131 



Monkey Flower. 70. 

 ]\ronotropa, 64, 111. 

 Moomvort, 82. 

 Moon-flower, 82. 

 ?.Ioosewood, 10. 

 Morning Glory, 82. 

 Morus, 37. 



Mosses. 116. 117. 118. 

 :\[oth Mullein. 06. 

 Motherwort. 57. 

 Mountain Holly. 28. 

 Mountain Laurel, 38. 

 Mouse-ear Chiekweed, 



19. 

 Mudwort. 77. 

 Mugwort. 76. 

 ]Mulilenbergia, 81, 87, 



90, 102. 

 Mulberry. 37. 

 IMullein, 56. 

 ilullein Pink. 54. 

 Musci, 116. 

 ]\[usk Mallow. 55. 

 Mustard, 20, 29. 46. 

 Myosotis, 26, 37. 112. 

 Myrica, 10, 29, 115. 

 Myricacere. 115. 

 Myriophyllum, 68, 107. 

 Nabalus (Prenanthes) 



84. 

 Najadace^, 100. 

 Nasturtium, 20, 35. 

 Nemopanthus, 28, 105. 

 Nepeta, 11, 57, 113. 

 Nettle, 49, 72, 77. 

 New Jersey Tea. 61. 

 Nieandra. 77. 112. 

 Nine-bark. 44. 

 Nimble Will, 87. 



Night-flowering Catch- 

 fly. 44. 



Nightshade, 59, 70. 



Nodding Trillium, 28. 



Norway Spruce, 18. 



Nuphar (Nymphaea), 

 29. 



Nyctatiinacea^, 114. 



Nymphaea, 29, 103. 



Nymphoides, 48, 112. 



Nymphaeaeeffi, 103. 



Nyssa, 47, 108. 



Oak, 27. 



Oakesia. 19, 99. 



Oak Fern, 51. 



Oat, 41. 60. 



Oenothera. 33, 58. 108. 



Ohio Buckeye, 29. 



Old-witch Grass, 90. 



Oleaceae, 112. 



Onagracea^. 108. 



One-flowered Cancer- 

 root, 25. 



Onion, 34. 



Onoclea, 52, 97. 



Onopordum. 63. 110. 



Onosmodium. 56, 112. 



Ophioglossum. 52. 97. 



Ophioglossacefe, 97. 



Orache. 79. 



Orange Grass, 77. 



Orchard Grass. 41. 



Orchidacea:\ 98, 99. 



Orchis, 48, 73. 



Ornithogalum, 28, 99. 



Orobanchaces, 113. 



Orobanche, 25, 113. 



Osage Orange, 41. 



Osmorhiza, 33, 108. 



Osmunda, 29, 39, 97. 

 Osmundaeeffi, 97. 

 O.strya, 17, 115. 

 Oxalidaceffi, 105. 

 Oxalis, 34, 105. 

 Ox-eye Daisy, 32. 

 Oxybaphus, 93, 114. 

 Pa'ony, 37. 

 Painted Cup, 19. 

 Painted Trillium, 28. 

 Panax, 13, 108. 

 Panic Grass, 50, 80, 90, 



93. 

 Panicum, 50. 80, 90, 



101. 

 Pansy, 11. 

 Papaver, 53, 103. 

 Papaveraceas, 103. 

 Parsnip, 54. 

 Partridge Berry, 46. 

 Partridge Pea, 74. 

 Paspalum, 80, 101. 

 Pastinaca. 54. 108. 

 Pasture Thistle, 69 

 Paulownia, 30. 

 Peach, 21. 

 Peanut. 83. 

 Pear, 21. 

 Pearlwort. 19. 

 Pearly Everlasting, 75. 

 Pedicularis, 19. 113. 

 Peltandra, 39, 100. 

 Pennycress, 35. 

 Pennyroyal, 78. 

 Penthorum, 79, 107. 

 Pentstemon, 34, 57, 



113. 

 Peppergrass, 29, 35. 

 Peppermint, 78. 



