462 Oedeb 70.— CWMPOSIT^. 



pmnately or bipimmtely parted, segments JUiform, linear, obtuse; raya acute 6r (ja. 

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

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

 vertieillate 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 the summit ; Ivs. sessile, deeply i-clefl {to Mow the middle), rigid, lobea 

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

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

 sia, Spreng.) 



12 C. trfpteris L. Glabrous ; st, simple, tail, 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 'Westem States, common. Stem 4 — 8f high, slender, 

 terete. Divisions of the leaves 3 — 5' by | — li'. Eays spreading .J' long. Outer 

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

 sostemma. Less.) 



13 C. grandifldra 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 ; rays 4 to S>-cleft at apex. — Mo. to Ala. 

 and Tex. Plant If high. Hds. much like No. 12. 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. 

 BUborbicular, with 2 small teeth. — y Native of the Southern States. Heads 

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



15 C. auriouldta L. Pubescent; lower Ivs. roimdish-ovaie, 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 Iva 

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



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

 unequally toothed, petiolate, the upper ovate-oblong ; hds. small ; rays 5 to S, en- 

 tire ; outer scales 4 to 6, linear, spreading. — Mts., N. Car. to Ga. Plant with am- 

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



17 C. argita 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. (IPursh), W. Ga., 

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

 to 3' long. Eays spreading 1 i'. (Root lvs. not seen). May— Jn. 



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

 or simple ; divisions ovate, lanceolate and lance-Unear, 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, corymbed. Ach. 2" long. Aug., Oct. 



19 C. aristosa Mx. Sparingly puheacent ; lvs. pinnately 5 to 9-parted, segmerds 

 lance-linear, iuoisely serrate or pinnatifid ; hds. small, with conspicuous rays ; outer 

 iiwol. of 10 to 12 linea/r, green scales longer than the inner, villous at base ; awns 

 slender, spreading, about as long as the achmium. — ® Low woods, "W". States. St 

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

 8, orange-yellow, expanding 1|^'. (C. involucrata Nutt.) 



20 C. trichosp^rma Mx. St. glabrous, square, dichotomous ; lvs. pinnately 5 to 

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

 iavol. ciliate, linear, long as the inner ; rays entire, large ; ach. narrow-cuneaie, 

 with 2 short, stout awns. — ® In wet grounds, N. Y., Mass. to Gar. A smooth, 



