COMPOSITAE — FETID MARIGOLD 



785 



Dyssodia papposa (Vent.) Hitchc. Fetid Marigold. 



A nearly smooth branched annual from 6 inches-2 feet high ; leaves op- 

 posite, 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 few scales at the base, one row of 

 scales united to form a cup; achenes slender, 4-angled, pappus a row of chafify 

 scales finely divided into numerous rough bristles . 



Distribution. Common from western Iowa and Minnesota to Illinois and 

 the southwest. In this section of the country it occupies the same ground oc- 

 cupied by the Mayweed. 



Poisonous properties. It is a very disagreeable smelling herb. Not relished 

 by stock. It is probably injurious. 



Fig. 450. Fetid Marigold (Dyssodia 

 papposa). Pungent odor said to be in- 

 jurious. (Charlotte M. King.) 



Fig. 451. Dog Fennel (Antliemis Cot- 

 ula). Contains a pungent principle. 



19. Achillea (Vaill.) L. Yarrow 



Perennial herbs with erect leafy stems and finely dissected alternate leaves; 

 heads many flowered, radiate, in corymbose clusters, ray flowers few, white 



