452 ORDER 70. COMPOSITE. 



pinnately or bipinnately parted, segments filiform, linear, obtuse; rays acute or (is 

 cultivation) obtuse and 2 or 3-toothed; ach. obovate, slightly 2-toothed. H 

 Moist places, Md. and Western States. Stem 1 3f high. Leaflets apparently 

 verticillate in 6s. Heads with bright yellow rays, near 1' long. Outer scales 

 oblong-linear, obtuse, united at base. June Aug. 



11 C. palmata Nutt Nearly smooth ; st. branched, angled and striate, very 

 leafy to tho summit; Ivs. sessile, deeply 3-cleft (to below the middle), rigid, lobes 

 linear, acutish, entire or again cleft; rays obovate-oblong ; ach. linear-elliptic, in- 

 curved. Dry prairies, W. States. Stem 1 2f high, sometimes much branched. 

 Leaves 1 2f long, some of them undivided, lobes 24" wide. Heads 1 or 

 several, with yellow rays. Outer scales linear oblong, obtuse. Ju., JL (Calliop- 

 sis, Spreng.) 



12 C. tripteris L. Glabrous ; sL simple, tall, corymbous at summit ; Ivs. coriace- 

 ous, opposite, petiolate, 3 5-divided, divisions linear-lanceolate, entire, acute; 

 hds. small, on short peduncles, rays obtuse. A tall, smooth, elegant species, in 

 dry soils, Southern and Western States, common. Stem 4 8f high, slender, 

 terete. Divisions of the leaves 3 5' by | l-J-'. Rays spreading -J-' long. Outer 

 scales linear, obtuse, spreading, much smaller than tho inner, jl. Oct. (Chry- 

 sostemma, Less.) 



13 C. grandiflora Nutt. Glabrous ; st. low. simple or branched ; Ivs. petiolate, 

 lanceolate, mostly pinnately or teraately divided, segments lance-linear cr linear; 

 hds. solitary, on long peduncles, large ; rays 4 to 5-cleft at apex. Mo. to Ala. 

 and Tex. Plant If high. Hds. much like No. 14. Jl. Sept 



14 C. lanceolata L. St. ascending, often branched below; lower Ivs. ob- 

 lanceolate, petiolate, the upper lanceolate, sessile, all entire, with scabrous margins ; 

 hds. solitary, on very long, naked peduncles; rays 4 5-toothed at apex; ach. 

 suborbicular, with 2 small teeth. if Native of tho Southern States: Heads 

 showy. Rays about 8, 1' by '. Jn. Aug. f 



15 C. auriculata L. Pubescent; lower Ivs. roundish-ovate, petiolate, some of 

 them with 2 small, lateral segments at base (auriculate), the upper oblong, nearly 

 or quite sessile ; hds. few, on long peduncles ; outer scales oblong-linear. Dry 

 soils, Va., Ky. to Ga. and La. Plant 1 to 3f high, variable. At first (May, Jn.) 

 it has divided Ivs. and very long peduncles. Later (Jl., Aug.), it is tall, the Ivs. 

 all entire, the lower having perished. Hds. similar to No. 14. May Aug. 



16 C. latifolia MX. Very glabrous, tall; Ivs. thin, opposite, ovate, acuminate, 

 unequally tootlied, petiolate, tho upper ovate-oblong ; hds. small ; rays 5 to 6, en- 

 tire ; outer scales 4 to 5, linear, spreading. Mts., N. Car. to Ga> Plant with am- 

 ple Ivs. and few large, yellow rays. Aug. 



17 C. arg&ta Ph. Smooth or nearly so; sts. strict, striate-angled ; Ivs. of tho 

 stem simple, petiolate, ovato and ovate-lanceolate, acuminate, mucronate-serrate ; 

 hds. few, large, on slender, naked peduncles ; outer scales about 8, as long as tho 

 inner; rays 9 to 12, 3-clcft; ach. oblong, awns obsolete. Car. (Pursh), W. Ga., 

 in the upland districts. Differs much from C. aurea. St. 2 to 5f high. Lvs. 1 

 to 3' long. Rays spreading ]'. (Root Ivs. not seen). May Jn. 



18 C. aurea Ait. Nearly glabrous ; lower Ivs. pinnately divided, upper ternately. 

 or simple ; divisions ovate, lanceolate and lance-linear, acuminate, sharply serrate ; 

 outer scales about 8; linear as long as the 'inner; rays about 8, obtuse; ach. teeth 

 very short. !jj) Ditches, etc., N. Car. to Fla. and La. An untidy weed, 2 to 4f 

 high. Hds. small, corymbcd. Ach. 2" long. Aug., Oct. 



19 C. aristosa MX. Sparingly pubescent ; Ivs. pinnately 5 to 9-parted, segments 

 lance-linear, incisely serrate or pinnatifhl ; hds. small, with conspicuous rays ; outer 

 invol. of 10 to 12 linear, green scales longer than the inner, villous at base ; awns 

 slender, spreading, about as long as the achenium. Low woods, W. States. St 

 obtusely 4-angled, 2 to 3f high. Lvs. thin, 4 to 6' long, petioles to 1'. Rays 

 8, orange-yellow, expanding !'. (C. involucrata Nutt.) 



20 C. trichosperma MX. St. glabrous, square, dichotomous ; Ivs. pinnately 5 to 

 1-parted, briefly petiolate, segm. lanceolate, incised or serrate ; scales of the outer 

 invol. ciliate, linear, long as the inner; rays entire, large; ach. narrow-cuneatc, 

 vrith 2 short, stout awns. In wet grounds, N. Y., Mass, to Car. A smooth, 



