GENUS 70. THISTLE FAMILY. 493 
to. Coreopsis delphinifolia Lam. Lark- 
spur Tickseed. Fig. 4501. 
Coreopsis delphinifolia Lam. Encycl. 2: 108. 1786. 
Perennial ; stem glabrous, branched above, rather 
slender, 1°-3° high. Leaves sessile, 1-2-ternately 
partly. into linear or linear-lanceolate segments, 
which are 17-2’ long, 1-3” wide; heads several 
or numerous, 14’-2’ broad; involucre hemispheric, 
its bracts glabrous, the outer linear-oblong, ob- 
tuse, shorter than or equalling the ovate-oblong 
inner ones; rays 6-10, yellow, entire; disk brown; 
achenes oblong to oval, narrowed at the base, 
narrowly winged; pappus of 2 short teeth. 
In dry woods, Virginia (according to Torrey and 
Gray), North Carolina to Georgia and Alabama. 
Aug.—Sept. 
11. Coreopsis cardaminefélia (DC.) T. & G. 
Cress-leaved Tickseed. Fig. 4502. 
Calliopsis cardaminefolia DC. Prodr. 5: 568. 1836. 
C. cardaminefolia T. & G. Fl. N. A. 2: 346. 1842. 
Annual; stem glabrous, branched, 1°-22° high. 
Basal leaves petioled, 2’-4’ long, 1-2-pinnately parted 
into oblong or oval obtuse segments, the petioles 
sometimes slightly ciliate; stem leaves distant, ses- 
sile, or nearly so, pinnately parted into linear seg- 
ments, or the uppermost entire; heads 8’-12” broad, 
slender-peduncled; involucre hemispheric, its inner 
bracts brown, ovate or ovate-lanceolate, obtuse or 
obtusish, scarious-margined, much longer than the 
lanceolate obtusish outer ones; rays 4-8, yellow with 
a brown base, 3-toothed; achenes oval, 1”-13” long, 
winged, smooth, or slightly papillose; pappus of 2 
minute awns, or none. 
In moist soil, Kansas to New Mexico, Louisiana and 
northern Mexico. May-Oct. 
Coreopsis Atkinsoniana Dougl., a northwestern 
species, with linear leaf-segments and _very narrowly 
winged achenes, ranges eastward into North Dakota. 
12. Coreopsis tinctoria Nutt. Golden Co- 
reopsis. Garden Tickseed. Fig. 4503. 
C. tinctoria Nutt. Journ. Acad. Phila. 2: 114. 1821. 
Annual; stem glabrous, branched, 1°-32° high. 
Leaves 1-2-pinnately divided into linear, obtusish, 
mostly entire segments, or the uppermost linear and 
entire, the lower petioled; heads slender-peduncled, 
10’-12” broad, or in cultivation much broader; invo- 
lucre hemispheric, its inner bracts brown, ovate or 
oblong, obtuse or acute, scarious-margined, 3-5 times 
as long as the obtuse outer ones; rays 6-10, cuneate, 
yellow with a brown base or brown all over; achenes 
linear or linear-oblong, about 1” long, wingless; pap- 
pus a mere border, or none. 
In moist soil, Minnesota to Alberta, Nebraska, Louisi- 
ana and Arizona. Escaped from gardens to roadsides 
and waste places eastward. Wild flax. Nuttall’s-weed. 
May-Sept. 
