CJicenactis. COMPOSIT.E. 339 



Var. longiaristatus. A small form : involucre only 2 lines high : pappus of 

 (mostly 3) more sleudtr awus, subulate-dilated at base, much longer thau the corolla, rather 

 longer than the akene. — liattlesuake Bar, California, Mrs. Curran. 



153. CH-^NACTIS, DC. (XaiVoj, to i,nxpe, and d/<T6?, ray, the enlarging 

 orifice and limb of tlie marginal corollas in most species simulating a kind of 

 ray.) — Herbaceous or rarely sulfrutescent ("Western N. Amei'ican) ; with alter- 

 nate mostly jjinnately dissected leaves, and pedunculate solitary or sometimes 

 cymosely disposed heads of yellow, white, or tiesh-colored flowers. Pappus more 

 commonly shorter or of fewer palene in the outer flowers. Akenes pubescent, 

 rarely glabrate. — Prodr. v. 65 D ; Benth. & Hook. Gen. ii. 401; Gray, Proc. 

 Am. Acad. vi. 545, x. 73. 



§ 1. Cii.ENACTis proper. Pappus of entire or merely erose persistent palea?, 

 rarely" obsolete : akenes more or less tetragonal or terete, slender. 



# Condlas yellow, the marginal ones with enlarged throat and limb, somewhat unequally or as if 

 palmately 5-lobed: annuals, mostly winter annuals, flowering in spring. 



4— Pappus of -i (rarely if ever '' 5 or G ") nearly equal narrowly oblong or oblong-lanceolate acut- 

 ish palcye, at least the inner attaining to the throat of the corolla. 



C. lanosa, UC Floccosely white-woolly when young, flowering from near the base with 

 (3 to 8 inches) long naked peduncles, the earliest scapiform : leaves thickish, simply pin- 

 uately parted into a few narrowly linear (rarely again parted) lobes no wider than the rhachis, 

 or uppermost entire : heads half-inch high : involucral bracts nearly linear : marginal 

 flowers moderately ampliate, not surpassing the disk. — Prodr. I.e.; Torr. & Gray, Fl. ii. 

 370 ; Gray, Bot. Calif, i. 389. — California, common from Monterey southward to San Ber- 

 nardino, &c. 



C. glabriuscula, T)C. Taller, stouter, more caulescent, a foot or more high, thinly floccose, 

 at lengtli denudate, branching ahove, and with stout sometimes elongated peduncles bearing 

 solitary heads of two-thirds to three-fourths inch high : leaves with more numerous and 

 irregular lobes : bracts of the involucre broader, thickish, glabrate, obtuse : marginal corollas 

 with much ampliate and more palmate limb, surpassing the disk. — Prodr. 1. c. ; Gray, 1. c. 

 C. denudata, Nutt. PI. Gamb. 177. The var. me<i(iccphalu, Gray, Pacif. R. Eep. iv. 104, 

 is merely a larger form. — California, from valley of the Sacramento southward. 



C. tenuifolia, Nutt. Somewhat white-tomentulose when young, glabrate, loosely branched, 

 often diffuse, bearing scattered or paniculately disposed heads (a third of an inch high) on 

 short slender peduncles : leaves once or twice piuuately parted into irregular and small linear 

 or oblong or sometimes nearly filiform lobes : involucral bracts narrow, rather rigid : limb of 

 marginal corollas short, not surpassing the disk. — Trans. Am. Phil. Soc. 1. c. 375; Torr. & 

 Gray, 1. c. ; Gray, Bot. Calif. 1. c. C.Jilifolia, Gray, PI. Fendl. 98, the most slender-leaved 

 form. On the sea-shore occurs an opposite extreme, with primary divisions of the leaves 

 pinnatifid into very short and thickish lobes. — Coast of California, from Santa Barbara to 

 San Diego ; also San Bernardino. 



•i— -i— Pappus of very obtuse mostly unequal palese, or obsolete. 



C. heterocarpha, (iKav. Lightly floccose, soon denudate, a span or two high, simple or 

 sj)ariiigly i>ranched : leaves pinnately or sometimes bipinnately parted into irregular and 

 unequal ratlicr crowded and short divisions and lobes : heads half-inch high, mostly on rather 

 long peduncles terminating stem and branches: bracts of the involucre broadly linear or 

 sometimes wider : limb of the marginal flowers conspicuously ampliate, sur])assiug the disk : 

 pajipus of inner flowers of 4 elliptical-oblong pale;u fully half the length of the corolla, and 

 with 4 or fewer alternate outer and roundish very short ones, but these occasionally wanting ; 

 in the outermost flowers all shorter or very short. — PI. Fendl. 98, & Bot. Calif. 1. c. Var. 

 tanarelifolki. Gray, 1. c. (C. tanacetl folia, Gray, Proc. Am. Acad. vi. 54.')), proves to be only 

 a stunted and condensed form. — California, from the Upper Sacramento and Lake Co. to 

 San Bernardino Co. ; first coll. by Ilurlwe;/. 



C. Nevii, Gray, Proc. Am. Acad. xix. 30. Dwarf, rather stout, puberulent, or leaves nearly 

 glabrous : peduncles short : marginal corollas little ampliate ; pappus of a few minute deuti- 



