INDEX 



581 



583 

 577 

 584 

 724 

 725 

 724 

 163 



666 

 622 

 622 

 622 

 622 

 623 

 623 



.622 



PORTULACACEAE 90 



90 



91. 



674 



674 



674 



676 



Shastensis 

 spergulariae- 



forme 

 viviparum 

 Watsoni 



FOLYPOGON 

 littoralis 

 Monspeliensis 



POMAi^iJAB 



PONTEDER- 

 .lACEAB 



POPULUS 

 alba 



angustifolia 

 balsamifera i 

 deltoides 

 tremuloides 

 trichocarpa 



PORTXTLACA 

 oleracea 



POTAMOGBTON 

 alpinus 

 amplifoltas 

 foliosus 

 Var. Californicus 676 

 heterophyllus 675 



lonchites 675 



natans 674 



Nuttalli 674 



pectinatus 676 



perfoliatus 675 



Var. Richardsonii 675 



praelongus 

 pulcher 

 pusillus 

 Robbinsii 

 zosteraefolius 

 POTENTILLA 

 Anserina 

 brevifolia 

 ciliata 



Drummondli 

 flssa 



flabelliformis 

 flabellifolia 

 fruticosa 

 g'racilis 

 glandulosa 

 glutinosa 

 lateriflora 

 millegrana 

 Monspeliensis 

 Newberryi 



675 

 674 

 676 

 676 

 675 

 175 

 173 

 178 

 175 

 177 

 176 

 178 

 178 

 179 

 178 

 176 

 175 

 177 

 177 

 176 

 177 



Paeifica 179 



reflexa 176 



rhomboidea 1<6 



rivalis 177 



villosa J7S 



Wrangelliana 176 



PRIMULACEAE 431 



PRIMULA 434 



Broadheadae 434 



Var. minor 434 



Cusickiana 43-. 



PROSARTES 658 



PRUNUS 161 



Oregana 161 



subcordata 161 



PSBUDOCYMOP- 



TERUS 258 



anisatus 258 



PSEUDOTSUGA 788 



Douglasii 788 



PSORALEA 141 



lanceolata 141 



melilotoldes 142 ' 



physodes 1 



Purshii 141 



PSILOCARPHUS 325 



brevissimus 326 



elatior 326 



tenellus 326 



Oreganus 326 



PSILONEMA 52 



calycinum 52 



PTEROSPORA 427 



Andromedea 428 



PTBROSTEGIA 576 



drymarioides 576 



PTILOUALAIS 390 



major 390 



nutans 390 



PTILOTRIA 388 



paniculata 389 



exigua 389 



tenuifolia 389 



virgata 389 



PUCCINBLLIA 754' 



angustata 754 



distans 754 



Lemmoni 754 



maritima 754 



PYROLACBAE 423 



PYROLiA 424 



aphylla i-2'> 



Var. paucifolia 425 



bracteata 425 



chlorantha 424 



elliptica 425 



minor 424 



picta 425 



