390 COMl'OSIT.E. Clutnactii. 



Southeastern Nevaila, Miss Scads ; iiiiiy l)c looked lor on tlic Colorailo : addiil lu coniplett: tlio 

 account of the gi-nus. 



(). C stevioideB, Hook, i^ Ani. CJorymbobcly hmiu'.liud, a spun or luoro high : 

 l(MiVD3 uiicu ur huimiwliiit twico pimmtuly piuiod inU) miiiow lijiear lobes, Uio upiu;!- 

 m(»atly oiiliro : scales ul" tlio pa[i[)Us lanccolato or iuin'i»\vly ol)luiig, uciilc, uol iimcli 

 shorter than tho akum;. 



Sand-hills on the Colorado, Hear the Mohave, &u., mill through Nevada north to Pyramid Lake 

 and east to Utah and New Mexico. Heads rather sujall, on iieduncles from half un inch to an 

 inch and a half in length. 



4- +- 'The iiuinjinal corollas little or not at all eiilaryed, reyular or near 1 1/ so. 



++ Scales of the involucre tapering into a Jiliforni or setaceous-subulate tip : /xtj'j'us of 

 4 equal scales : pubescence minute and glandular, no wooUintss. 



7. C. carphoclinia, Gray. Corymbosely branched, slender, rigid, a span high : 

 leaves once or twice [)inuately parted into nearly lilifurni lolies : invohicre eainjjanu- 

 late ; its scales with rather al)riii)t and short setaceous (jr subulate tips (sometimes 

 sparsely hispid as well as glandular-viscid) : receptacle furnished with 5 to 10 slen- 

 der and rigid persistent awns subtentling Howers and almost equalling them in 

 length : scales of the pappus ovate-lanceoliite, acuminate, nearly as long as the akene, 

 more than half the length of the corolla, or in a few of the outermost llowers short 

 and truncate. — Uot. Mex. llountl. i) 1. 



Southeastern borders of tiio Strife ; ut Fort Yuma {TInnnas) ; on the (iila and Colorado Desert 

 {Scholl, A. B. Graij) to S. Utah, J'urry. Also Northwestern Nevada near the borders of Cali- 

 fornia, Lemmon. Remarkable for the pidece (rather than fiinbrilloe) of the receptacle in the form 

 of awns, subtending some or most of the disk-llowei-s. 



8. C. attenuata. Gray. IJesembles the preceding; but leaves ap])arently less 

 divided and more liliform : heads smaller (5 lines long), much narrower and fewer- 

 flowered : scales of the involucre narrow and more concave or involute : receptacle 

 naked, as in the genus generally : scales of the i)appus broadly obovate-cuneate and 

 truncate, many times sliorter than the corolla or the akene, little excelling the 

 liirsutc hairs of the lattt;r. — Proc. Am. Acad. x. 73. 



Ehrenberg, Arizona, A. E. Janvier, from W. M. Caiiby ; possibly on the borders of Califoiiiia 

 also : added to comi)lete the genus. 



++++ Scales of the involucre obtuse and j)ointless : pappus double, i. e. <f 4 long and 4 

 very short and dijTcrentli/shaped scales : leaves once orr somewhat twice jnnnatijid or 

 the ujipennost entire : woolUness thin and soon deciduous. 



9. C. Xantiana, Gray. A span to a foot or more high, rather stout ; tho stem 

 or branches terminated by a solitary large liead on a thickish i)eduncle : leaves 

 pinnately parted into 3 to 7 narrowly linear and distant lobes, the terminal one 

 elongated : scales of the involucre narrowly linear, rather loose : anthers at length 

 mainly exserted : pappus of 4 lanceolate scales almost equalling the corolla, and 

 4 exterior ones wliicli are obovate or obcordate and several times shoiter. — Proc, 

 Am. Acad. v. 545. 



Var. integrifolia, Gray, 1. c. A slender simple-stemmed form, with most of the 

 narrow linear elongated leaves entire, rarely a lobe or two, and tlio head narrower 

 and fewer-flowered. 



Near Fort Tejon, Xantus. Owens Valley, Dr. Horn (the variety). Western borders of 

 Nevada, Anderson, Lemmon. Head an inch or less high, on a niost|y iistulous iiedunele of an 

 inch or two in length ; one or two of ihe ui)])erni()st simide leaves passing into involucral bracts. 

 Corollas a (juarter of an inch long ; the short lobes of those of the disk sparsely bearded exter- 

 nally ; those of the margin twice or thrice as large. Akenes fully 3 lines long. 



10. C. macrantha, D. C. Eaton. A span high : leaves pinnately or somewhat 

 twice pinnately parted into broadly linear or oblong lobes : scales of the involucre 

 linear : anthers iuchuled : pappus of 4 linear-oblong scales about half tlu; length of 



