CRUCIFERAE (MUSTARD FAMILY) 181 



shaped silicles, on fine, wire-like pedicels; each "Mother's heart" 

 is partitioned across its narrow thickness and each cell contains 

 about ten reddish brown seeds, a thrifty plant of average size 

 producing about two thousand. 



Means of control 



In cultivated ground the weed succumbs to the constant tillage 

 required, but such plants as spring up after the cultivator has 

 ceased its rounds should be cut or pulled and should not be allowed 

 to seed the ground. Autumn rosettes should be hoe-cut in spring. 

 In meadows and grain fields the weed may be killed while young 

 with a spray of Iron sulfate or Copper 

 sulfate. 



FALSE FLAX 



Camelina sativa, Crantz 



Other English names : Wild Flax, Gold 

 of Pleasure. 



Introduced. Annual and winter an- 

 nual. Propagates by seeds. 



Time of bloom: June to August. 



Seed-time: July to September. 



Range: Ontario to Manitoba, south- 

 ward to Ohio, Iowa, and South 

 Dakota. 



Habitat : Flax and grain fields, clover ; 

 waste places. 



In Europe this plant is cultivated 

 for the fine oil in its seeds and for 

 mucilage, both of which are similar 

 to the products obtained from flax 

 seed. It was formerly believed that 

 this plant was changed or degenerate 

 flax, like Chess in wheat, and early 

 writers spoke of it as Pseudo Linum, 

 or False Flax. (Fig. 125.) 



Stem eighteen inches to three feet 

 tall, erect, slender, smooth, branching FIG. 125. False Flax (Ca- 

 near the top. Lower leaves lance- melina sativa). x i. 



