INDEX. 



Names of orders are in CAPITALS; of suborders, tribes, <S:c., in sjiall capitals; of admitted 

 genera and species, in ordinary Koman type; of synonyms, in Italic type. 



Ahr:>famm., 369. 

 Absinthium^ 369. 



vulqiire, 370. 

 Acamptopappiis, 54, 124. 



Shockleyi, 124. 



.spha>rocephaliis, 124. 

 Acantholmin, 250. 

 Acanthospenniim, GO, 239. 



australe, 239. 



Brnsiluin, 239. 



higpi'lum, 240. 



humile, 240. 



xantliioides, 230. 

 Acanthoxaiith iuiii, 253. 

 Acarphwa, 342. 



artemidmfvUa, 342. 

 Acha'tn, 288. 

 Achillea, 78, 363. 



borealis, 363. 



m-acilis, 363. 



Innulosa, 363. 



Millefolium. -363. 



multiflora,_ 363. 



occidtntalis, 363. 



Ptarmica, 363. 



tomentosn , 363. 

 Ach3Tacha;na, 69, 312. 



'mollis, 312. 

 AcJiyrcea, 124. 

 Achi/roprippus, 332. 



'\Voo'/huus,fi, 333. 

 Aciphylhva, 357. 



acerosa, 357. 

 Acmella occidentalis, 258. 



repens, 258. 

 Acoma dissectum, 301. 

 Acosmia, 263. 

 Acourtia, 408. 



microcephala, 409. 

 Actineti, 344. 

 Actiiiella, 75, 344. 



acaulis, 345. 



argentea, 345. 



biennis, 346. 



Bigelovii, 346. 



Brandegei, 345. 



chry>anthemoides, 345. 



depressa, 345. 



f/labrri, 345. 



grandiflora, 345. 



insignis, 345. 



lanata, 330, 345. 



Innuf/inosti, 344. 



leploclada, 345. 



linearifolia. 344. 



odorata, 347. 



Ricliardsonii, 347. 



Jiivhardsonii, 346. 



Riishyi, 346. 



scnposa, 344. 



Tdrrei/rina, 345. 



Vaseyi, 346. 

 Actinaphoria, 129. 

 Actinolepis, 328. 



ant/iemoides, 328. 



coromiria, 327. 



lanosa, 329. 



Leinmoni, 328. 



nndticitulis, 328. 



nuitica, 328. 



iiircii, 323. 



<(-»c//r/, 327. 



WaHacci, 329. 

 Actinomeris. 67, 289. 



a?afa, 287. 



all.a, 289. 



alterni folia, 289. 



lielian'thoidef, 288. 



lifternphyUa, 288. 



Ion r/i folia, 287. 



niii)ihnilis. 288. 



ojipofiiifollri, 288, 289. 



jviurijiom, 288. 



squarrosa, 289. 



Wric/htii, 288. 

 Actlnosptinnum 



anr/nstijoliiim, 303. 



ADENotAUI.K.K. 59. 



Adenocaulon, 59, 237. 



bicolor, 237. 

 Adenoxtyles Nardo.imia. 376. 

 Adenophyllum Wriglitii, 357. 

 Adopor/on, 412. 

 Adoxa. 7, 8. 



Moschatellina, 8. 

 jEtkulin vni-flora, 92. 

 Agassizia, 351. 



su(tri.% 351. 

 Ar/aristrr, 299, 300. 



calliopsiden, 300. 

 Agathyrsus, 443. 



J- (II nd alius, 443. 



huroplueus, 443. 

 Ageratiini, 51, 93. 



(iltissimum, 101. 



cakstinum, 93. 



conyzoides, 93. 



corvnibosum, 93. 



Hn'care, 338. 



littorale, 93. 



maritimum, 93. 



Mexicanum, 93. 



piinrfnfinn, 92. 



Wrifihtii, 92. 

 Alarconia anr/iislifolia, 268. 



Julrnioidrs, 2(17. 



Inlianthoidfs. 267. 

 Aldama umscrialis, 256. 

 Alloseris, 412. 

 Alynmia, 238. 

 Amauria, 332. 



dissecta, 334. 

 Amblyolepis, 76, 351. 



sotigera, 351. 

 Amblyopappus, 73, 334. 



pusillus, 334. 

 Ambrosia, 63. 248. 



absinth if olia, 249. 



acanthicarpa, 251. 



aptera, 249. 



artiMnisicefolia, 249. 



bidentata, 249. 



cheiranthifolia, 249. 



confi'rlijiora,, 251). 



coronojtifolia. 250. 



crilh mi folia, 250. 



elalioi\ 249. 



J'nitirosa, 250. 



ghindulosa. 250. 



fieterophylla, 249. 



liispida, 250. 



inftf/rifolia, 249. 



Lindhi^imeriana. 250. 



longistylis, 24i). ' 



lonf/istylis, 250. 



paniriddta , 249. 



Peruviana, 250. 



Pitcheri, 246. 



psilostauhya, 250. 



puniila. 250. 



ttnuifolia, 250. 



tomentosn, 251, 

 Amhrosie.e, 62. 

 Anifllastrum, 172. 

 Amellus Cnrolinianus, 256. 



spinulosus, 130. 



villosus, 123. 

 Amidri grnrilis, 306. 



hirsutu, 306. 

 Ammodia, 124. 



Orec/ana, 124. 

 Ammorjeton 



scorzone ne.folium, 438. 

 Amphiachvris," 53, 116. 



dracunculoides, 116. 



Fremoiiti, 116. 

 Ainj)hij>appus Frenwnti, 116. 

 Anacalais, 417. 



