PLATE is 

 Late rosette stage of Chinese colza seedling: 



A. — Pe-tsai. Grown in field at Arlington, Va., by D. N. Shoemaker. The rule is 

 17X inches in length. 



B. — Cross between Pak-choi and Pe-tsai. Grown in field at Arlington, Va., by D. 

 N. Shoemaker. The rule is 15 inches in length. 



C. — Pak-choi. Grown in field at Arlington, Va., by D. N. Shoemaker. The 

 marked portion of the rule is 12 inches in length. 



