Chanaetls. COMPOSIT.E. 339 



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

 (mostly 3) more sl.nder awns, subulate-dilated at base, much longer than the corolla rather 

 longer than the akene. — liattk-snake Bar, California, Mrs. Curran. 



153. CH^NACTIS, DC. (XatVw, to gape, and ukto, ray. the enlaririnjj 

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

 ray.) — Herbaceous or rarely suffrutescent (We,,tern X. American); with alter- 

 nate mostly pinnately di.ssected leaves, and pedunculate solitary or sometimes 

 cymosely disposed heads of yellow, white, or flesh-colored flowers" Pappus more 

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

 rarely glabrate. — Prodr. v. 659; Benth. & Hook. Gen. ii. 401; Gray, Proc. 

 Am. Acad. vi. 54.3, x. 73. 



§ 1. Ch.exactis proper. Pappus of entire or merely erose persistent palese, 

 rarely obsolete : akenes more or le^s tetragonal or terete, slender. 



* Corollas yellow, the marginal ones with enlarged throat and limb, somewhat unequally or as if 

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



■i— Pappus of 4 (rarely if ever '• 5 or 6 '') nearly equal narrowly oblcng or oblong-lanceolate acut- 

 ish paleae, at least the inner attaining to the throat id the corolla. 



"-C. lanosa, DC. 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- 

 nately 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 surpas-iug the disk. — Prodr. I.e.; Torr. & Grav, Fl. ii. 

 370 ; Gray, Bot. Calif, ii. 38'J. — Califuruia, common from ilonterey southward to San Ber- 

 nardino, &c. 



C. glabriuscula, BC. Taller, stouter, more caulescent, a foot or more high, thinly floccjse, 

 at length denudate. branching above, and with stout sometimes elongated peduncles bearing 

 solitary heads of two-thirds to three-fourths inch high: leaves with more numerMus 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, Xutt. PI. Gamb. 177. The var. megacephala, Gray. Pacif. R. Eep. iv. 104, 

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

 ' C. tenuif olia, Xctt. Somewhat white-tomentulose when young, glabrate, luosely branched, 

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

 short slender peduncles : leaves once or twice pinnately parted into irregular and ^mall linear 

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

 marginal corollas short, not surpassing the disk. — Trfns. Am. Phil. Smc. 1. c. 375 : Torr. & 

 Gray, 1. c. ; Gray, Bot. Calif. 1. c. C.filifoUa, 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. 



4— T— Pappus of very obtuse mostly unequal paleae, or obsolete. 



C. heterocarpha, Ge.w. Lightly floccose, soon denudate, a span or two high, simple or 

 sparingly branched : leaves pinnately or sometimes bipinnately parted into irregular and 

 unequal rather 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 amphate, surpassing the disk : 

 papjius of inner flowers of 4 elliptical-oblong palea; 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. 9*. & Bot. Calif. 1. c. ^'ar. 

 tanacetlfolia. Gray, 1. c. ( C. tanacrAlfnlin, Gray, Proc. Am. Acad. vi. 54.J). proves to be only 

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

 San Bernardino Co. ; first coU. by Hartxveg. 



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

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



