312 



American Midland Naturalist Monograph No. 2 



Orbexilum 1 64 



Orchid 99, 100 



Orchidaceae 98 



Orchid Family 98 



Orchis 99 



Ornithogalum 94 



Orobanchaceae 232 



Orobanche 232 



Oryzopsis 60 



Osage-orange 1 12 



Osmorhiza 196 



Osmunda 34 



Osmundaceae 34 



Ostrya 108 



Otophvlla 230 



Oxalidaceae 171 



Oxalis 171 



Ox-eye Daisy 266 



Oxvbaphiis 122 



Oxycoccus 200 



Oxxigraphis 1 29 



Oxypolis - 198 



Oyster Plant 269 



Padus 1 58 



Panax 194 



Panicularia 51 



Panicum 63 



Pansy 188 



Papaver 1 35 



Papaveraceae 1 34 



Panefana ....1 13 



Parnassia 145 



Parnassiaceae 145 



Paronychia 122 



Parasela 164 



Parsley Family 194 



Parsnip 198 



Parthenium 259 



Parthenocissus 181 



Partridge-berry 236 



Partridge-pea 162 



Paspalum 62 



Pasque-flower 1 3 1 



Passiflora 188 



Passifloraceae 1 88 



Passion-flower 188 



Passion-flower Family 188 



Pastinaca 198 



Paulo wnia 233 



Pawpaw 126 



Pea 1 58 



Peach 1 57 



Pea Family 158 



Pear 1 55 



Pearlwort 124 



Pecan 105 



Pedicularis 23 1 



Pellaea 39 



Pellitory 113 



Peltandra 87 



Pencil -flower 168 



Peniophyillum 192 



Pennycress 143 



Pennyroyal 221 



Penstemon ...227 



Penthorum 145 



Peplis 189 



Pepo 241 



Peppercress 143 



Peppermint 223 



Pepper-vine 181 



Peramium 100 



Perideridia 196 



Perilla 223 



Periwinkle 206 



Persicaria 1 16 



Persimmon 203 



Perularia 99 



Peruvian Daisy 260 



Petalostemum 164 



Phacelia 2 1 3 



Phalaris 62 



Pharhiiis 2 1 



Phaseolus 169. 170 



Phegopteris 37 



Philadelphus 1 46 



Phleum 58 



Phlox 211 



Phlox Family 211 



Phoradendron 1 14 



Phragmites 54 



Phryma 234 



Phrymaceae 234 



Phyla 216 



Phyllanthus 1 75 



Physalis 224 



Ph\}salodes 224 



Ph\nocarpa 1 49 



Physocarpus 149 



Physostegia 219 



Phytolacca 122 



Pi I vtolaccaceae 1 22 



Pickerelweed 89 



Pickerelweed Family 89 



Picradenia 264 



Pigweed 119. 120. 121 



Pilea 1 1 3 



Pimpernel 202 



PlNACEAE 40 



Pine 40 



Pineapple-weed 266 



Pine Family 40 



Pinesap 199 



Pineweed 184 



Pink Family 123 



Pinweed 185 



Pinus 40 



Pipewort 88 



Pipewort Family 88 



