116 CHENOPODIACEAE (GOOSEFOOT FAMILY) 



bracts, which are united at base and often tubercled on their sides. 

 Seed compressed, vertical ; often an impurity of other seeds. 

 (Fig. 70.) 



The plant is very variable ; one of its forms, the Halberd-leaved 

 Orache (A. patula, var. hastata, Gray), is more common than the 

 type, ranging from the Great Lakes across the continent and south- 

 .ward to Nebraska and Utah. It is stouter, more erect, the leaves 

 broadly halberd-shaped and often coarsely and irregularly toothed, 

 particularly the lower ones, the petioles often as long as the blades. 

 (Fig. 71.) These weeds are subject to the mildew so injurious to 

 garden spinach and beets, and will infect those vegetables if grow- 

 ing near them. Like the Goosefoots, their seeds retain vitality for 

 a number of years when in the soil. 



Means of control 



Hand-pulling while in early bloom is the best remedy ; cutting 

 causes the stems to stool freely, and the new growth hastens to 

 mature fruit, requiring attention a second time ; so that prompt up- 

 rooting saves trouble in the end. In cultivated crops these plants 

 give little trouble, for there they are usually destroyed as seedlings. 



BUGSEED 



Corispermum hyssopifolium, L. 

 (Corispermum nitidum, Kit.) 



Native. Annual. Propagates by seeds. 



Time of bloom: July to September. 



Seed-time: September to November. 



Range: Shores of the Great Lakes to the Northwest Territory and 



British Columbia, southward to Missouri, Texas, and Arizona. 

 Habitat : Dry, sandy soil ; grain fields, hoed crops, and grasslands. 



This is another of the plants that often become tumbleweeds when 

 mature, which explains why its range extends from the Gulf of 

 Mexico to the Arctic Circle. It is well known also in Europe and 

 Asia. 



Stems pale green, succulent and finely hairy when young, but 

 becoming smooth, hard, and faintly ridged with age, often strongly 

 zigzagged, very freely branched, six inches to two feet in length, 



