242 



WEEDS OF THE FARM AND GARDEN 



acuminate at the apex; heads numerous, many-flowered, 

 radiate; rays yellow, wedge shaped, three to five-cleft, 

 fertile ; disk-flowers yellow, involucre small, reflexed ; 

 scales linear or awl-shaped ; receptacle glabrous or ob- 

 long; achenes pubescent on the angles; scales of the 

 pappus ovate, acuminate; the variety grandiflorum has 



larger heads, scales of the pap- 

 pus narrower and larger 

 awned. Common in low mead- 

 ows and alluvial river banks 

 from eastern Canada to South 

 Dakota and from Florida to 

 Alabama ; especially common 

 in the northern Mississippi 

 Valley to Kansas. 



Narrow-leaved Sheezeweed 

 (Helenium tenuifolium, Nutt.). 

 A perennial, erect, branch- 

 ing herb from one and one-half 

 to two and one-half feet high; 

 leaves alternate, decurrent on 

 the stem, linear, filiform ; flow- 

 154. Beggar-ticks ers borne in corymbed clus- 

 frondosa). (C. M. ters; heads man y-flowered ; 



ray-flowers yellow, fertile, 

 disk-shaped, ribbed ; pappus of one-nerved, chaffy scales, 

 the nerve extended into a point. Common from Texas to 

 Missouri, Florida and Virginia, especially in pastures, 

 roadsides and meadows; said to have been widely scat- 

 tered after the Civil War. 



Fetid Marigold (Dysodia papposa, (Vent.) Hitchc.). 

 A nearly smooth, branched annual from six inches to two 

 feet high; leaves opposite, sessile, pinnately parted, 

 bristly toothed, with large pellucid glands, which give to 

 the plant a strong odor; heads many-flowered; rays 

 small, yellow, pistillate; disk yellow; involucre with a 



Fig. 

 (Bidens 

 King.) 



