44 



THE PEANUT— THE UNPREDICTABLE LEGUME 



Fig:ure IL — Tuberous root system of Arachis marginata. Tap-rooted as in A. hypo- 

 gaea, this root system differs from the cultivated species in the development of 

 fleshy thickening. 



*i*fcT7*i 



Figure 12.— Root system of Arachis hypogaea. This root system with its well-de- 

 veloped tap root may penetrate the soil to a depth of 3-4 feet. Note the abundance 

 of lateral roots with fibrous rootlets, but the absence of fleshy thickening. 



