290 



BOTANY OF CROP PLANTS 



"suckers" or "tillers" are produced. The amount of 

 branching depends upon the thickness of seeding; the plants 

 branch freely when not crowded and feebly when crowded. 

 The young stems vary from green to red, and turn brown 

 with age. 



':^^^"^ 



Pig. 114. — Buckwheat (Fagopyrum vulgare). 



Leaves.^ — The leaves are alternately arranged on the stem 

 and characteristically hastate (halberd-shaped) (Fig. no), or 

 triangular heart-shaped; they may be sessile or short- 

 petioled, and bear an ocrea (Fig. no), which soon falls off. 



