126 AMARANTHACEAE (AMARANTH FAMILY) 



have a one-celled, one-seeded ovary with two to five plume- 

 like stigmas. The small, shining seed drops from its place 

 while still enclosed in an egg-shaped, valveless, and tuberculate 

 Utricle, which makes it buoyant and easily distributed by wind 

 and water. (Fig. 78.) 



Means of control 



Prevention of seed development by close cutting or pulling while 

 in early bloom. Drainage and cultivation of the ground. 



JUBA'S BUSH 



Ireslne paniculata, Ktze. 



Other English name: Blood-leaf. 



Introduced. Annual. Propagates 

 by seeds. 



Time of bloom: July to September. 



Seed-time: August to October. 



Range: Ohio to Kansas, and south- 

 ward to the Gulf of Mexico. 



Habitat: Dry fields, meadows, and 

 waste places. 



A very conspicuous weed because 

 of its white flowers and the red color 

 which the foliage often assumes. It 

 is a native of tropical America and 

 seems to have a preference for sterile, 

 sandy, or gravelly soils, into which 

 its roots bore deeply, appropriating an 

 undue share of the little food and 

 moisture available. 



Stem erect, furrowed, swollen at 

 the nodes, slender, branching, two to 

 five feet in height. Leaves opposite, 

 narrowly ovate, long-pointed, be- 

 coming lance-shape near the top, 

 smooth and entire, with short, slen- 



79. _ j u ba's Bush (Iresine der petioles. Flowers in large termi- 

 paniculata). x i. nal, branching, nearly leafless panicles, 



