COREOPSIS 



COREOPSIS 



845 



A. Rays cuneate, Lobed. 

 B. Disk yellow; rays rose-purple. 



1. rosea, Nutt. Perennial: diffusely branched from 

 slender, creeping rootstocks, 1-2 ft. high, smooth: 

 Ivs. all narrowly linear, entire or with a few linear 

 teeth or lobes: heads small, about 1 in. broad or less, 

 short-peduncled; rays narrowly wedge-shaped, lobed 

 at the apex: achene narrowly oblong, wingless; pappus 

 an obscure border. Mass, to Ga. 



BB. Disk and involucre dark purple; rays yellow or parti- 

 colored, wedge-shaped and lobed. 

 c. Outer involucral bracts very short, lanceolate or 



triangular. 



D. Lvs. entire: achenes with lacerate wings and setiform 

 pappus. 



2. angustifolia, Ait. (C. dichotoma, Michx. C. lini- 

 fdlia, Nutt.). Perennial: strict and tall, 1-3 ft. high, 

 glabrous, sparsely branched at the summit: Ivs. entire, 

 thickish; basal oblanceolate to narrowly spatulate, long- 

 petioled ; lower cauline elliptical on long petioles ; upper 

 narrowly spatulate or linear, sessile or reduced to bracts: 

 heads 1-1 ^ in. broad; rays entirely yellow. S. U. S. 



DD. Lvs. divided: achenes and pappus not as above. 



3. cardaminefolia, Torr. & Gray. Annual: low and 

 diffusely much branched from the base, 6-24 in. high, 

 glabrous: numerous basal and lower cauline Ivs. peti- 

 oled, pinnatifid, divisions several pairs, short, oval, 

 elliptical, rarely linear, often again divided; upper 

 cauline nearly sessile with narrower and fewer divi- 

 sions: heads as in No. 5, but smaller, and often entirely 

 dark: achenes broader, winged; pappus minute or 

 none. S. U. S. Gn. 29, p. 498; 37, p. 203. 



4. Atkinsoniana, Douglas. Perennial or annual: st. 

 tall, 2-4 ft. high: Ivs. pinnatifid, the divisions linear: 

 heads as in the next: achenes with narrow wing or 

 scarious margin; pappus composed of 2 short, subu- 

 late teeth. Autumn-flowering. S. W. U. S. B.R. 1376. 



1056. Coreopsis lanceolate. 

 (XK) 



1055. Coreopsis tinc- 

 toria Calliopsis elegans 

 of gardens. ( X 1 A) 



5. tinct&ria, Nutt. (C. tricolor, Reichb. C. elegans, 

 Hort. Calliopsis marmordta,Jiort.). Fig. 1055. Annual: 

 st. tall, strict, 1-3 ft. high, branched, glabrous: basal 

 Ivs. few or wanting; cauline petioled, the upper sessile, 

 pinnatifid, divisions from narrowly elliptical to often 

 again divided and 



narrowly linear: 

 heads %-l %, rarely 

 2, in. broad; rays 

 with dark purple 

 base : achenes ob- 

 long, wingless; pap- 

 pus none. Cent. 

 U. S. B.M. 2512 

 B.R. 846. Mn. 1, 

 p. 85. A common garden 

 annual; showy and good. 

 Var nana, Hort. Dwarf, 

 low and compact. Gn. 29, 

 p. 499. Tom Thumb va- 

 rieties. Var. atropurpftrea, 

 Hook. (C. nigra, Hort.). 

 Rays almost entirely dark. 

 B.M. 3511. 



cc. Outer involucral bracts 

 narrowly linear, about 

 equaling the inner. 



6. Drummondii, Torr. 

 & Gray (C. diversifolia, 

 Hook. C. picta, Hort.). 

 GOLDEN WAVE. Annual: 

 st. branched above, 10-24 

 in. high: Ivs. petioled be- 

 low, sessile above, pin- 

 natifid, divisions few, 



short, broadly elliptical, those of the upper Ivs. linear: 

 heads 1-2 in. broad, large; rays usually dark at the 

 base: achene oval, wingless, margin cartilaginous in- 

 curved; pappus none. Texas. B.M. 3474. S.B.F.G. II. 

 4:315. Gn. 26, p. 461; 29, p. 498; 37, p. 203; 43, p. 

 397. G.M. 54:13. G. 16:58 



BBB. Disk yellow or brown; rays entirely yellow (except 

 No. 7); peduncles long. 



c. Style-branches acute or obtusish, not acuminate: dark 

 lines at base of rays. 



7. coronata, Hook. Annual: low and often weak, 12- 

 24 in. high, much branched from the base, sparsely 

 hirsute: Ivs. thick; the basal usually numerous, peti- 

 oled, pinnatifid or entire, divisions elliptic, rather 

 obtuse, lateral divisions smaller; the cauline Ivs. few, 

 spatulate, often entire: heads 1^-2 in. broad; rays 

 with a few dark lines above the orange base; outer 

 involucre a third to a half shorter than the inner: 

 achene orbicular, broadly winged, often echinate, with 

 a thickened callus at base and apex on inner face; 

 pappus very minute. Texas. B.M. 3460. S.H. 1:270. 

 Gn. 26, p. 461; 29, p. 499. 



cc. Style-branches cuspidate-acuminate: rays entirely 

 yellow. 



8. pubescens, Ell. (C. auriculdla, Schkuhr & Hort., 

 not Linn.). Perennial: tall, 1-4 ft. high, branched 

 above, pubescent or nearly glabrous, leafy throughout: 

 Ivs. thickish, oval to lanceolate, very acute, petioled 

 or nearly sessile, entire or with small, acute, lateral 

 lobes; basal few: heads 1M-2H m - broad; outer 

 involucre nearly as long as the inner: achenes and 

 pappus similar to those of the next species. S. U. S. 

 Gri. 37, p. 202. 



9. lanceolata, Linn. Fig. 1056. Perennial: low, 1-2 

 ft. high, sparingly branched, glabrous or nearly so, 

 leafy toward base: Ivs. few, large, oblong-spatulate to 

 linear, petioled, barely acute, upper entire, lower 

 usually pinnatifid, divisions very distant: heads \Yr~ 



