Pelvetia wrightii, 



- 



- 





184, 



190 



Penicillus, - 



- 





- 



- 



129 



— capitatus, 



- 



- 







124 



Pentstemon, 



- 





34, 



37. 44. 46 



, 5i 



— secundiflorus, 



- 



- 





- 



-43 



Petalostemon, 



- 





- 



- 



35 



Pteridium, - 



- 





- 



- 



39 



Phacelia glandulosa, 



- 



- 





- 



48 



Phormidium, 



- 





- 



- 



149 



Phyllitis, 



- 



- 





- 



6 



— fascia, 



- 





- 



- 



5 



Phlox, 



- 



- 





- 



37 



Physaria, 



- 





- 



- 



37 



— didymocarpa, 



- 



- 





- 



30 



Pithophora, 



- 





- 



- 149. 



173 



Pleurophycus, - 



- 



- 





200, 213, 



215 



Poa, 



- 





- 



- 



23 



Polygonum, 



- 



- 





- 24, 27 



. 30 



— bistortoides, 



- 





- 



- 



46 



Polytrichum, 



- 



- 





- 



45 



Populus tremuloides, 



- 





- 



- 



50 



Porphyra, 



- 



- 5 



, 9, 



io, 11, 17, 



183 



Postelsia, - 198, 201, 



204, 208, 



213. 



214 



, 216, 217, 



220 



Potentilla, 



- 



- 





- 



30 



Primula parryi, 



- 





- 



- 



46 



Prionitis angusta, 



- 



- 





- 



186 



Psilotum triquetrum, 



- 





- 



- 



170 



Pterygophora, 198, 200, 



201, 205, 



209, 



210 



. 211, 213, 



215 



Pulsatilla, 



- 



- 





32 



, 37 



— hirsutissima, 



- 





- 



- 



50 



Pyrola, 



- 



- 





46 



. 50 



Rafflesiaceae, 



- 





- 



- 



81 



Rhus rydbergii, 



- 



- 





- 



37 



— trilobata, 



- 





- 



- 



32 



Ribes, - 



- 



- 





- 32, 36, 37 



Riccia, 



- 





- 



- 



68 



Roripa, 



- 



- 





. . . 



27 



Rubus deliciosus, 



- 





- 



- 



38 



