447] 



INDEX 



299 



References to the Flora arc> in brackets f 1 



Sawatchense [106 



tenue microspermum [106 



unifolium [106 



viviparum [108 



Watsonii [106 



POLYPODIACEAE [49 



Polypodium [49 



hesperium 29, [49 



vulgare [49 



Polypody [49 



western [49 



Polypogon [63 



Monspeliensis [63 



Pomme blanche [160 



Pond lily, yellow 34, [125 



Pondweed 10, [55 



alpine [55 



fennel-leaved [56 



long-leaved [55 



leafy [56 



spiral [56 



various-leaved [56 



Pondweed family [55 



pontederiaceae [88 



Poplar [98 



balsam [98 



Poppy [126_ 



Mexican 13 



prickly [126 



rough-fruited [126 



Poppy family, [126 



Populus [98 



acuminata 12, 22, [98 



angustifolia.l2, 22, 24, 28, 37 [98 



aurea [98 



balsamifera 37, [98 



deltoides occidentalis [98 



occidentalis [98 



Sargentii 12,22,28, [98 



tremuloides 25,32,33, [98 



aurea [98 



Porcupine grass 13, [60 



greenish [60 



Lettermann's [61 



Nelson's [60 



Scribner's [60 



western [60 



Portulaca [114 



oleracea 45, [114 



retusa 45, [114 



Portulacaceae [113 



Potamogeton [55 



alpinus [55 



fluitans [55 



foliosus 10, [55 



heterophyllus 10, [56 



lonchites 10, [55 



pauciflorus [56] 



pectinatus 10, [56] 



rufescens [56] 



Spirillus 10, [56] 



Potentilla [142] 



arguta [144] 



concinna 32, [142] 



dissecta 42, [142] 



glaucophylla [142] 



diversifolia [142] 



eflfusa 18, [143] 



fissa^ [145] 



fruticosa [144] 



glaucophylla [142] 



Hippiana 14, 25, 35, [143] 



diffusa [143] 



humijusa [142] 



lateriflora [l42] 



leucocarpa [142] 



minutifolia [143] 



Monspeliensis [142] 



Norvegica hirsuta [142] 



paradoxa [141] 



Pennsylvanicaarachnoidea. [143] 



strigosa 22, [143] 



propinqua 35, [143] 



pulcherrima 35, [143] 



Poverty-grass, bushy [60] 



long-awned [60] 



Prairie clover [160] 



slender white [160] 



violet [160] 



hairy [160] 



Prairie fiora 12 



Prairie-grass [68] 



PRATENSES 17,18,24,27,31, 34 



Prickly cereus 



green-flowered 



Prickly pear 



brittle 



Greene's 



many-sided 



red-flowered 



western 



Prickly poppy 



hairy 



white 



Primrose 



evening 



Delavaux'. 



scapose 



tooth-leaved 



white 



narrow-leaved 



Parry's 39, 



rock 



Primrose family. 



[174] 

 [174] 

 [175] 

 [175] 

 [175] 

 [175] 

 [175] 

 [175] 

 [126] 

 [126] 

 [126] 

 [187] 

 [178] 

 [179[ 

 [179] 

 [180] 

 [178] 

 [187] 

 [187] 

 [188] 

 [187] 



