370 



PRACriCAL BOl'ANY 



Plantain, Plan ta go, . 

 Platanthera, False Orchis, 

 Platan us, Plane-Tree, 

 Pleurisy-root, sp. of Asclepias, 

 Pluchea, Marsh-Fleabane, . 

 Plum, Prunus in part, . 

 Poa, Meadow or Spear-Grass, 

 Podophyllum, May-Apple, 

 Podostemon, Riverweed, 



Pogonia, 



Poison Hemlock, Conium, . 



Poison Ivy, sp. of Rhus, 



Poison-Oak, Poison Ivy, 



Poison Sumach, sp. of Rhus, . 



Poke, Phytolacca, 



Polanisia, .... 



Polemonium, Jacob's Ladder, 



Polygala, Milkwort, 



Polygonatum, Solomon's Seal, 



Polygonella, .... 



Polygonum, Knotweed, 



Polymnia, Leaf-cup, 



Polypogon, Beard- Grass, . 



Poly prem urn, .... 



Polytaenia, 



Pond-Spice, Tetranthera, 



Pondweed, Potamogeton, . 



Pontederia, Pickerelweed, 



Poor Man's Weather- Glass, Anagall 



Poplar, Populus, . 



Poppy, Papaver, 



Populus, Poplar, Aspen, . 



Porcupine-Grass, sp. of Stipa, 



Portulaca, Purslane, 



Potamogeton, Pondweed, . 



Potentilla, Cinquefoil, 



Poverty-Grass, sp: of Aristida, 



Prairie Clover, Petalostemon, 



Prairie Dock, sp. of Silphium, 



Prickly Ash, Xanthoxylum, 



Prickly Pear, Opuntia, . 



Prickly Poppy, Argemone, 



Prim, Ligustrum, . 



Primrose, Primula, . 



Primula, Primrose, 



Prince's Feather, sp. of Amarantus, . 



Prince's Pine, sp. of Chimaphila, 



Prinos, Winterberry and Inkberry, . 



