INDEX. 



253 



Pectis, 148. 



Pedicularis, 141. 



Pentstemon, sp. nov., 79, 161, 200. 



; segregate, 223. 



Persiearia, American, 24. 



amphibious, 24, 26. 



Andrews on, 105, 110. 



New England, 34, 105. 



Pacific, 27, 42-44, 49. 



Rocky Mountain, 29, 30, 40,47. 



- Texan, 41. 



— Wisconsin, 37, 47, 49. 



Petasites, 180. 



Phacelia, 152. 



Phlox, 152. 



Phyteuma, 61. 



Pleiocardia gen. nov., 85. 



Pneumonanthe, 68. 



Polemonium, 153. 



Polygonaceous genera, 17. 



Polygonatum, 181. 



Porterella and Porteranthus, 204. 



Potamogeton, 24. 



Potentilla, 48, 188, 248. 



Psedera, 220. 



Psychrobatia, gen. nov., 245. 



Ptelea, 222. 



Radicula, 113. 

 Raflnesque, genera, 90, 94. 

 Ranunculus, 211. 

 Rhamnus, 63. 

 Rlioeidium gen. nov., 143. 

 Rhus, segregates of, 114-144. 

 Roripa, 113. 

 Rubaeer, 210, 230 

 Rubus, 238, 245. 

 Rumex, 17. 



Schmaltzia, Eastern, 128. 



Californian, 139. 



Mexican, 138. 



Rocky Mountain, 131. 



Texan, 133. 



Senecio, 212, 221. 



Serpentaria, 17. 

 Sida, 208. 

 Sidalcea, 75. 

 Sieversia, 4. 



segregates, 174. 



Silene, sp. nov , 75, 153. 



Menziesii, 97. 



Sophia, 96. 

 Sphaeralcea, 206. 

 Sprengeria gen. nov., 198. 

 Streptanthus, 81, 88, 225. 

 Swertia 72, 77, 91. 



Taravalia gen. nov., 222. 

 Thelypodium, 81, 227. 

 Thyrsanthema, 158, 

 Tiniaria, 23. 

 Torrey, on names, 203. 

 Touteria, 209. 

 Townsendia, 213, 

 Toxicodendron, 114. 



Californian, 119. 



Eastern, 115. 



Mexican, 123. 



Western, 118. 



Southern, 125. 



Texan, 124. 



Japanese, 127. 



Traeaulon, 21. 

 Traganthes, 12. 

 Tridophyllum, 188. 

 Trifolium, 154. 

 Tumionella gen. nov. , 173. 

 Tussilago, 155 



Unamia gen. nov., 6 

 Uncasia gen, nov., 13. 

 Uropappus, 213. 



Viola, sp. nov., 2, 184, 247. 



mutations, 182. 



hybrids, 182. 



Virgaria, 5. 

 Vitis, 219. 

 Washingtonia, 204, 

 Wittia, 204. 



