INDEX TO KEY OF FAMILIES AND GENERA 



145 



Pteris, 135. 

 Pterocactus, 101. 

 Pterocarpus, 95. 

 Ptcrocarya, 118. 

 Pteroreltis, 118. 

 Pterolobium, 95. 

 Pteronia, 107. 

 Pterospermum, 90. 

 Ptcrostylis, 123. 

 Pterostyrax, 109. 

 Ptychoccocus, 131. 

 Ptychoraphis, 131. 

 Ptychospcrma, 130. 

 Pueraria, 94. 

 Pulmonaria, 111. 

 Pultensea, 94. 

 Punica, 99. 

 PI-NICACE*, 82, 99. 

 Purshia, 97. 

 Puschkinia, 128. 

 Putranjiva, 118. 

 Puya, 126. 



Pynanthemum, 116. 

 Pycnostachys, 116. 

 Pyracantha, 96. 

 Pyrcnacantha, 85. 

 Pyrethrum, 107. 

 Pyrola, 108. 

 PYROLACEJE, 83, 108. 

 Pyrostegia, 113. 

 Pyrularia, 117. 

 Pyrus, 97. 

 Pyxidanthera, 109. 



Quamoclit, 111. 

 Quassia, 91. 

 Quekettia, 123. 

 Qucrcus, 119. 

 Quesnelia, 126. 

 Quillaja, 96. 

 Quisqualis, 98. 



Raclcrniachia, 113. 

 Radicula, 88. 

 Rajania, 123. 

 Kamonda, 114. 

 Randia, 103. 

 Rancvea, 131. 

 RA.NUNCULACE^E, 80, 86. 

 Ranunculus, 86. 

 Raphanus, 87. 

 Raphiolepis, 97. 

 Raphionacme, 110. 

 Rathbunia, 101. 

 Rauvvolfia, 110. 

 Ravcnala, 125. 

 Ravenia, 91. 

 Reevcsia, 90. 

 Rchmaimia, 113. 

 Reiucckia, 127. 

 Reinwardtia, 90. 

 Rrminthera, 123. 

 Renealmia, 125. 



K.M <la, 88. 



RESEDACE.E, 80, 88. 

 RESTIACE.E, 85. 

 Restio, 85. 

 Restrepia, 122. 

 Reynosia, 92. 

 Rhabdothamnus, 114. 

 RHAMNACE.E, 81, 92. 

 Rhamnella, 92. 

 Rhamnus, 92. 

 Rhuphidophora, 131. 

 Rhajiidophyllum, 129. 

 Rhapis 129. 



10 



Rhcedia, 89. 

 Rheum, 117. 

 Rhexia, 99. 

 Rhipidopteris, 135. 

 Rliipsalis, 100. 

 Kliizophora, 98. 

 RHIZOPHOKACE^E, 82, 98. 

 Rhodochiton, 112. 

 Rhododendron, 108. 

 Rhodoleia, 98. 

 Rhodomyrtus, 99. 

 Rhodorhiza, 111. 

 Rhodothamus, 108. 

 Rhodotypus, 97. 

 Rhoeo, 129. 

 Rhopaloblaste, 130. 

 Rhopalostylis, 130. 

 Rhus, 93. 



Rhynchauthus, 125. 

 Rhynchosia, 95. 

 Rhynchospora, 133. 

 Rhynchostylis, 123. 

 Ribes, 97. 



Ricinodendron, 119. 

 Ricinus, 118. 

 Rigidella, 124. 

 Rivina, 116. 

 Robinia, 95. 

 Rochea, 98. 

 Rodgersia, 98. 

 Rodriguezia, 123. 

 Rcettlera, 114. 

 Rohdea, 127. 

 Rollinia, 86. 

 Romneya, 87. 

 Romulea, 124. 

 Rondeletia, 103. 

 Rosa, 97. 

 ROSACES, 82, 96. 

 Roscheria, 130. 

 Roscoea, 125. 

 Rosmarinus, 115. 

 Rothrockia, 110. 

 Rottbct'llia, 134. 

 Roupala, 117. 

 Royena, 109. 

 Roystonea, 130. 

 Rubia, 103. 

 RUBLACE.E, 82, 102. 

 Rubus, 97. 

 Rudbeckia, 106. 

 Ruellia, 114. 

 Rulingia, 90. 

 Rumex, 117. 

 Rungia, 114. 

 Rupicola, 108. 

 Ruscus, 126. 

 Russelia, 112. 

 Ruta, 91. 



RUTACEJ3, 81, 90. 



Sabal, 129. 

 Sabbatia, 110. 

 SABIACE^E, 81, 92. 

 Saccharum, 133. 

 Saccolabium, 123. 

 Sagina, 89. 

 SaRittaria, 132. 

 Saint pa> ilia, 114. 

 SALICACE.E, 84, 119. 

 Salicornia, 116. 

 Salix, 119. 

 Salpichroa, 112. 

 Salpiglossis, 112. 

 Salpinga, 89. 

 Salsola, 116. 



Sal via, 115. 

 Salvinia, 136. 

 SALVINIACE^E, 85, 136. 

 Sambucus, 102. 

 Sanchezia, 114. 

 Sandersonia, 128. 

 Sanguinaria, 87. 

 Sanguisorba, 97. 

 Sanicula, 101. 

 Sansevieria, 127. 

 SANTALACE^E, 84, 117. 

 Santalum, 117. 

 Santolina, 106. 

 Sanvitalia, 106. 

 SAPINDACE/E, 81, 92. 

 Sapindus, 92. 

 Sapium, 119. 

 Saponaria, 89. 

 SAPOTACE.E, 83, 109. 

 Saraca, 95. 

 Sarcanthus, 123. 

 Sareocephalus, 103. 

 Sarcochilus, 123. 

 Sarcoeocca, 119. 

 Barcodes, 108. 

 Sarcopodium, 123. 

 Sargentodoxa, 87. 

 Sarracenia, 87. 

 SARRACENIACE.E, 80, 87. 

 Sassafras, 117. 

 Satureia, 116. 

 Satyrium, 123. 

 Sauromatum, 131. 

 Sauropus, 118. 

 SAURURACE.E, 84, 117. 

 Saururus, 117. 

 Saussurea, 107. 

 Saxifraga, 98. 

 SAXIFRAGACE^E, 82, 97. 

 Scabiosa, 103. 

 Scuevola, 85. 

 Scandix, 101. 

 Scaphosepalum, 122. 

 Scaphyglottis, 123. 

 Schaueria, 114. 

 Scheelea, 129. 

 Scheeria, 113. 

 Schefflera, 102. 

 Schima, 89. 

 Schinus, 92. 

 Schismatoglottis, 131. 

 Sohizaja, 135. 

 SCHIZ^EACE^E, 85, 135. 

 Schizandra, 86. 

 Schizanthus, 112. 

 Schizoeodon, 109. 

 Schizolobium, 95. 

 Schizopetalon, 88. 

 Schizophragma, 97. 

 Schizostylis, 124. 

 Schlimmia, 123. 

 Schlumbergera, 100. 

 Schomburgkia, 122. 

 Schotia, 95. 

 Schrankia, 94. 

 Sciadopitys, 120. 

 Scilla, 128. 

 Scindapsus, 131. 

 Scirpus, 133. 

 Sclerocarpus, 106. 

 Scolymus, 107. 

 Scopolia, 112. 

 Scorpiurus, 95. 

 Scorzonera, 107. 

 Scrophularia, 112. 

 SCROPHULARIACE.E, 83, 1 



Scutellaria, 115. 

 Scuticaria, 123. 

 Scyphanthus, 100. 

 Sebastiana, 119. 

 Secale, 134. 

 Sechium, 100. 

 Securinega, 118. 

 Sedum, 98. 

 SELAGINACE.E, 114. 

 Selaginella, 134. 

 SELAGINELLACE*:, 85, 134. 

 Selenia, 88. 

 Selenicereus, 101. 

 Selinum, 101. 

 Semecarpus, 92. 

 Semele, 126. 

 Sempervivum, 98. 

 Senebiera, 87. 

 Senecio, 107. 

 Sequoia, 120. 

 Serapias, 121. 

 Serenaea, 129. 

 Sericocarpus, 105. 

 Serissa, 103. 

 Serjania, 92. 

 Serratula, 105. 

 Sesamum, 114. 

 Sesbania, 95. 

 Seseli, 101, 

 Sesuvium, 101. 

 Setaria, 133. 

 Severinia, 91. 

 Seymeria, 113. 

 Shepherdia, 117. 

 Shortia, 109. 

 Sibbaldia, 97. 

 Sibirsea, 96. 

 Sibthorpia, 113. 

 Sicana, 100. 

 Sicyos, 100. 

 Sida, 90. 

 Sidalcea, 89. 

 Sideritis, 116. 

 Sideroxylon, 109. 

 Sievekingia, 123. 

 Sigmatostalix, 123. 

 Silene, 89. 

 Silphium, 106. 



SlMARUBACE,, 81, 91. 



Simmondsia, 119. 

 Sinningia, 113. 

 Sinofranchetia, 87. 

 Sinomenium, 86. 

 Sinowilsonia, 98. 

 Siphocampylus, 107. 

 Sisyrinchium, 124. 

 Sium, 101. 

 Skimmia, 91. 

 Smelowskia, 88. 

 Smilacina, 127. 

 Smilax, 126. 

 Smodingium, 93. 

 Sobolewskia, 87. 

 Sobralia, 122. 



SOLANACE^E, 83, 112. 



Solandra, 112. 

 Solan i mi. 112. 

 Soldanella, 109. 

 Solea, 88. 

 Solenanthus, 111. 

 Solenidium, 123. 

 Soiidago, 105. 

 Sollya, 88. 

 Sonchus, 107. 

 Sonerila, 99. 

 Sophora, 94. 



