PLATE 17 



Early flowering stage of Chinese colza: 



A. — Usual form, showing luxuriant growth and long pedicels. Two and one -halt 

 months old. Grown in field at Yarrow Station, Md. Planted May 16, 1917. 



B. — Flower cluster. Plant about 5 months old. Grown in greenhouse. Planted 

 October 4, 1916. Natural size. 

 187932°— 20 5 



