Index 



Potamogeton, 13 

 americanus, 13 

 Berchtoldi, 13 

 bupleuroides, 13 

 capillaceus, 14 

 crispus, 13 

 diversifolius, 14 

 epihydrus, 13 

 foliosus, 14 

 hybridus, 14 

 natans, 13 

 nodosus, 13 

 pectinatus, 14 

 perfoliatus, 13 

 pulcher, 13 

 pusillus, 13 

 Richardsonii, 13 

 Robbinsii, 14 

 Spirillus, 14 



POTAMOGETONACEAE, 13 



Potato, 227 

 Potentilla, 142 

 Poverty Grass, 33 

 Prenanthes, 283 



alba, 283 



altissima, 283 



autumnalis, 283 



serpentaria, 283 



trifoliolata, 283 



virgata, 283 

 Prickly Ash, 163 



Pear, 183 



Poppy, 127 

 Pride-of-India, 163 

 Primrose, Evening, 186 



Family, 202 

 Primtjlaceae, 202 

 Prince's Feather, 108 

 Privet, 205 

 Proserpinaca, 188 

 Prunella, 221 

 Prunus, 146 



americana, 147 



angustifolia, 146 



Avium, 147 



Cerasus, 147 



Chicasa, 146 



insititia, 146 



Mahaleb, 147 



maritima, 146 



Padus, 147 



pensylvanica, 146 



serotina, 146 



virginiana, 146 



Prunus, 147 



Psedera, 172 



Psilocarya, 53 



Psoralea, 151 



Ptelea, 163 



Pteridium, 3 



Pteris, 3 



Ptilimnium, 191 



Puccinellia, 20 



Pueraria, 160 



Pulse Family, 147 



Pumpkin, 249 



Purpletop, 25 



Purslane, 119 

 Common, 119 

 Marsh, 185 

 Sea, 113 



Putty Root, 93 



Pycnanthemum, 223 

 aristatum, 224 

 clinopodioides, 223 

 flexuosum, 224 

 incanum, 224 

 muticum, 224 

 setosum, 224 

 verticillatum, 224 

 virginianum, 224 



Pyrola, 195 



Pyrrhopappus, 283 



Pyrus, 138 



Pyrus, 138, 139 



Quaker Ladies, 245 



Quamoclit, 211 



Quassia Family, 163 



Quercus, 100 

 alba, 100 

 bicolor, 100 

 borealis, 101 

 coccinea, 101 

 falcata, 101 

 Fernaldii, 100 

 heterophylla, 102 

 ilicifolia, 101 

 imbricata, 102 

 lyrata, 100 

 macrocarpa, 100 

 marilandica, 102 

 Michauxii, 100 

 montana, 101 

 Muhlenbergii, 100 

 nigra, 101 

 Otisii, 102 

 palustris, 101 



(Quercus) 



Phellos, 102 



prinoides, 100 



Prinus, 100 



Prinus, 101 



rubra, 101 



stellata, 100 



subfalcata, 102 



velutina, 101 



virginiana, 101 

 Quillwort, 8 



Radicula, 131 

 Radish, 129, 130 

 Ragweed, 268 



Great, 268 



Low, 269 

 Ragwort, 277 



Golden, 277 



Woolly, 277 

 Ranunculaceae, 120 

 Ranunculus, 120 



abortivus, 121 



acris, 122 



ambigens, 120 



bulbosus, 122 



circinatus, 120 



delphinifolius, 120 



flabellaris, 120 



hispidus, 121 



laxicaulis, 121 



longirostris, 120 



oblongifolius, 121 



obtusiusculus, 120 



parviflorus, 122 



pensylvanicus, 121 



pusillus, 121 



recurvatus, 121 



repens, 121 



sceleratus, 121 



septentrionalis, 121 

 Raphanus, 129 

 Raspberry, 143 



Black, 143 



Purple-flowering, 143 

 Rattle Box, 149 

 Rattlesnake Plantain, 

 92 



Root, 283 

 Rattlesnake-weed, 284 

 Red Bay, 126 



Bud, 148 



Root, 87 



Top, 30 



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