INDEX. 



475 



PLUCHEINE/E, 57. 

 Plummeni, 51), 237. 



floribunda, 237. 

 Polyactidium, 2U7, 219. 

 Polyactis, 207, 219. 

 Puli/dymia, 377. 

 Polymnia, 60, 238. 



Canadensis, 238. 



Caroliniana, 243. 



perfoliata, 449. 



Tetragonothi-ca, 255. 



Cvedalia, 238. 

 Polymniastrum, 2 : J8. 

 Poly pappus sericeus, 225. 

 Polypteris, 74, 337. 



callosa, 337. 



Hookeriana, 337. 



integrifolia, 337. 



integnfolia, 352. 



Texana. 337. 

 Porophyllum, 76, 354. 



amplexicaule, 355. 



gracile, 355. 



Greygii, 355. 



macvocephalum, 354. 

 Prenanthes, 87, 432. 



alata, 435. 



alba, 434. 



alb.i, 434, 435. 



altissima, 434. 



aphylla, 436. 



aspera, 433. 



autumnalis, 433. 



Boottii, 435. 



cordnta, 435. 



crepidinea, 433. 



crepidinea, 434. 



deltoidea, 435. 



exigua, 436. 



glauca, 434. 



fllinoensis, 433. 



juncea, 435. 



Mainensis, 433. 



Miamensis, 474. 



ovuta, 434. 



pauciflora, 413. 



polymorpha, 431. 



proteophylld, 434. 



pyymten, 431. 



racemosa, 433. 



Boanensis, 434. 



rubicunda, 434. 



runcinata, 413. 



serpentaria, 434. 



simplex, 433. 



suavis,^ 434. 



tenui folia, 413. 

 Prionopsis, 125. 



Chapmanii, 174. 



cilia ta, 125. 

 Proustia, 408. 

 Psacalium, 397. 

 Psathyrotes, 80, 377. 



annua, 377. 



intisa, 343. 



pilifera, 377. 



ramosissima, 377. 



scaposa, 378. 

 Pseudo-Bahia, 323. 

 Pseudo-Monolopia, 331. 

 Psilactis, 56, 170. 



asteroides, 171. 



brevilingulata, 171. 



Coulteri, 171. 

 Psilocarpcea, 296. 



Psilocarphus, 58, 228, 448. 



brcvissimus, 448. 



brevifsimus, 228. 



Chilensis, 448. 



elatior, 448. 



globiferus, (228,) 448. 



ylobiferus, 228. 



Oreganus, 228, 448. 



tenellus, 228, 448. 

 Psilochcena, 431. 



occidentalis, 432. 

 Psilustrophe ynaphaliodes, 318. 

 Psychotria, 21, 30. 



chimarroides, 31. 



lanceolala, 31. 



nervosa, 31. 



oligotricha, 31. 



ru/'eseens, 31. 



tenuifolia. 31. 



undata, 30. 

 Psychotrophum, 30. 

 Ptannica borealis, 363. 



vulyttris, 363. 

 Pterocaulon, 57, 226. 



pycnostachyuni, 226. 



virgatum, 226. 

 Pteronin Caroliniana, 109. 

 Pterophyton, 287. 

 Ptilomens. 327. 



ajftnis, 327. 



anthemoides, 328. 



aristata, 327. 



coronaria. 327. 



mutica, 328. 



teneZ/rt, 327. 

 Ptilonella scabra, 304. 

 Ptilophora, 416. 



major, 417. 



nu/ans, 417. 

 Pugiopappus, 300. 



Bitjelovii, 300. 



Breweri, 300. 



calliopsideits, 300. 

 Pulicaria annua, 219. 

 Pyrethrum, 364. 



bipinnatum, 364. 



inodorum, 363. 



Parthenium, 365. 

 Pyrochceta, 170. 

 Pyrrhopappus, 87, 440. 



Carolinianus, 441. 



grandiflorus, 441. 



multicaulis, 441. 



multicaulis, 441. 



pauciflorus. 441. 



Rothrockii, 441. 



scaposus, 441 . 



Sesseanus, 441. 

 Pyrrocoma arrjvta, 127. 



carthamw'des, 126. 



foliosa, 128. 



glomerata, 127- 



yr'uuhlioides, 125. 



Menziis/i, 143. 



paniculata, 127. 



racemosa, 127. 



radiata, 126. 



Rafinesquia, 85, 415. 



California, 415, 446. 



Neo-Mexicana, 415. 

 Ragweed, 248. 

 Kaillardella, 81. 380. 



argentea, 38U. 

 i, 380. 



Muirii, 380. 



Pringlei, 380. 



scaposa, 380. 

 Baillardia, 380. 

 Rancaqua, 324. 

 Randia, 20, 28. 



aculeata, 28. 



elusive folia, 29. 



latifolia, 29. 



mziw, 29. 



Xalapensis, 29. 

 Ratibida columnaris, 264. 



sidcata, 264. 



Rattlesnake-root, 433, 434. 

 Itelbunium, 35, 40, 41. 



microphytlum, 41. 



polyplocum, 41. 

 Rhabdocaulis, 290. 

 Rhinactina, 200. 

 Rhyncholepis, 227. 

 Richardia, 22, 32. 



pilosa, 32. 



scabra, 32. 



Richnrilsonia sc<ibra, 32. 

 Riddellia, 71, 317. 



arachnoidea, 318. 



Cooperi, 318. 



tagetina, 317. 

 RIPDELLIE^E, 71. 

 Rigiopappus, 74, 338. 



leptocladus, 338. 

 TJof'oc, 29. 

 Rosfdesia, 104. 

 Rosin-weed, 240, 241. 

 Rutltia Carolinensis, 335. 

 Rubia, 35. 



Broivnei, 42. 



peregrinn, 42. 



tinctoria, 35. 



Widteri, 42. 

 RUBIACEYE, 19. 

 Rudbcckia, 65, 259. 



ofoto, 348. 



alismaefolia, 261. 



amplexicaulis, 263. 



amplexifolia, 263. 



anyuKtij'olia, 273. 



apetala, 274. 



aristata, 259. 



aspera, 261. 



atrorubens, 259. 



bicolor, 260. 



bupleuroides,259. 



Californica, 262. 



ckrysomela, 261. 



columnaris, 264. 



digitata, 2G2, 264. 



discolor, 260, 261. 



fulgida, 260. 

 futgida, 261. 



ylobosa, 264. 

 yracilis, 260. 

 grandiflora, 261 

 Heliopsidis, 261. 

 Heliopsidis, 261. 

 heterophylla, 263. 

 hirta, 260. 

 hupiila, 258. 

 laciniata, 262. 

 Icevigata, 262. 

 maxima, 262. 

 Mohrii, 259. 

 mollis, 261. 

 montana, 263. 



