INDEX. 



Names of orders are in CAPITALS; of suborders, tribes, &c., in small capitals; of admitted 

 genera and species, in ordinary Itomau type; of synonyms, as also of subgenera, sections, and all species 

 merely referred to, in Italic type. 



Abrotanum, .369. 

 Absinthium, 369. 



valf/ure, 370. 

 Acamptopappus, .54, 124. 



Siiockleyi, 124. 



sphicrocephalus, 124. 

 Acnntiioloina, 250. 

 Acanthospermum, 00, 239. 



australe, 239. 



Brasilum, 2:j9. 



hisj}i-/um, 240. 



huinile, 240. 



xantliioides, 239. 

 Acnnthoxanlhium, 253. 

 Acarphcea, 342. 



artemisimj'olia, 342. 

 AchcBta, 288. 

 Achillea, 78, 303. 



bo7-erdis, 363. 



qracilis, 363. 



"innulo.ia. 363. 



iVIillefoiium, 303. 



multiiiora, 363. 



occidtntalii, 363. 



Ptarmica, 363. 



tomcntosa, 363. 

 Achvracluena, 69, 312. 



mollis, 312. 

 Achyrcea, 124. 

 Achyropappus, 332. 



Woodhousn, 333. 

 Aciplnjlkcd, 357. 



acerosa, 357. 

 Acmella occidentalis, 258. 



repe.ns, 258. 

 Acoma dissectum, 301. 

 Acosmin, 233. 

 Acourtirt, 408 



microvcphala, 409. 

 Actinea, 344. 

 Actinella, 75, 344. 



acaulis, 345. 



argentea, 345. 



biennis, .346. 



Big.'lovii, 340. 



Brandegei, 345. 



chrysantlieniiiides, 345. 



Coo peri, 346. 



depressa, 345. 



glabra, 345. 



grandiflora, 345. 



insigiiis, 345. 



lunula . 330, .''.45. 



lanuf/inosn, 344. 



Icptoclada, 345. 



linearifolia, 344. 



odorata, 347. 



Palmeri, 344. 



Kieliardsonii^ 347. 



Richardsunii, 340. 



Rusbyi, 346. 



scapcisa, 344. 



Tvrrtyana, 345. 



Vaseyi, 346. 

 Actinaphuriu, 129. 

 Actinoltpis, 328. 



anthemoides, 328. 



coronaria, 327. 



lanusa, 329. 



Leinnioni, 328. 



inidticaulif. 328. 



mutica, 328. 



nivea, 323. 



tentlla. '621 . 



Walla cei, 329. 

 Actinonieris. 67, 289. 



«//^^/, 287. 



alba, 289. 



a It end folia, 289. 



hidianthuiih-s, 288. 



luttroplujUa, 288. 



lorir/i/'olia, 287. 



nudicaulin, 288. 



oppositifolia, 288, 289. 



paticijlora, 288. 



squarrosa, 289. 



Wriijhtii, 288. 

 Actinoyjtrm hdi, 302. 



arif/ii.ttij' Hum, 303. 



AnKNOCAULE.-E, 59. 



.Vdcnocaulon, 59, 237. 



bicolor, 2-37. 

 Ailenophyllum Wrif/htii, 357. 

 Adenosfyles Nnrdosmia, 376. 

 A'/ipoc/on, 412. 

 Adoxa, 7, 8. 



Moschateliina, 8. 

 ^■Elhulia vni flora, 92. 

 Afjarista, 299, 300. 



calliopsidea, 300. 

 Ayassizia, 351 . 



suavif!, 351 . 

 Afjnthyrsus, 443. 



Floridamis, 443. 



Itucoplueiis, 444. 

 .\geratum, 51, 93. 



altisdmum, 101. 



coeleslinum, 93. 



conyzoides, 93. 



cnrynibosum, 93. 



lineare, 338. 



littorale, 93. 



mnritimum, 93. 



Mcxicanum, 93. 



punctatun, 92. 



Wriyhtd, 92. 

 Alarconia an/pistifoUa, 2G8 



helenioidcs, 207. 

 Alcinu ptrfoliata, 449. 

 Aldama ziniserialis, 256. 

 .l//<-.s'o;/s, 412. 

 Aiyiunia, 238. 

 Amauria, 332. 



dissccta, 334. 

 Ambly()k'[)is, 70, 351. 



setigera, 351. 

 Aniblyopappus, 73, 334. 



Neo-Mexicanus, 333. 



pusilliis, 334. 

 Ambrosia, 63, 248. 



absynthifolia, 249. 



acnnlhicarpa, 251. 



aptera, 240. 



artemisiyefolia, 249. 



bidentata, 249. 



cli<;irantliifolia, 249. 



confertijlora, 250. 



cunnopi folia, 250. 



crit/niri folia, 250. 



t/;n<io?',"249. 



frutic^'Sa, 250. 



(ilandulosa, 250. 



neteropliylla, 249. 



hispida, 250. 



intcf/rifolia, 249. 



Z /?i f / A (' J ;/( eriaiia, 250. 



longistylis, 249. 



lont/i.^tylis, 250. 



panirulala, 249. 



Peruviana, 250. 



Pitch eri, 246. 



psilostachya, 250. 



puniila, 250. 



tenidfolia, 250, 449. 



tomentosa, 251. 



trilida, 249. 

 .\mbrosie.e, 62. 

 Amellastrum, 172. 

 Amellus Carolinianus, 256. 



spinulosus, 130. 



villosus, 123. 

 Amida (/racilia, 306. 



hirsuta, 306. 

 Ammodia, 124. 



Ore<ianu, 124. 



scorzonermfoUum, 437. 

 I Ampliiachyris," 53, 116. 



