Obder 10.— composite. 451 



5 Corollas of the disk diirk [lurplc. (a) 



a Ray flowers yellow with a purple base. Acbenia incurved Nos. 1 , 2 



a Ray flowers wholly yellow. Achenia not Incurved, 2-awned Nos. 8—6 



§ Gorollns of the disk yellow. Kays rose-colored. Leaves simple Nos. 6, 7 



S Corollas of the disk and ray all yellow (disk brownish in No. 9). (b) 



b Leaves sessile, divided often so as to appear verticillate Nos. S— 11 



b Leaves petiolate, never serrate,— pinnate with lance-linear segments. Nos. 12, 13 

 —simple, or rarely auricled below. . .Nos. 14—15 



b Leaves petiolate, serrated. — simple ; achenia awns obsolete Nos. 10—17 



—compound. — BaysaboutS Nos. 18 — 20 



— Rays wanting No, 21 



1 C. Drummondii Torr. & Gr. Pubescent; Ivs. pinnately divided, sometimes 

 simple, segments {or leaves) oval, entire ; scales lanoeolate-acumiaate ; rays un- 

 equally 5-toot?ied, twice longer than the invol. ; ach. obovate, incurved, scarcely 

 toothed. — (D From Texas. St. 10 to 20' high. Rays large, yellow, with a pur- 

 ple spot at base, f (CaUiopsls, Don.) 



/?. ATEOS-iNGtriNEA. A garden variety with dark orange fls. f 



2 C. tinctoria Kutt. filabrona ; tos. alternate, radical ones subbipinnate, Ifta. 

 oblong-linear, entire, smooth, cauline subpinnate,- Ifts. linear ; rays 3-lobed at Hie 

 apex, aoh. wingless, toothless. — A handsome border annual, native of the upper 

 Missouri. St. 1 to 3f high, with light, smooth foliage. Hds. with yellow rays,' 

 beautifully colored with purple at their base. Flowering all summer, -j- {Calliop- 

 sis DC.) 



3 C. gladiita "Walt. Glabrous ; sL terete, Ivs. thickish, alternate, some of them 

 tertuUeVy divided, the lower lance-oblong, long-tapering to a clasping petiole, upper 

 lance-linear, acute ; outer scales lance-ovate ; ach. fringed with 2 slender awns. — 

 Moist soils in barrens, N. Car. to Pla. St. 2 to 3f high, slender. Hds. several, 

 corymbed ; rays 3-toothed at the dilated apex, yellow ; disk purple. Aug., Sept 



4 C. angustlfolia Ait. Glabrous ; si. square • Ivs. opposite, sometimes the lower 

 alternate, undivided, the lower spaiidale, long-petiolate, upper linear, spatulate, ob- 

 tuse ■ outer scales ovate, obtuse ; aoh. wing-fringed, the 2 awns very short. — Moist 

 soils, in barrens, N". Car. to Fla. and La. Sts. slender, 2f high. Hda. several, 

 corymbed, with*he rs-ys 3-lobed at the dUated summit. Jn. — Sept. 



5 C. CEmleri BU. Glabrous ; st. angular above ; Ivs. opposite, or the lower 

 alternate, lanoe-ovate, narrowed to a clasping petiole, upper lanceolate ; outer 

 scales oblong, obtuse ; a-ch. margined, ciliate, the 2 awns very short. — W. Ga. and 

 Fla., near the Chattahoochie. Sts. 2f high. Lvs. rather thick, entire, the upper 

 always opposite. Jl., Aug. 



6 C. rnidata Nutt. Glabrous, very slender ; lvs. few, terete, rush-like, aliemate, 

 the lower very long ; hds. few ; outer scales very short, obtuse, inner ovate, 

 acutish ; rays wedge-obovate, unequally crenate-lobed. — % A curious species, in 

 shady swamps, Ga. and Fla.,. near Savannah to St. Mary's and Apalaohioola. Sts. 

 2 to 3f high. Lvs. 1 to 10' long. Bays somewhat fan-shaped, rose-purple, 

 spreading 20". Apr. — Jn. 



7 C. rosea Nutt. St. branched ; lvs. opposite, l-vHned, linear, entire, ped. short ; 

 outer scales very short; rays oblong, obscurely tridentate. — 2( A very delicate 

 species in wet grounds, Mass. (Dr. Robbins), to N. J. St. slender, erect, 8 to 18' 

 high. Lvs. 1 to 2' long, scarcely 1" wide, clothing the stem. Hds. few, small. 

 Rays rose-color, varying to white. Disk light yellow. Jl, Aug. 



8 C. senifolia Mr. Minutely downy or glabrous; lvs. opposite, temate, sessile, 

 appearing in whorls of 6.; Ifts. ovate-lanceolate, sessile, acute, thick; scales downy, 

 obtuse ; rays oval-oblong, entire. — Sandy soils, Va., Ky.. to Ga., common. St. 1 

 to 2f high, angular, strict, slender. Rays bright yellow, 1' long. Corollas of 

 the disk yellow. JL, Aug. 



y8. STELLATA. Lfts. lance-Uniar, and even linear, mostly glabrous. — Ky. and 

 Tenn. Lvs. 2 to 3' long. (C. steUata Nutt.) 



9 C. delphinifolia Lam. Glabrous;, lvs. opposite, sessile, divided into lfts. which 

 are each again 2 to 5-partedf segm. linear, entire, acute ; disk corollas brown at 

 sunamit ; outer scales linear, inner ovate, all obtuse ; rays acute. — Barrens, Va. to 

 Fla. and Ala. St. 1 to 2f high. Lfts. 1 to 2' long, 1 to 3" broad. Hds. small. 

 Aug. 



10 C. vertioillata L, Glabrous branched lvs. 3-divided, closely sessile, divisions 



