252 FOUNDATIONS OF BOTANY 
Nymphea, 76. 
Nympheacee, 75. 
Nyssa, 164. 
Oak, 57, 58, 59. 
Oakesia, 33. 
Obolaria, 177, 178. 
(Enothera, 156. 
CEnotheraceex, 156. 
Oleacez, 175. 
Oleander, 180. 
Olive Family, 175. 
Onion, 34. 
Opuntia, 154, 155. 
Orange, 133. 
Orange Grass, 149. 
Orange, Osage, 62. 
Orchidacee, 46. 
Orchis Family, 46. 
Ornithogalum, 37. 
Orobanchacee, 208. 
Osage Orange, 62. 
Osmorrhiza, 160. 
Ostrya, 52. 
Oxalidaceex, 131. 
Oxalis, 131. 
Peonia, 78. 
Peony, 78. 
Paint-brush, 205. 
Painted Cup, 205. 
Pansy, 151. 
Papaver, 91. 
‘Papaveracez, 89, 90. 
Papert Mulberry, 62. 
Pappoose Root, 85. 
Parsley Family, 158. 
Parsnip, 161. 
Partridge Berry, 214. 
Pasque Flower, 80. 
Passiflora, 151, 152. 
Passifloracex, 151. 
Passion-flower, 151, 152. 
Passion-flower Family, 151, 
Pastinaca, 161. 
Pawpaw, 88. 
Pawpaw Family, 88. 
Pea, 129. 
Pea Family, 117-119. 
Peach, 116. 
Pear, 108. 
Pecan, 50. 
Pedicularis, 206. 
Pelargonium, 130, 131. 
Pennywort, 178. 
Pentstemon, 203, 204. 
Peony, 78. 
Pepper-and-salt, 160. 
Peppergrass, 94. 
Pepper Root, 97. 
Periwinkle, 179. 
Persimmon, 174. 
Petunia, 201. 
Phacelia, 188. 
Philadelphus, 103. 
Phlox, 185, 186. 
Phlox Family, 185. 
Phoradendron, 63, 64. 
Phyllocactus, 155. 
Physocarpus, 107. 
Phytolacca, 69. 
Phytolaccacee, 69. 
Picea, 16. 
Pickerel Weed, 28, 29. 
Pickerel-weed Family, 28. 
Pignut, 51. 
Pimpernel, 174. 
Pine, 14, 15, 16. 
Pine Family, 13. 
Pine-sap, 166. 
Pine-weed, 149. 
Pink, 74, 75, 167. 
