472 COMPOSITAE (COMPOSITE FAMILY) 
é 
der, naked peduncles often a foot in length; disk florets 
perfect, fertile, the five-lobed corollas purplish brown; rays 
six to ten, neutral, bright yellow, broadest at apex, and three- 
lobed with the middle lobe notched. Involucre hemispheric, its 
bracts in two rows, the outer ones narrower than the inner and 
not so long. Achenes rounded oblong, broadly winged, crowned 
with two short teeth. (Fig. 328.) 
Means of control 
Prevention of seeding by repeated cutting, which will also 
finally starve the roots. Cultivation of the soil at once destroys 
the weed. 
TALL TICKSEED 
Coreépsis tripteris, L. 
Native. Perennial. Propagates by seeds. 
Time of bloom: July to October. 
Seed-time: August to November. 
Range: Pennsylvania to Wisconsin, southward to Florida and 
Louisiana. 
Habitat: Meadows, fence rows, open woods, and thickets. 
A tall, graceful species, common in Southern and Western States 
and sometimes cultivated and escaping in the East. Stem three to 
eight feet high, round, smooth, slender, branching at the top. 
Leaves opposite, three to six inches or more in length, thick, firm, 
the lower ones usually three-parted with entire, lance-shaped seg- 
ments ; upper leaves undivided, lance-shaped, entire, all with rough 
edges and pinnate veins. Heads very many, about an inch anda 
half broad, on slender peduncles, in open corymbose clusters ; rays 
six to ten, obtuse, entire, bright golden yellow; disks brownish ; 
outer bracts of the involucre linear, obtuse, spreading, united at 
base, much narrower than the ovate, pointed, inner ones; when 
rolled between the fingers the heads exhale the odor of anise. 
Achenes oblong elliptic, narrowly winged, and without a pappus. 
Means of control 
Prevention of seeding and starvation of the roots by persistent 
cutting. Hand-pulling or grubbing out the roots. 
