AMARANTHACEAE (AMARANTH FAMILY) 125 
Means of control 
Prevent seed production. In meadows or permanent pastures 
every stalk should be closely cut or hand-pulled- before the flower- 
spikes develop. Cultivated ground should not be neglected in the 
latter part of the season, for it is the late-blooming plants that 
usually seed the soil. Potato and corn land should be plowed or 
well disked after harvest, and a winter crop sown which will keep 
down the weed. 
WATER HEMP 
Acnida tuberculdta, Moq. 
Native. Annual. Propagates by seeds. 
Time of bloom: July to September. 
Seed-time: August to October. 
Range: Vermont and Massachusetts to 
Manitoba and the Dakotas, southward 
to Louisiana and New Mexico. 
Habitat: Wet meadows, swamps, and 
marshes, sides of ditches. 
Water Hemp has somewhat the ap- 
pearance of a large, succulent Amaranth. 
Stem smooth, erect, sometimes nearly 
an inch in diameter at the base and at- 
taining ten feet or more in height, but 
more often three to six feet tall, with 
many slender, flexuous branches. Leaves 
two to six inches long, lance-shape ap- 
proaching to rhombic, gntire, smooth 
but with prominent pinnate veins, and 
pointed at both ends; petioles slender 
and shorter than the blades. Flowers 
dicecious, in dense terminal or axillary 
spikes, sometimes interrupted and leafy, 
each small and greenish blossom guarded 
by one to three awl-like bracts. The 
sterile flowers have five stamens and 
five sharp-pointed, erect, one-nerved 
sepals, longer than the rigid bracts; the tc. 73. — Water Hemp 
pistillate flowers are without a calyx and — (Aenida tuberculata). X }. 
