Baccharis. COMPOSITE. 22S 



petioled, more or less triplinerred, often with 2 to 4 short loljr-s or teeth ; those of the 

 hranchfs from oblanceolate to linear, mo-tly entire, 1-nen-ed: heads .-oinewliat uakedlv 

 paniculate on the brauclilet~, short-pedunculate or the glomerules more or less peduncuLate: 

 involucre campanulate or oblong. 3 or sometimes 4 line^ long, mostly of firm cori,u;eous and 

 obtuse bracts : the outermost oval, innerjpblon;;, tlie innermost thin, iinear and acutish : piqv 

 pu> of male flowers bearded towards the tip; of the fenjale in fruit half-inch lout;. — Ijnt. 

 Mex. Bound. 83, &, Bot. Calif, i, 33-3, .locribed from mere branches. B. pilulwis, Xutt. 

 Trans. Am^ Phil. Soc. 1. >;., partly, not DC. B. salicina, llothr. in Wheeler Rep. vi. 15G, 

 li Bot. Calif, ii. 456, partly. — Along watercourses, from Los jVugcles southward, through 

 ^Vrizona and in .s. Xevada and Utah. 

 B. sarothroides, Geav. Erect, fastigiately much branched, 10 to 1.5 feet high : leaves aU 

 nearly linear, entire, 1-nerved, rigid, small ; the larger (less than inch long and 2 lines wide) 

 narrowed at base ; those of the slender and strongly striate-augled brancldets commonly 

 sparse and minute : heads loosely paniculate, terminating ultimate naked branchlets, small ; 

 involucre of the male campanulate, hardly 2 lines long; of the female ratlier oblong, only 

 about 10-flo«ered ; short outer bracts ovate or oval, very obtuse, iunermost tliin and broadly 

 linear: clavellate tips of male pappus nalied : female pappus in fruit 3 lines long. — Proc. 

 Am. Acad. xvii. 212. — S. California, from San iJiego to the ilexican line, Suttun Hayes, 

 Palmer. Has been confounded with B. Eiiwrji and B. serffiloides. {Adj. Jlex.) 



* # * Species of Mexican border, with branchlets terete, less striate, pruino-c-scaljridous. 

 _ B. pteronioides, DC. Diffusely branched: leaves small (rarely half-iuch long), crowded 

 and fasci'l..-d on tlie branchlets, from lanceolate-spatulate to liuear, tbickish, nearly veinle^s, 

 the larger 2-G-dentate : heads singly terminating very short den.^ely leafy branchlets, which 

 are crowded iu a virgate or racemose way along the branches: involucre 3 lines long, cam- 

 panulate : the outer bracts ovate or oblong : pappus of the male huwers not at all clavellate ; 

 of the female in fruit 4 lines long, not much surpassing the corolla. — Prodr. v. 410. B. ramu- 

 losa. Gray, PI. Thurb. 301, & Bot. ^lex. Bound. 84. Aplnpappus raiiuiJu.^us, DC. 1. c. 350. 

 h'uiiis'jr'is {Aplodiscus) ramulosa, Gray, PI. Wright, i. 97, & ii. 80. — Xen' ^lexico and Ari- 

 zona. (Mex.) 



§ 3. Pappus rather rigid and .scanty, sliort, not elongated witli age, of tlie fertile 

 flowfi-s even iu fruit not surpa.s.^ing the .style : akeues 10-nerved (the .5 primar_y 

 nerves sometimes the more prominent) : fertile corollas regularly cleft at apex 

 into .3 sirbulate lobe.s : some chaff among the flowers on the sometimes elevated 

 recejjtacle similar to the innermost involucral Ijracts : branches broom-like. 



B. sergiloides. Gray. Suffrutico.se, glabrous, 3 to 5 feet high, very much branched : the 

 slender and partly herbaceous br.uirbes and branchlets strongly striate-angled and naked, 

 bearing a few small leaves and paniculate mostly short-pedunculate heads : larger leaves 

 spatulate, entire, rarely 2-4-toothed (the larger seldom over half-inch long) : heads 2 or 3 

 lines long : bracts of the involucre small, oblong or lanceolate, rather obtuse, of firm texture : 

 fertile papjins barely twice the length of tliB mature akeues. — Bot. ilex. Bound. 83, Pacif. 

 E. IJep. iv. 101, & Bot. Calif, i. 3.33, partly, and not well characterized. — Arid districts of 

 S. K. California and adjacent Xevada to S. W. X'tali, Bir/iJ'jir, Wh/thr, Pnhiifr, Parish, &c. 

 '\"aries iu the amount of imliricatiun of the involucre, and the number of chaffy scales ; when 

 these are numerous the receptacle becomes conical and the disk very convex. 



§ 4. Pappus of the fertile flowers not flaccid, little if at all elongated in fruit, 

 not very copious : akenes only o-nerved, sometimes 4-nerved. Suutliwestern, 

 chiefly Paciflc species. 



* Scabro-pnberulent or pubescent fhrouehout, not glutinous: fruiting pappus manifestly surpass- 

 ing the style: heads loosely paniculate: bracts of the involucre scariou--mar;.;ined from a green 

 or i^-rcenish back or centre, acute or acuminate: stems lierbaceous from a wootly or merely lig- 

 nescent ba^e, 2 or 3 feet high : leaves not rigid. 

 B. brachypll^lla, Gray, ilinutely scabro-puberulent, diffusely much orauched, slender : 

 lea^■cs small, entire, mostly linear, l-ner\-ed, the larger cauline seldom over half-inch long, on 

 the branchlets mostly becoming minute and scale-like: heads 3 lines long, 12-I5-{)owered: 



