296 



[444 



References to the Flora are in brackets [ 1 



micrantha 25, [61 



Osmorrhiza [182 



longistylis 23, [182 



obtusa 23, [182 



OXALIDACEAE [163 



Oxalis stricta [163 



Oxeye daisy [246 



common [246 



Oxypolis [183 



Fendleri 33, 37, [183 



Oxyria [105 



digyna 41, [105 



Oxytropis deflexa [158 



Lamberti [159 



mulliceps [158 



minor [158 



sericea [159 



splendens Richardsonii [159 



Oyster plant [255 



Ozomelis [137 



stenopetala [137 



Pachylobus [179 



hirsutus [179 



macroglottis [179 



montanus [179 



Paint brush [215 



Painted cup 18, 27, [215 



Arapahoe [216 



cockscomb [216 



confused [216 



entire-leaved [216 



lance-leaved [216 



Rhexia-leaved [216 



subentire [216 



sulphur [216 



toad-flax-leaved [215 



filiform [215 



western [216 



yellow [216 



PALUDOSAE 31, 32 



Paludose society 10 



Palustres 10 



Palustrous flora 10, 37 



Pandanales [55] 



Panic-grass [57] 



Scribner's [58] 



Tennessee [58] 



Panicularia [72] 



Americana 11, [73] 



borealis 11, [73] 



Holmii 28, [73] 



nervata 11,28, [72] 



Panicum [57] 



capillare 44, [57] 



agreste [58] 



occidentale [58] 



Crus-galli [57] 



sanguinale [57] 



scoparium [58] 



Scribnerianum [58] 



Tennesseense [58] 



virgatum 14, [58] 



Papaver [126] 



Argemone 46, [126] 



Papaveraceae [126] 



Papaverales [126} 



Parasitic plants 43 



PARASITICALES 43 



Parasites 43 



Parietaria [102] 



obtusa 22, [102] 



Pennsylvanica 22, 30, [102] 



Parnassia [139] 



fimbriata 33, 37, [139] 



Parnassiaceae [139] 



Parnassus, grass of [139] 



Paronychia [112] 



Jamesii 15, [112] 



pulvinata 41, [112] 



Parsley [184J 



Gray's ' [184] 



hemlock [184] 



Parsley family [181] 



Parsley-fern [50] 



rock [50J 



Parsnip [184] 



common [184] 



cow [184] 



water [183] 



Parthenocissus vitacea [169] 



Pasque flower [121] 



American [121] 



pink [121] 



Pastinaca [184] 



sativa 45, [184] 



Peach family [151] 



Pear, prickly [175] 



Peraly everlasting [241] 



false [241] 



subalpine [241] 



Pedicularia [218] 



Grayi 32, 35, [218] 



Parryi 40, [218] 



procera [218] 



racemosa 32, [218] 



scopulorum 42, [218] 



Pectianthia [136] 



pentandra 33, 34, 37, [136] 



Pellitory [102] 



obtuse-leaved [102] 



Pennsylvania [102] 



Penny grass [127] 



Colorado [127] 



field [127] 



