452 Oeder 70.— composite. 



prnnately or Mpmnately parted, segments filiform, linear, oUuse; rays acute or (in 

 cultivation) obtuse and 2 or 3-tootlied; ach. obovate, slightly 2-toothed. — y 

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

 verticillate in 63. Heads with bright yellow rays, near 1' long. Outer scales 

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



11 C. palm^ta Nutt. .Nearly smooth ; sf. branched, angled and striate, very 

 leafy to the summit ; Ivs. sessile, deeply Z-deft (to below fhe middle), rigid, lobes 

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

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

 Leaves 1 — 2^' long, some of them undivided, lobes 2 — 4" wide. Heads 1 or 

 several, with yellow rays. Outer scales linear oblong, obtuse. Jn., Jl. (OaUiop- 

 sig, Spreng.) 



12 C. tripteris L. Glabrous ; st. simpler taU, corymbous at summit ; Ivs. coriace- 

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

 feds, 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 f — 1-J-'. Eays spreading -J-' long. Outer 

 scales linear, obtuse, spreading, much smaller than the inner. JL — Oct. (Ohry- 

 sostemma. Less.) 



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

 lanceolate, mostly pinnately or temately divided, segments lance-linear or linear: 

 hds. solitary, on long peduncles, large ; raiys i to 6-clefi at apex. — Mo. to Alai 

 and Tex. Plant If high. Hds. much lilce No. 12. Jl.— Sept. 



14 C lancealita L. Si. 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 the Southern States. Heads 

 showy. Eays about 8, 1' by J'. Jn. — ^Aug. f 



ISC. auricul^ta L. Pubescent ; lower Ivs. rovrndish-ovate, petiolate, some of 

 them with 2 small, lateral segments at base (aurioulate), the '%per oblong, nearly 

 or quite sessUe ; hds. few, on long peduncles ; owter scales oblong-limar. — ^Bry 

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

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

 all entire, the lower having perished. Hds. similar to No. 12. May — ^Aug. 



.16 C. latifdlia Mx. Very glabrous, tall; Ivs. thin, opposite, ovate, cucvminate, 

 tmeqnaUy toothed, petiolate, the upper ovate-oblong ; hds. small ; rays 5 to 6, e»- 

 tire ; outer scales 4 to 5, iinewr, spreading. — .Mts., N. Car. to Gra. Plant with am- 

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



-17 C. argiita Ph. Smooth or nearly so; sts. strict, striate-angled ; Ivs. of the 

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

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

 inner; rays 9 to 12, 3-oleft; 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 1 ^. (Boot lvs. not seen). May — Jn. 



18 C. aiirea Ait. Nearly glabrous ; lower lvs. pinnately divided, upper temately, 

 or simple ; divisions ovate, lakceolate and lance-liuear, acuminate, sharply serrate ; 

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

 very short.—® Ditches, etc., N. Car. to Fla. and La. An untidy weed, 2 to 4f 

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



.19 C. ariatdsa Mx. Sparingly pubescent; lvs. pinnatoly 6 to 9-parted, segments 

 lance-linear, inoisely serrate or pinnatifld ; hd.s. 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. — (D Low woods, W. Statea St. 

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

 8, orange-yellow, expanding If. (C. involuorata Nutt.) 

 20 C. trichosp^rma Mx. St. glabrous, square, diohotomoua; lvs. pinnateiy 5 to 

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

 invol. ciliate, linear, long as the inner ; I'ays entire, large ; ach. narrow-cuneate, 

 with 2 short, stout awns.—(^ In wet grounds, N. T., Mass, to Gar. A smooth, 



