172 PAPAVERACEAE (POPPY FAMILY) 
Seed-time: July to September. 
Range: Southern Pennsylvania and Ohio to Virginia, and south- 
ward. 
Habitat: Cultivated ground and waste places. 
Not a troublesome weed in this country, but called Corn Poppyin 
Europe, where wheat is called corn. It is similar to the preceding 
species but is taller and more slender, with pinnatifid leaves more 
finely divided and very hairy. Flowers two inches broad, light 
scarlet, on long and very bristly petioles. Capsule tapering from 
the base, smooth, club-shaped, the stigmatic cap at its top six- to 
ten-rayed and smooth. 
Means of control the same as for the Field Poppy. 
PRICKLY POPPY 
Argeméne mexicana, L. 
Other English names: Mexican Poppy, 
Thistle Poppy, Devil’s Fig. 
Introduced. Annual or biennial. Propa- 
gates by seeds. 
Time of bloom: June to September. 
Seed-time: August to November. 
Range: New Jersey, Ohio, and the Middle 
Western States, southward to Florida, 
Texas, Arizona, and southern California. 
Naturalized throughout the Tropics in 
Asia, Australia, the South Sea Islands, 
and Africa. 
Habitat: Fields, meadows, waste places. 
In some countries this plant is cultivated 
for the valuable painter’s oil expressed from 
its seeds, but in many parts of the United 
States it is a very troublesome weed, for, 
in addition to its exceeding prickliness, it 
is protected by bitter, yellow juices, said 
to be poisonous. 
Stem one to two feet high, stout, simple 
or with few branches, usually very prickly 
Fie. 118. — Prickly but sometimes nearly or quite unarmed. 
Poppy (Argemone mezi- Leaves four to eight inches long and half 
cana). Xt. as wide, glaucous, blotched with white, 
