132 NYCTOGINACEAE (FOUR-O’CLOCK FAMILY) 
Seed-time: July to September. 
Range: Minnesota to Utah, southward to Mexico, Texas, and 
Missouri to the Carolinas. 
Habitat: Prairies; dry, sandy fields and meadows. 
Taller than either of the preceding species, the stem varying 
in height from one to four or more feet, erect, slender, round or 
only slightly angled near the base, smooth, glaucous, branching, 
and somewhat swollen at the nodes. Leaves one to three inches 
long, linear, thick, smooth, one-nerved, sessile or the lower ones 
short-petioled with obtuse tips, the upper ones distant and acutely 
pointed. Flower-stalks and involucres sparsely covered with 
ono hairs, the latter obtusely five-lobed and about three- 
flowered; perianth also finely hairy, purple, 
bell-shaped, with stamens and style exserted 
beyond the five obtuse lobes. Seed very small, 
hard and nut-like, oblong obovoid, with five 
hairy ribs, the spaces between covered with 
minute tubercles. 
Means of control the same as for the two pre- 
ceding species. 
HOGWEED 
Boerhadvia erécta, L. 
Introduced. Annual. Propagates by seeds. 
Time of bloom: June to November. 
Seed-time: July to December. 
Range: South Carolina to Florida, Texas, and 
Mexico. 
Habitat: Cultivated crops, meadows, and waste 
places. 
A native of tropical America now very com- 
mon in the rich bottom lands of the Southern 
Seaboard and Gulf States. Stems one to ,three 
feet tall, smooth, diffusely branched from the 
base, spreading wider than its height. Leaves 
Fra. 85,—Hog- 7° to three inches long, opposite, ovate or 
weed (Boerhaavia sometimes heart-shaped, rather thick in texture, 
erecta). Xt. with slender petioles, scalloped or wavy edges, 
