INDEX. 



NAMES of orders are in CAPITALS; of suborders, tribes, &c., in SMALL CAPITALS; of admitted 

 genera and species, in ordinary Roman type; of synonyms, as also of subgeuera, sections, and all species 

 merely referred to, in Italic type. 



Abrotanum, 369. 

 Absinthium, 369. 



vulgare, 370. 

 Acamptopappus, 54, 124. 



Sliockleyi, 124. 



sphserocephalus, 124. 

 Acantkolcuna, 25U. 

 Acanthospermum, GO, 239. 



australe, 239. 



Brasilum, 239. 



hispi'lum, 240. 



humile, 240. 



xanthioides, 239. 

 Acanthoxant/iium, 253. 

 Acarphcea, 342. 



artemisicejblia, 342. 

 Achcsta, 288. 

 Aeliillea, 78, 363. 



borenlis, 363. 



qracilis, 363. 



lanulosa, 363. 



Millefoliiim, 363. 



multiflora, 363. 



occidentatts, 363. 



Ptarmica. 363. 



tomentosa, 363. 

 Achyraclucna, 69, 312. 



moll is, 312. 

 Achyrcea, 124. 

 Ackyropappus, 332. 



Wuodhousei, 333. 

 Aciphyllma, 357. 



acerosa, 357. 

 Acmella occidentnlis, 258. 



repens, 258. 

 Acoma dissectum, 301. 

 Acosmia, 263. 

 Acvurtirt, 408 



microcephala, 409. 

 Actinea, 344. 

 Actinella, 75, 344. 



acaulis, 345. 



argentea, 345. 



bisnnis, 346. 



Bigelovii, 346. 



Brandcgei, 345. 



chrysanthemoid.es, 345. 



Cooperi, 346. 



depressa, 345. 



glabra, 345. 



grandiflora, 345. 



insignis, 345. 



lanata, 330, 345. 



lanuginosa, 344. 



leptoclada, 345. 



linearifolia, 344. 



odorata, 347. 



Palmeri, 344. 



Richardsonii, 347. 



Richardsonii, 346. 



Rusbyi, 346. 



scaposa, 344. 



Torreyana, 345. 



Vaseyi, 346. 

 Actinaphoria, 129. 

 Actinolepis, 328. 



anthemoides, 328. 



coronaria, 327. 



lanosa, 320. 



Lemmoni, 328. 



multicaulis, 328. 



mutica, 328. 



nicea, 323. 



tenella. 327. 

 Wallacei, 329. 

 Actinomeris, 67, 289. 



/^r, 287. 



alba, 289. 



alternifulia, 289. 



helianthoides, 288. 



heterophylla, 288. 



lonyifolia, 287. 



nudicaulig, 288. 



oppositifi/lia, 288, 289. 



paucijlora, 288. 



squarrosa, 289. 

 Wriyhtii, 288. 

 Actinospermum, 302. 



anrjustif: Hum, 303. 

 ADENOCAULE/E, 59. 

 Ailenocaulon. 59, 237. 



bicolor, 237. 



Adenophyllum Wrightii, 357. 

 Arfenostyles Nardosmin, 376. 

 Ailnpoijon, 412. 

 Adoxa, 7, 8. 



Moschatellina, 8. 

 sElhulin, uniflora, 92. 

 Agaristrt, 290, 300. 



cnlliopsidea, 300. 

 Agassizia, 351 . 



suavis, 351. 

 Agnihyrsus, 443. 



Floridanus, 443. 



leucopkceus, 444. 

 Ageratum, 51, 03. 



altissimum, 101. 



ccelestinum, 93. 



conyzoides, 93. 



corymbosum, 93. 



lineare, 338. 



littorale, 93. 



mnritimum, 93. 



Mexicanum, 93. 

 punctatum, 92. 



Wrightii, 92. 

 Alarcunia anyustifolia, 268 



helenitiides, 2~67. 

 Alcinu perfoliata, 449. 

 Aldama uniserialis, 256. 

 Alloseris, 412. 

 Alymniit, 2-';S. 

 Amauria, 332. 



(//&s< (.<<(, 334. 

 Amblyolepis, 76, 351. 



setigera, 351. 

 Amblyupappus, 73, 334. 



Neo-Mcxicanus, 333. 



pusillus, 334. 

 Ambrosia, 63, 248. 



n/>xi/nthi/'olia, 249. 



acanthicurpa, 251. 



aptera, 240. 



artemisia-folia, 249. 



bidentata, 249. 



cheirantliifolia, 249. 



confertiflora, 250. 



curanopifoKn, 200. 



crithmif'olia, 250. 



elatior, 249. 

 fruticiisa, 250. 



glandulosa, 2"iO. 



'heterophylla, 249. 



hispida, 250. 



integrifolia, 249. 



Linflheimeriana, 250. 



longistylis, 249. 



longistylis, 250. 



paniculata, 249. 



Perurlann, 250. 



Pitch fri, 246. 



psilostachya, 250. 



pumila, 250. 



tenuifulia, 250, 449. 



tomentosa, 251. 



trifida, 249. 

 AMBKOSIE/E, 62. 

 Ami'llastrum, 172. 

 Amellus Citrohnirinus, 256. 



spinulosus, 130. 



rtllosus, 123. 

 Ami'la </r<icUit, 306. 



kirsuta, 306. 

 Ammodia, 124. 



Orer/ana, 124. 

 Ammogeton 



scorzonercefolium, 437. 

 Amphiachyris, 53, 116. 



