144 



INDEX TO KEY OF FAMILIES AND GENERA 



Phyllodoce, lots. 

 Phyllostachys, 134. 

 Phymatodes, 135. 

 Physalis, 112. 

 Physaria, 88. 

 Physianthus, 110. 

 Physocarpus, 96. 

 Physoptyehis, 88. 

 Physosiphon, 123. 

 Physostcgia, 115. 

 Physurus, 122. 

 Phytelephas, 131. 

 Phyteuma, 108. 

 Phytolacca, 116. 

 PHYTOLACCACE/E, 84, 116. 

 Piaranthus, 110. 

 Picea, 120. 

 Picrasma, 91. 

 Pieris, 108. 

 Pigafetta, 131. 

 Pilea, 118. 

 Pilocarpus, 91. 

 Pimelea, 117. 

 Pimenta, 99. 

 PINACE.E, 84, 120. 

 Pinanga, 130. 

 Pinckueya, 103. 

 Pinellia, 131. 

 Pinguicula, 113. 

 Pinus, 120. 

 Piper, 117. 

 PIPERACE.E, 84, 117. 

 Piptadenia, 94. 

 Piptanthus, 95. 

 Pipturus, 118. 

 Piqueria, 105. 

 Piscidia, 94. 

 Pisonia, 116. 

 Pistacia, 92. 

 Pistia, 131. 

 Pisum, 94. 

 Pitcairnia, 126. 

 Pithecoctenium, 113. 

 Pithecolobium, 93. 



PITTOSPORACE.E, 81, 88. 



Pittosporum, 88. 

 Placea, 124. 

 Plagianthus, 90. 

 Plagiobothrys, 111. 

 Plagiospermum, 97. 

 Planera, 118. 

 PLANTAGINACE.E, 83, 116. 

 Plantago, 116. 



PLATANACEjE, 84, 118. 



Platanus, 118. 

 Platonia, 89. 

 Platycarya, 118. 

 Platycerium, 135. 

 Platyclinis, 122. 

 Platycodon, 107. 

 Platycrater, 97. 

 Platylepis, 123. 

 Platystemon, 87. 

 Platystigma, 87. 

 Platytheca, 88. 

 Plectocomia, 129. 

 Plectranthus, 115. 

 Plectronia, 103. 

 Pleione, 122. 

 Pleiocarpa, 111. 

 Pleiospermum, 91. 

 Pleurothallis, 122. 

 Plocaraa, 103. 

 Plukcnetia, 119. 

 PLUMBAGINACE.E, 83, 109. 

 Plumbago, 109. 



Plumeria, 110. 

 Poa, 134. 



Podachenium, 106. 

 Podalyria, 95. 

 Podocarpus, 120. 

 Podolcpis, 105. 

 Podophyllum, 87. 

 Podostigma, 110. 

 Pogonia, 122. 

 Pogostemon, 116. 

 Poinciana, 95. 

 Poivrea, 98. 

 Polanisia, 88. 



POLEMONIACE^E, 83, 111. 



Polemonium, 111. 

 Polianthes, 125. 

 Poliothyrsis, 88. 

 Pollia, 128. 

 Polyeycnis, 123. 

 Polygala, 88. 

 POLYGALACE^E, 81, 88. 

 POLYGONACE^E, 84, 116. 

 Polygonatum, 127. 

 Polygonum, 117. 

 Polymnia, 106. 

 POLYPODIACE.E, 85, 135. 

 Polypodium, 135. 

 Polypteris, 106. 

 Polyrrhiza, 123. 

 Polyscias, 102. 

 Polystachya, 122. 

 Polystichum, 136. 

 Pomaderris, 92. 

 Poncirus, 91. 

 Pontederia, 128. 



PONTEDERIACE.E, 85, 128. 



Ponthieva, 122. 

 Populus, 119. 

 Porana, 111. 

 Poranthera, 118. 

 Portenschlagia, 101. 

 Portulaca, 89. 



PORTULACACE^E, 81, 89. 



Posoqueria, 103. 

 Potamogeton, 132. 

 Potentilla, 97. 

 Poterium, 97. 

 Pothos. 131. 

 Pouteria, 109. 

 Premna, 115. 

 Prenanthes, 107. 

 Prestonia, 110. 

 Primula, 109. 

 PRIMULACACE/E, 83, 109. 

 Prinsepia, 97. 

 Prionium, 129. 

 Pritchardia, 129. 

 Proehnyanthes, 125. 

 Promenaja, 123. 

 Prosopis, 94. 

 Prostanthera, 115. 

 Protea, 117. 

 PROTEACE<E, 84, 117. 

 Prunus, 97. 



Pseuderanthemum, 114. 

 Pscudolarix, 120. 

 Pseudopanax, 102. 

 Pseudophomix, 131. 

 Pseudotsuga, 120. 

 Psidium, 98. 

 Psilostrophe, 107. 

 Psoralea, 95. 

 Psychotria, 103. 

 Ptseroxylon, 91. 

 Ptelea, 91. 

 Pteridium, 135. 



