BUD VARIATION IN THE WASHINGTON NAVEL ORANGE. 



25 



a large number of these typical Australian fruits. A further study 

 of this orchard revealed several trees bearing all or nearly all Austra- 

 lian fruits and having the peculiar upright habit of growth so charac- 

 teristic of the trees of that strain. 



■• - . 

 ;:' ' ■ . \ 



P630A-HP 



Fig. 7.— A Washington strain orange tree with a large limb sport of the Unproductive strain (shown at the 



right). 



An investigation of the occurrence of the single-fruit variations 

 found in the Washington trees, as illustrated in Plate XV, revealed 

 their occurrence in other trees as limb sports and in other cases as 

 individual trees. A limb sport of the Unproductive strain occurring 



