370 



PRACTICAL BOTANY. 



Plantain, Plantago, . 

 Platanthera, False Orchis, 

 Platan us, Plane-Tree, 

 Pleurisy -root, sp. of Asclepias, 

 Pluchea, Marsh-Pleabane, . 

 Plum, Prunus in part, . 

 Poa, Meadow or Spear-Grass, . 

 Podophyllum, May-Apple, 

 Podostemon, Kiverweed, . 

 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, . 

 Polypremum, .... 

 Polytaenia, . , . 



Pond-Spice, Tetranthera, 

 Pondweed, Potamogeton, . 

 Pontederia, Pickerelweed, 

 Poor Man's Weather- Glass, Anagallis, 

 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 Pock, 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, 



