Oxycoccos, 209. 
Oxyria, 274. 
Oxytropis, 78. 
Peonia, 11. 
Panicum, 377. 
Papaver, 13. 
Papaveraceee, 12, 
Parietaria, 285. 
Paris, 302. 
Parnassia, 38. 
Paronychiacex, 118. 
Pastinaca, 143. 
Pedicularis, 236. 
Peplis, 112. 
Peristylus, 309, 310. 
Petasites, 165. 
Petroselinum, 136. 
Peucedanum, 142. 
Phalaris, 378. 
Phelipea, 228. 
Phleum, 378. 
Phragmites, 384. 
Phyliitis, 414. 
Phyllodoce, 208. 
Physospermum, 147. 
Phyteuma, 201. 
Picris, 188. 
Pilularia, 417. 
Pimpinella, 138. 
Pimpinella, 137. 
Pinguicula, 256. 
Pinus, 301. 
Pisum, 86. 
Plantaginacee, 262. 
Plantago, 263. 
Platanthera, 310. 
Plumbaginacee, 261. 
Poa, 389. 
Poa, 396. 
Polemoniacex, 215. 
Polemonium, 216. 
Polycarpon, 120. 
Polygala, 38. 
Polygalacez, 38. 
Polygonacez, 271. 
Polygonum, 274. 
Polygonum, 277. 
Polypodium, 408. 
Polypogon, 381. 
Polystichum, 411. 
Populus, 297. 
Portulacezx, 118. 
INDEX. 
429 
Potamogetonacex,340. Samolus, 260. 
Potamogeton, 340. 
Potentilla, 90. 
Poterium, 88. 
Prenanthes, 189. 
Primula, 258. 
Primulacez, 257. 
Prunella, 249. 
Prunus, 87. 
Psamma, 383. 
Pteris, 415. 
Pteris, 408. 
Pulegium, 246. 
Pulicaria, 168. 
Pulmonaria, 221. 
Pyrethrum, 172. 
Pyrola, 209. 
Pyrola, 210. 
Pyrus, 110. 
Quercus, 300. 
Radiola, 64. 
Ranuculacez, 1. 
Ranunculus, 5. 
Raphanus, 32. 
Reseda, 32. 
Resedacee, 32. 
Rhamnacee, 66. 
Rhamnus, 66. 
Rhinanthus, 236. 
Rhodiola, 122. 
Rhynchospora, 348. 
Rhytispermum, 222. 
Ribes, 124. 
Robertsonia, 125. 
Roemeria, 14. 
Rosa, 107. 
Rosacee, 84. 
Rottboellia, 402. 
Rubia, 155. 
Rubiacez, 151. 
Rubus, 92. 
Rumex, 272. 
Ruppia, 344. 
Ruscus, 319. 
Sagina, 46. 
Sagittaria, 336. 
Salicornia, 268. 
Salix, 288. 
Salsola, 266. 
Salsola, 266. 
Salvia, 246. 
Sambucus, 149. 
Sanguisorba, 88. 
Sanicula, 135. 
Santalacex, 278. 
Saponaria, 43. 
Sarothamnus, 70. 
Saussurea, 179, 
Saxifraga, 125. 
Saxifragacez, 125. 
Scabiosa, 158. 
Scandix, 145. 
Schedonorus, 396, 397. 
Scheuchzeria, 336. 
Schoberia, 266. 
Scheenus, 347. 
Scilla, 322. 
Scilla, 326. 
Scirpus, 349. 
Scirpus, 352. 
Scleranthus, 121. 
Sclerochloa, 393. 
Scolopendrium, 415. 
Scolopendrium, 415. 
Scrophularia, 234. 
Scrophulariacee, 229. 
Scutellaria, 248. 
Sedum, 122. 
Selaginella, 419. 
Selinum, 142. 
Sempervivum, 124. 
Senebiera, 31. 
Senecio, 177. 
Senecio, 176. 
Serrafalcus, 398 
Serratula, 180. 
Serratula, 180. 
Seseli, 142. 
Sesleria, 385. 
Setaria, 377. 
Sherardia, 151. 
Sibbaldia, 89. 
Sibthorpia, 238. 
Silaus, 141. 
Silene, 43. 
Silenez, 41. 
Silybum, 185. 
Simethis, 325. 
Sinapis, 25. 
Sinapis, 25, 26. 
Sison, 137. 
Sison, 137. 
Sisymbrium, 23. 
