234 
Spring Flora of Oklahoma 
Plantain-leaf Everlasting -194 
Platanacese — - 61 
Platanus_ _ 61 
Plane-tree Family - 61 
Platte Milk Vetch._ 19 
Pleiotamia — -123 
Poinsettia_ _ 95 
Poison Ivy _ 97 
Poison Oak _ 98 
Polemoniacese---- 140 
Polygonum --.— 36 
Polygonacese__ 34 
Polygonatum — - 10 
Polygalaccse _;—;•- 88 
Polygala-- 88 
Polypremum _ 132 
Populus__ 19 
Poppy Family _:--.--— 48 
Poppy, White Prickly _ 48 
Poppy, Leafy White Prickly- 48 
Pope’s Sand Parsley -125 
Portulacacese _ 39 
Potato Family _156 
Prairie Acacia - 65 
Prairie Apple - 77 
Prairie Cat’s-foot _.-194 
Prairie Gone Flower -197 
Prairie Mesquite _ 67 
Prairie Ragwort -204 
Primulacese__127 
Prickly Ash _ 88 
Primrose Family _127 
Prosopis — - 67 
Prunus__:_1_ 64 
Prunella _ 153 
Psoralea — -_- 75 
Ptelea__ 88 
Ptilinium__125 
Purplish Cudweed _194 
Purslane Family _ 39 
Purple-flowered Ground Cherry _15S 
Purple Lemon Monarda _155 
Purple Poppy-Mallow ___109 
Purslane Speedwell _165 
Quercus 
23 
