492 



COMPOSITAE. 



VOL. III. 



7. Coreopsis palmata Nutt. Stiff Tick- 

 seed. Fig. 4498. 



Coreopsis palmata Nutt. Gen. 2: 180. 1818. 



Perennial ; stems rigid, glabrous, simple, or 

 little branched, very leafy, i-3 high. Leaves 

 sessile, 2'-3' long, palmately deeply 3-lobed at or 

 below the middle, or the uppermost entire, thick, 

 rigid, the lobes linear-oblong, obtusish, entire, 

 or with 1-3 lateral lobes, their margins rough ; 

 heads few or solitary, short-peduncled, i -2' 

 broad ; involucre hemispheric, its bracts some- 

 what united at the base, those of the outer series 

 narrower and nearly as long as the inner ones ; 

 rays 6-10, bright yellow, oblong or obovate, most- 

 ly 3-toothed ; achenes oblong, narrowly winged, 

 slightly incurved; pappus of 2 short tips, or none. 



On dry prairies and in thickets, Indiana to Mis- 

 souri, Louisiana, Minnesota, Manitoba, Nebraska and 

 Texas. June-July. 



8. Coreopsis major Walt. Wood or Greater 

 Tickseed. Fig. 4499. 



Coreopsis major Walt. Fl. Car. 214. 1788. 

 Coreopsis senifolia Michx. Fl. Bor. Am. 2 : 138. 1803. 

 Coreopsis Oemleri Ell. Bot. S. C. & Ga. 2 : 435. 1824. 

 Coreopsis Stella a Nutt. Journ. Acad. Phil. 7 : 76. 1834. 

 Coreopsis senifolia var. stellata T. & G. Fl. N. A. 2 : 

 342. 1842. 



Perennial; stem pubescent or glabrous, branch- 

 ed above, 2-3 high. Leaves sessile, more or 

 less pubescent, or glabrous, divided to the base 

 into 3, lanceolate, linear, ovate-lanceolate or ob- 

 long, acute, entire segments 2'-4' long, 2" -12" 

 wide, which appear as if in verticils of 6; upper 

 and lower leaves (rarely all of them), undivided 

 and entire; heads several or numerous, slender- 

 peduncled, i'-2' broad; bracts of the hemispheric 

 involucre all united at the base, the outer ones 

 linear-oblong, obtuse, equalling or shorter than 

 the broader inner ones, all pubescent; rays 6-10, 

 yellow, oblong, entire; disk yellow; achenes ob- 

 long to elliptic, winged, i"-2 ' long ; pappus of 2 

 short deciduous teeth. 



In dry sandy woods, Virginia to Kentucky, Florida 

 and Alabama. July-Aug. Consists of several races, 

 differing in pubescence and in shape and width of the 

 leaf-segments. 



9. Coreopsis verticillata L. Whorled 

 Tickseed. Fig. 4500. 



Coreopsis verlicillata L. Sp. PI. 907. 1753. 



Perennial; stem stiff, much branched, slender, 

 leafy, i-2 high. Leaves sessile, glabrous, 2-3- 

 ternately dissected into linear-filiform entire seg- 

 ments; heads numerous, I'-i^' broad; involucre 

 hemispheric, or short-cylindric in fruit, glabrous, 

 its outer bracts linear, obtuse, commonly some- 

 what shorter and much narrower than the ovate- 

 oblong inner ones; rays 6-10, yellow, spatulate- 

 oblong, obtuse; disk dull yellow; achenes oblong, 

 narrowly winged, 2" long; pappus of 2 short 

 teeth. 



In dry soil, Maryland to South Carolina, Kentucky, 

 Nebraska and Arkansas. Apparently erroneously re- 

 corded from farther north. June-Sept. 



