TriUiia. COMPOSITE 113 



* Leaves all acerose, erect or appresstd. 

 C. Pseudo-Liatris, Ca**. 1. t. Cinereou-i-pu'ie5eent, glalirate below, glaucescent: stems 

 a foot or two high, verr srrict : Itraves irith base half-cla^pinu' the stem, riu'i'i, somewhat 

 eariiiate ; 1o\n l -^t j or 10 inches long, a line or less broad i cauline L'radtiiilly reduced to sub- 

 ulate appressed bracts : heaU few or numerous in a small compact terminal cymn : involu- 

 cral bracts ovate-lanceolate, acuminate, densely pube~c enr. — Torr. i Gray, 1. c. : Eert'l. 

 ^lise. r. 14. Liatris squamosa, Xutt. Jour. Acad. PhOad. vii. 73 ; H'j'jk. Comp. Bet. Hag. 

 i. 95. — Graisy pine barrens, Alabama, iDddle Florida, and Mississippi to Louisiana. 



:.= * Leaves plane, thickish; radical ones spatulate, tapering into a margined petiole: cauline ob- 

 long', short, closely sessile: bracts of the involucre pluriserial. 



C tomentoSUS, Toke. & Gila.t, 1. c. About 2 feet liigh. tomentulose. or below hirsute 

 and glabrate : heads numerous in the cyme (over half-inch loni'); bracts of the Involucre 

 caiieseently hirsute and viscid, mostly acute. — Liatris tomentosn, IMichx. Fl. ii. 73. L. M^a'ttr^. 

 Ell. Sk. ii. 2S5, excl. syn. Walt. — Low pine barrens, X. C arolina to Florida. 

 " C. corymbosus, Tobb. & Ge.it, 1. c. Stonter and taller, minutely hirsute or pubescent : 

 cauline leaves broa Uy oblong : heads numerous in the compound cvme : involucre glabrous : 

 the braces all very obtuse or trtmcate, inner ones scarious-margined and erose at apex. — 

 Ll'iirii cori/mbcisa, Xutt. Gen. iL 102. excl. s™. L. lomentosa. Ell. 1. c, not ilichx. — Maririu 

 of swamps in pine barreuB, X Carolina to Florida. 

 C. beUidifolius, Toee. & Gbat, 1. c. About a foot high, rather slender, often branched 

 below the middle, almost glabrcais . cauline leaves narrowly oblong or oblanceulate : heads " 

 fewer and scattered, raoie pedunculate : involucre of looser bracts ; the lower rather spread- 

 inir. innermost thin and linear, all very obtuse. — L-ntris belliJ'Tolia, ilichx. 1. c. ; Xutt. 1. c. 

 Aiiop'/ino.' unidorus, Walt. Car. 19S 1 — .Saudy woods and pine Ijarrei^s. from Wilmington, 

 X. Carolina, to Georgia. 



§ 2. KuHXiOiDES, Gray. P.ippu= a single series of about 15 plumose bristles : 



flowers wMte or ochroleucoTis : bracts of tlie involucre feA\ er. in about 3 ranks : 



stems much, branclied, shrubby at base, fe-iv-leaved : lower leaves opjiosite : Pacific 



species. 



—C. jlinceus, Bexih. INHnutely hispid or glabrate, or above somewhat canescent, 2 or 3 feet 



hii;'i : branches slender and rigid, jnncilorm; the branchlets often leafless, terminated by 



s olirar^- or 2 or 3 hemispherical head- (of half-inch length ) ■ leave- linear, sometimes sparingly 



lobed, upper ones filiform or reduced to siihiilate bracts, or early deciduous : braets of the 



iuvolucre obtuse or acutish; outer ones canescently hirsute and ovate or oblong : inner otes 



thin and narrower. —Bor. Sulpli. 21 ; Gray, Proc Am. Acad. viii. CD2. i Bot. Calif. 301.— 



Sail Iv banks of streams, soncheru borders of California to Arizona, where the involucral 



braets are narrower. (>. Calif., first cuU. by Hinds.) 



C. ATEiPLiciFOi-irs, Gray, I'rjc. Am. Acad. v. 159, from Cape San Lucas, ^. California, 

 X'jt.ttii. is pojsiblv a form of "the last, with oblong laciniate-tootbed or somewhat hastate leaves, 

 on distinct petioles, and rather oblong heads : specimens insufiicieut. 



18. TRILISIA. Ca;?. (T/e-s, three, /iViVr. threads or girdles; application ol> 



sciire.) Atlantic U. S. perennials ; with simple and erect rather tall leafy -tenis. 



terminating in a thyrsus or panicle of cymules of small heads : leave? entire, oval 

 to lanceokte : cauline partly clasping, radical much larger and tapering at Ixise 

 into a margined petiole. Fiowers rose-purple, autumnal. Involucre of few oval 

 or oblons somewhat herbaceous equal bracts, usually with 2 or .3 small and loose 

 exterior ^ones.— Bull. Philom.. ISIS, & Diet. iv. 310; Benth. cV: Hook. Gen. 

 ii. 248. Liatris 5 Trih'sta. DC, escl. spec. : Torr. eV- Gray, Fl. ii. 70. 

 - T. odoratissima, C.iss. l. c. (Va^illa-plaxt. HotrxDSTOXGri:.) Glabrous : stem 2 or 3 

 feet high: leaves thickish, pale, often glaucous, obsairely-veined, vanilla-scented in drymg ; 

 radicaf and lower canline 4 to 10 inches long, oval or oblong, upper ones becoming very 

 small ; heads (3 or 4 lines long) rather numerous in open cvmnles, and these cymo^ely pa- 

 niculate : akenes glandular. — -inonymos odoralissimus, Walt. Car. 19?. Lialris odoratissima. 



