Parnassia, 38. 
Paronycliiacea;, 120. 
Pastinaca, M l. 
Pedicularis, 235. 
Peplis, 113. 
Peristylas, 311. 
Petasites, 167. 
Petroselinum, 137. 
Pcuceclamim, 143. 
Phalaris, 377. 
Phelipcea, 228. 
Phlcum, 378. 
Phragmites, 383. 
Phyllitis, 414. 
Phyllodoce, 207. 
Physospermum, 148. 
Phyteuma, 201. 
Picris, 190. 
Pilularia, 417. 
Pimpinella, 138. 
Pimpinella, 137. 
Pinguicula, 255. 
Pimis, 303. 
Pisum, 86. 
Plantagineae, 262. 
Plantago, 262. 
Platanthera, 311. 
Plumbaginea;, 260. 
Poa, 389. 
Poleraoniaceae, 214. 
Polemonium, 215. 
Polycarj)on, 121. 
Polygala, 38. 
Polygaleae, 38. 
Polygonaceae, 270. 
Polygonum, 273. 
Polygonum, 276. 
Polypodium, 408. 
Polypogon, 381. 
Polystichum, 411. 
Populus, 298. 
Portulaceae, 119. 
Potamogetonem, 341. 
Potamogetoii, 341. 
Potentilla, 94. 
Poterium, 92. 
Prenanthes, 190. 
Primula, 257. 
Primulaceae, 256. 
Prunella, 248. 
Prunus, 89. 
Psamma, 383. 
INDK.X. 
Ptcris, 415. 
Pterin, 408. 
Pulicaria, 169. 
Pulmonaria, 220. 
Pyrethrum, 173. 
Pyrola, 208. 
Pyrola, 209. 
Pyrus, 111. 
Quercus, 300. 
lladiola, 67. 
Rammculace®, 1. 
Ranunculus, 5. 
Raphanus, 32. 
Reseda, 33. 
Resedaceae, 32. 
Rhamneae, 69. 
Rliamnus, 69. 
Rhinanthus, 235. 
Rhodiola, 122. 
Rliynchospora, 348. 
Rhytispermum, 221. 
Ribes, 125. 
Robertsonia, 126. 
Roemeria, 13. 
Rosa, 107. 
Rosaceae, 87. 
Rottboellia, 402. 
Rubia, 156. 
Rubiaceae, 152. 
Rubus, 96. 
Rumex, 271. 
Ruppia, 345. 
Ruscus, 321. 
Sagina, 47. 
Sagittaria, 337. 
Salicornia, 267. 
Salix, 287. 
Salsola, 265. 
Salsola, 265. 
Salvia, 245. 
Sambucus, 151. 
Samolus, 260. 
Sanguisorba, 92. 
Sanicula, 135. 
Santalaceae, 277. 
Saponaria, 43. 
Sarothamnus, 73. 
Saussurea, 180. 
Saxifraga, 126. 
Saxifrageae, 126. 
Scabiosa, 159. 
Scandix, 146. 
Schedonorus, 397. 
Scbeucbzeria, 337. 
Sclioberia, 265. 
Schocnus, 348. 
Scilla, 324. 
Scilla, 327. 
Scirpus, 350. 
Scirpus, 353, 
Scleranthus, 121. 
Sclerochloa, 392. 
Scolopeudrium, 414. 
Scolopendrium, 414. 
Scrophularia, 233. 
Scrophularineae, 229. 
Scutellaria, 247. 
Sedum, 122. 
Selaginella, 418. 
Selinum, 143. 
Sempervivum, 124. 
Senebiera, 31. 
Senecio, 178. 
Senecio, 178. 
Serrafalcus, 397. 
Serratula, 186. 
Serratula, 180. 
Seseli, 142. 
Sesleria, 384. 
Setaria, 377. 
Sherardia, 152. 
Sibbaldia, 93. 
Sibthorpia, 237. 
Silaus, 142. 
Silene, 44. 
Sileneae, 41. 
Silybum, 186. 
Sinapis, 25. 
Sinapis, 25, 26. 
Sison, 137. 
Sison, 137. 
Sisymbrium, 23. 
Sisymbrium, 24. 
Sisyrinohium, 317. 
Sium, 139. 
Slum, 137, 138. 
Smyrnium, 148. 
Solanaceae, 223. 
Solanum, 224. 
Solidago, 168. 
Sonchus, 193. 
Sonchus, 194. 
Sparganium, 339. 
Spartina, 383. 
