99 8 FLORA. 



4. Leaves, or most of them, i-2-parted into linear segments; rays lobed. 



12. C. grandiflora. 

 5. Leaves petioled, all but the upper pinnately 3-s-divided ; rays entire. 



13. 6'. tripteris. 



1. Coreopsis rosea Nutt. SMALL ROSE OR PINK TICKSEED. (I. F. .3925.) 



Perennial by slender rootstocks; stems at length much branched, slender, strict, 

 glabrous, 1.5-6 dm. high. Leaves opposite, glabrous, obscurely I -nerved, 3-6 cm. 

 long, 1-3 cm. wide, sessile, or the lower petioled; heads slender-peduncled, several 

 or numerous, 12-25 mm. broad; disk yellow; rays 4-8, oblong to obovate, slightly 

 3-toothed or sometimes entire; inner bracts of the hemispheric involucre ovate- 

 oblong, glabrous, much longer than the lanceolate outer ones; style-tips truncate; 

 achenes oblong or linear-oblong, thin, not winged, slightly ribbed on the inner face ; 

 pappus a very short truncate crown. In open swamps, eastern Mass, to Ga., near 

 the coast. July-Aug. 



2. Coreopsis cardaminefolia <DC.) T. & G. CRESS-LEAVED TICKSEED. 

 (I. F. f. 3926.) Annual; stem glabrous, branched, 3-8 dm. high. Basal leaves 

 petioled, 5-10 cm. long; stem-leaves distant, sessile or nearly so. pinnately parted 

 into linear segments, or the uppermost entire; heads 16-25 mm. broad, slender- 

 peduncled; involucre hemispheric, its inner bracts brown, ovate or ovate-lanceo- 

 late, obtuse or obtusish, scarious-margined, much longer than the lanceolate obtus- 

 ish outer ones; rays 4-8, 3-toothed; achenes oval, 2-3 mm. long, winged, smooth, 

 or slightly papillose; pappus of 2 minute awns, or none. In moist soil, Kans. to 

 N. Mex., La. and northern Mex. May-Oct. 



3. Coreopsis tinctoria Nutt. GARDEN TICKSEED. (I. F. f. 3927.) Annual; 

 stem glabrous, branched, 3-10 dm. high; heads slender-peduncled, 20-25 mm - 

 broad, or in cultivation much broader; involucre hemispheric, its inner bracts 

 brown, ovate or oblong, obtuse or acute, scarious-margined, 3-5 times as long as 

 the obtuse outer ones; rays o-io, cuneate, yellow with a brown base or brown all 

 over; style-tips truncate; achenes linear or linear-oblong, about 2 m. long; pappus 

 a mere border, or none. In moist soil, Minn, to the N. W. Terr., south to Neb., 

 La. and Ariz. Escaped from gardens to roadsides and waste places eastward. 

 May-Sept. 



4. Cpreopsisjpalmata Nutt. STIFF TICKSEED. (I. F. f. 3928.) Perennial, 

 stems rigid, glabrous, simple or little branched, very leafy, 3-9 dm. high. Leaves 

 sessile, 5-7 cm. long, the uppermost entire, thick, rigid, the lobes linear-oblong, 

 obtusish, entire, or with 1-3 lateral lobes, their margins rough; heads few or soli- 

 tary, short-peduncled, 3-5 cm. broad; involucre hemispheric, its bracts somewhat 

 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, mostly 3-toothed; achenes 

 oblong, narrowly winged, slightly incurved; pappus of 2 short tips, or none. On 

 dry prairies and in thickets, 111. to La., west to Minn., Manitoba, Neb. and Tex. 

 June-July. 



5. Coreopsis major Walt. WOOD, OR GREATER TICKSEED. (I. F. f. 3929.) 

 Perennial; stem pubescent, branched above, 6-9 dm. high. Leaves more or less 

 pubescent, or glabrous, divided into 3, segments 5-10 cm. long, 8-25 mm. wide, 

 which appear as if in verticils of 6; the upper and lower leaves (rarely all of them) 

 undivided and entire; heads several or numerous, slender-peduncled, 3-5 cm. 

 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 pubes- 

 cent; rays 6-10, oblong, entire; disk yellow; achenes oblong to elliptic, winged. 

 1-4 cm. long ; pappus of 2 short deciduous teeth. In dry sandy woods, Va. and 

 N. Car. to Fla. and Miss. July-Aug. 



Coreopsis mijor Oemleri (Ell.) Britton. Plant glabrous throughout; leaf-segments 

 often narrower. Va. and W. Va. to Ga. 



6. Coreopsis delphinifolia Lam. LARKSPUR TICKSEED. (I. F. f. 3930.) 

 Perennial, stem glabrous, branched above, rather slender, 3-9 dm. high. Segments 

 3-5 cm. long, 2-6 mm. wide; heads several or numerous, 4-6 cm. broad; involucre 

 hemispheric, its bracts glabrous, the outer linear-oblong, obtuse, shorter than or 

 equalling the ovate -oblong inner ones; rays 6-io, entire; disk brown; achenes 



