447] 



299 



References to the Flora are 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] 



?ough-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, [142J 



dissecta 42, [142] 



glaucophylla [142J 



diversifolia [142 J 



effusa 18, [143] 



fissa [145] 



fruticosa [144] 



glaucophylla [142] 



Hippiana 14, 25, 35, [143] 



diffusa [143] 



humifusa [142] 



lateriflora [142] 



leucocarpa [142] 



minutifolia [143] 



Monspeliensis [142] 



Norvegica hirsuta [142] 



paradoxa [141] 



Pennsylvanica arachnoidea. [143] 



strigosa 22, [143] 



propinqua 35, [143] 



pulcherrima 35, [143] 



Poverty-grass, bushy [60] 



long-awned [60] 



Prairie clover [1 60] 



slender white [160] 



violet [160] 



hairy [160] 



Prairie flora 12 



Prairie-grass [68] 



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



Prickly cereus [174] 



green-flowered [174] 



Prickly pear [175] 



brittle [175] 



Greene's [175] 



many-sided [175] 



red-flowered [175] 



western [175] 



Prickly poppy [126] 



hairy [126] 



white [126] 



Primrose [187] 



evening [178] 



Delavaux' [179[ 



scapose [1 79] 



tooth-leaved [180] 



white [178] 



narrow-leaved [187] 



Parry's 39, [187] 



rock [188] 



Primrose family [187] 



