Bui. 1450, U. S. Dept of Agriculture 
Plate I 
Timothy Plants Grown from Seed 
A.— Timothy plants grown from seed sown at varying depths. The surface of 
the soil is indicated by the straight line. The plant at the left was grown 
from seed sown at the surface; the second plant at a depth of 0.5 inch; the 
third, 1 inch; the fourth, 1.5 inches. The length of the mesocotyl increased 
as the depth of sowing increased. The seed from which each plant grew 
is attached to it at the base of the mesocotyl, which extends up to the base 
of the shoot where the nodal roots have developed 
B.— A timothy plant grown from seed sown in the autumn of 1922. It was located 
in an isolated position where it had ample space for growth. This is an 
illustration of the manner in which a timothy plant increases in size 
through the development of new shoots in the axils of the leaves at the 
bases of the older shoots. (Photographed June 1, 1923) 
