( 245 ) 
Oxys, 115. 
Panicum, 183. 
Paspalum, 183. 
Petasites, 33. 
Phalaris, 180. 
Phelipæa, 58, 59. 
Phwnixo pus, 19. 
Phucagrostis, 201. 
Picris, 20. 
Plantago, 69. 
Poa, 186, 187. 191, 192, 220. 
Pollichia, 65. 
Polypodium, 204, 205. 
Polystichum, 205. 
Potentilla, 97. 
Prenanthes, 19. 
Prunella, 63. 
Prunus, 99. 
Psamma, 152. 
Pulegium, 60. 
Pulicaria, 33. 
Pyrethrum, 30, 31. 
Pyrus, 91. 
Ranunculus, 119. 
Rhynchospora, 176. 
Roripa, 127. 
Rottboellia, 194, 195. 
Sabulina, 139. 
Sagina, 141, 142. 
Santolina, 31. 
Sarothamnus, 107. 
It 
Satyrium, 162. 
Scandix, 82, S3. 
Schoberia, 141. 
Schœnodorus, 191,492. 
Scilla, 166. 
Sclerochloa, 187,192. 
Scleropoa, 192. 
Scorodonia, 66. 
Selinum, 81,255. 
Senebiera, 134. 
Senecio, 33. 
Serapias, 162. 
Serrafalcus, 189, 190. 
Serratula, 23. 
Seseli, T1, 78. 
Setaria, 179. 
Silene, 137. 
Sison, 76, 77, 78. 
Sisymbrium, 127, 128, 432. 
Sium, 76, 77,78. 
Spartium, 107. 
Specularia, 31. 
Spergella, 142. 
Spirodela, 197. 
Stachys, 63. 
Statice, 69. 
Sturmia, 180. 
Suæda, 147. 
Succisa, 33. 
Syringa, T2. 
Teesdalit, 130. 
Telmalophace, 197. 
Tephroseris, 27. 
34 
