247 
Moss, 185. 
Mulilenbergia, 30, 31. 
Muklenbergia glomerata, var sitiformis, 31. 
Mulgedium leucopbmum, 8. 
Musca domestica, 171. 
Muscaria racemosum, 162. 
Musk-melon, 202. 
Nasturtium palustre, 8. 
Negundo aceroides, 94,147. 
Norway spruces, 26. 
Nuphar advena, 146. 
Oak, 21, 72, 79, 90. 
Oak, dead limbs of, 90. 
Oak leaves, 79. 
Oak, living, bark of, 72. 
Oats, 42, 81,164,165,218. 
CEnotkera albicaulis, 190. 
(Enothera sinuata, 94. 
Oleander, stems of, 79. 
Onagracese, 194. 
Onion, 102. 
Open woods, 62. 
Opuntia Missouriensis, 81. 
Orange leaves, 154. 
Osage orange, 90. 
Oxytropis Lambert), 65, 83,190, 209. 
Oxytropis Monticola, 83. 
Pachytylus migratorius, 172. 
Paeony, 146. 
Panicum capillare, 94. 
Panicum virgatum, 161. 
Parietaria debilis, 190,191. 
Passiflora incarnata, 72. 
Peaches, 32,38,123,131. 
Peach tree, roots of, 199. 
Pears, 131. 
Pear tree, roots of, 199. 
Peas, 214. 
Pedicularis palustris, 162. 
Peltandra Virginica, 157. 
Pentstemon grandidorus, 161. 
Pepper-grass, 10. 
Persea, 21. 
Persea Carolinensis, 157. 
I 
Peucedanum cervaria, 162. 
Phacelia Menziesii, 190,191. 
Phalaris arundinacea, 30. 
Phanerogams, 218. 
Phaseolus lunatus, 222. 
Phaseolus vulgaris, 160. 
Phlox, 79. 
Phlox csespitosa, 66. 
Phlox caespitosa, var. condensatus, 83. 
Phlox divaricata, 79,151. 
Phlox Douglasii, 81. 
Phragmitis communis, 95. 
Physalis laneeolata, 161. 
Physalis pubescens, 161. 
Physostegia Virginiaua, 150. 
Phytoptus galls, 73, 86,134,117, 209. 
Picea vulgaris, 91. 
Pimpinella magna, 162. 
Pinus Austriaca, 162. 
Pinus Murrayana, 67, 83. 
Pirus Americana, 79. 
Pirus coronaria, leaves of, 68,94, 
Pirus malus, 19. 
Pisum (cult.), 190. 
Plautago eriopoda, 80. 
Plantago major, 9. 
Platanus, 51, 53, 55, 56, 57,113,181,184. 
Platanus occidentalis, 54,161. 
Platanus orientalis, 54. 
Plum, 38,123,176. 
Poa, 30, 31,192,193. 
Poa nemoralis, 162. 
Poa tenuifolia, 31, 84,192,193. 
Polemoniacese, 194. 
Polygala polygama, 154, 
Polygonum avicularo, 9,161,162. 
Polygonum convolvulus, 9. 
Polygonum dumetorum, 9. 
Polygonum Muklenbergii, 81. 
Polygonum ramosissimum, 161. 
Polypkylla fullo, 173. 
Polyporus picipes, old, 70. 
Polytaenia Nuttallii, 161. 
Populus angulata, 32. 
Populus angustifolia, 32,193. 
Populus balsamifera, 32,193. 
Populus candicans, 154. 
Populus monilifera, 32, 84,155,193. 
Populus tremuloides, 32, 80, 81, 82,83, 84,193. 
Potato, 7,158,178,199, 200, 202, 227. 
Potentilla, 80. 
Potentilla dissecta, 82. 
Potentilla Norvegica, 8. 
Potentilla Pennsylvania, 82. 
Prenanthes, 8,150. 
Prunus, 20,177. 
Prunus Padus, 41. 
Prunus Yirginiana, 81, 83, 84,193. 
Psoralea argopkylla, 95. 
Pumpkin vines, 201. 
Pyrola rotundifolia, 80, 145. 
Pyrola uniflora', 162. 
Quercus macrocarpa, 95. 
Quercus nigra, 141. 
Quercus palustris, 157. 
Quercus tinctoria, 94, 143. 
Quercus virens, 157. 
Radish, 203. 
Ranunculace®, 74,190,194. 
Ranunculus, (abortivus ?), 148. 
Ranunculus bulbosus, 104. 
Ranunculus Cymbalaria, 80, 81, 190. 
Ranunculus ficaria, 44,104. 
Ranunculus macrantkus, 190. 
Ranunculus repens, 83,190. 
Ranunculus sceleratus, 64,190. 
Rhamnus alaternus, 217. 
Rkamnus croceus, 217. 
Rheum officinale, 145. 
Rhododendron catawbiense, 149. 
Rhododendron maximum, 149. 
Rhus glabra, 134. 
Rhus toxicodendron, 83,144. 
Ribes, 81, 226. 
Ribes aureum, 161. 
Ribes cereum, 189. 
Ribes floridum, 80, 81, 83,148,189,194. 
ltibee nigrum, 194, 
