LUTHER BURBANK 



The only variety I have introduced which is 

 a seedling of this plum is a cross with the Asiatic 

 Prunus triflora. This hybrid is called Doris. 

 There is blood of the French Cherry plum, how- 

 ever, in some hybrid plums including my well- 

 known Shiro and a few others. 



The European plums have also contributed 

 largely to the production of new races of fruit 

 trees that are highly ornamental. A whole race 

 of plum trees beautiful enough for lawn decora- 

 tion has sprung into being in my open air lab- 

 oratory. 



The French plum with purple leaves, Prunus 

 pissardi, formed the basis for the development of 

 these ornamental fruit trees. The methods used 

 in developing these hybrids are the same as with 

 the others, and results are similar, although the 

 fruits have not proven so generally valuable as 

 certain varieties raised solely for fruit. 



The main use of the purple-leaved plum is for 

 decorative purposes, but the fruits of the two va- 

 rieties introduced are good enough for home use 

 and in some cases are sold in near-by markets. 

 This refers more especially to the very early pur- 

 ple-leaved plum, the Othello. 



The story of the stoneless plums, which also 

 owe their origin to European stock, has been told 

 elsewhere and need not be repeated here. 



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