BOTANICAL OBSERVATIONS ON THE AZORES. 219 
Phytolacca, 146. 
Picconia, (131). 
Picris, 126. 
Pimpinella, 116, (116). 
Pinardia, (123). 
Pinus, 169. 
Piptatherum, (161). 
Pittosporum, 96. 
Placodium, 204. 
Plagiochila, 187. 
Plagiothecium, 178. 
Plantago, 142. 
Plocamium, 190. 
Poa, (165), 166, (166), 167). 
Pogonatum, 180. 
Polycarpon, 99. 
Polyedrium, (196). 
Polygala, 97. 
Polygonum, 146. 
Polypodium, 174. 
Polypogon, 161. 
Polysiphonia, 190, 197, 198. ‘ 
Polystichum, (174). 
Polythrincium, 209. 
Polytrichum, 180, (180). 
Populas, 151, 207, 
Porella, 186. , 
Portulaca, 99. 
Potamogeton, 156, 189, 
Potentilla, 110. 
Poterium, 111. 
Protea, 82. 
Prunella, 141. 
Prunus, 109. 
Psathyrella, 206. 
Pteris, 171, (171). 
Pterocladia, 191. 
Pterogonium, 179. 
Ptychomitrium, (181), 
Puccinia, 207. 
Pygmaea, 199. 
Pyrenula, 206. 
Pyrethrum, (122), (123). 
Pyrus, 209. 
Pyxine, 204. 
Radula, 186. 
Ramalina, 201. 
Ramphidium, 184. 
Ranunculus, 91. 
Raphanus, 95. 
Rapistrum, 95. 
Reboulia, 188. 
Reseda, 96. 
Rhacomitrium, 182. 
Rhacotheca, (188). 
Rhamnug, 103. 
Rhaphidium, 195. 
Rhizopus, 208 
Rhodymenia, 190. 
Rhus, 103, 
Rhynchostegium, 178. 
Riccardia, 187. 
Richardia, 155. 
Ricinus, 148. 
Rivularia, 198. 
Roccella, 201. 
Romulea, 152, 
Rosa, 208. 
Rosmarinus, 141]. 
Rubia, 118. 
Rubus, 110, 207. 
Rumex, 146, 208. 
Ruscus, 153, 
Ruta, 103. 
Saccogyne, 186, 
Sagina, 98. 
Salix, 151. 
Salsola, 145. 
Sambucus, 118. 
Samolus, 131. 
Sanicula, 114. 
Santolina, 122. 
Sargassum, 191, 193. 
Sarothamnus, (104.) 
Scabiosa, 119. 
Scapania, 186. 
Scenedesmus, 196. 
Schizymenia, 189. 
Sciaromium, 178. 
Scilla, (152). 
Scirpus, 157, (158). 
Scleroderma, 206. 
Scleropodium, 179. 
Scolopendrium, 173. 
Scrophularia, 137. 
Scyphophorus, (200), (201). 
Selaginella, 177, 
Sempervivum, 112, 
Senebiera, 95. 
Senecio, 123, 207. 
Septoria, 209. 
Serapias, 151. 
Setaria, 160. 
Seubertia, (120). 
Sherardia, 119. 
Sibthorpia, 137, 
Sida, 101. 
Silene, 97. 
Sinapis, (94). 
Siphula, 200. 
Sisymbrium, 94, 
Smilax, 146, 153, 
Smyrnium, 115, 
Solanum, 134, (135). 
Solenostoma, (187). 
Solidago, 87, 120. 
Sonckus, 127. 
