ROSACEAE, 177 



Rose, 183 

 Roubieva, 116 

 RUBIACEAE, 345 



Rubus, 178 

 Rumex, 110 

 Ruppia, 11 



