COMPOSITAE (COMPOSITE FAMILY) 465 
Seeed-time: June to September. 
Range: Minnesota to the Northwest 
Territory, southward to 
Texas and Arizona. Also in Tennessee and locally in the Eastern 
States. 
Habitat: Meadows, roadsides, and waste land. 
Like its relatives, the Black-eyed Susan 
and Purple Cone-flower, this plant has 
been introduced in a number of widely 
separated localities by the agency of 
western baled hay and grass seeds. 
Stem one to nearly three feet tall, 
branching from the base, slender and 
beset with stiff, bristly hairs. Leaves 
alternate, dark green, thick, rough-hairy, 
strongly ribbed, pinnately divided into 
narrow, long-pointed segments; those 
on the stem are sessile or have very 
short petioles; those at the base have 
long, slender petioles and fewer seg- 
ments; occasionally some are undi- 
vided and oblong. The heads have 
an elongated, cone-shaped, or nearly 
cylindrical disk, often more than an 
inch in length, set with grayish brown 
florets, perfect and fertile, the corollas 
five-lobed but with very short tubes; 
rays neutral, four to ten in number, large 
and drooping, yellow with a brownish 
purple base or wholly of the darker 
color. Achenes short and flattened, with 
Fig. 325. — Prairie Cone- 
flower (Lepachys columnaris). 
Xt 
winged margins, and a pappus of one or two awl-like teeth. (Fig. 
325.) 
Means of control should be the same 
flower. 
as for the Purple Cone- 
COMMON SUNFLOWER 
Helidnthus énnuus, L. 
Native. Annual. Propagates by seeds. 
Time of bloom: July to September. 
2H 
