As regards size of leaf, Witte distinguishes four main type;, viz.: 

 (1) broad and long; (2) broad and short; (3) narrow and long; (4) narrow 

 and short (82, p. 65). The size of leaf is naturally of great practical im- 

 portance in view of the extent to which it determines the value of a sort for 

 fodder purposes. 



Photo by L. H. N. 



FIG. XLVIII. Timothy cultures at Svalof showing (in the foreground) a dwarf race. 



Probably the greatest variability in grasses is to be found in the character 

 of the spike or panicle. This varies in size, form, stiffness and compactness. 

 As in the case of cereal grains, no correlation is found between length of spike 

 or panicle and length of straw. Thus in two races of Timothy which possess 

 practically the same length of straw one race may have a considerably longer 

 spike than the other. (See Fig. 49, f and g.) 



On the other hand there is found a certain relationship between the 

 length of stem and length of spike within the one individual. This is clearly 

 shown in the following table which deals with Timothy (82, p. 29) : 



