202 WEEDS OF THE FARM AND GARDEN 



mucilaginous. Extensively cultivated in the South and 



frequently persistent as a bad weed. 



The Shoo-fly or Bladder Ketmia (H. Trionum, L.). 



Is a low, rather hairy annual, upper leaves three-parted ; 



fruiting calyx inflated ; membranaceous, five-winged ; 



corolla sulphur yellow with a blackish eye; flower lasts 



a short time only. Native to Europe, but has become 

 very common in Texas and other 

 southern states as well as in the 

 North. 



Spanish Bur (Urena lobata, L.). 

 A shrubby, tomentose herb with 

 rigid branches and pubescent foli- 

 age ; leaves alternate, blades angled 

 or lobed, orbicular-reniform or oval 

 on upper part of stem, shallowly 

 three to five-lobed, serrulate, cordate 

 or rounded at the base, whitish and 

 prominently nerved beneath ; peti- 

 oles shorter than the blades ; flowers 

 in racemes, perfect, often inconspic- 

 uous, sessile or short peduncled in 

 the axils of the leaves; bractlets of 



. . Shoofly involucel five to seven, linear-lanceo- 



(Hibiscus Trionum). . , ~ . , , 



late; petals five, pink or rose-col- 

 ored, very delicate ; sepals five, united below, often adnate 

 to the involucel, about as long as the bractlets, often 

 ovate, acute ; carpels bristly, subglobose. In waste places 

 in Florida and as far west as Alabama. Naturalized from 

 Europe. 



St. John's-wort Family (Hypericaceae). Shrubs or 

 herbs with opposite, entire, chiefly sessile leaves, punc- 

 tate with translucent and occasionally blackish dots ; 

 perfect flowers ; few to many stamens arranged in clus- 

 ters, usually three to five ; pod one to seven-celled, filled 

 with numerous small seeds ; juice both acrid and resinous. 



