326 LUTHER BURBANK 



by mention of the curious flower, Cynoglossum 

 grande f of the borage family, the flowers of 

 which are blue in color until they are fertilized, 

 then each blossom becomes deep red. Somewhat 

 similar are the color changes of one of my new 

 varieties of poppy, which vary in color from day 

 to day. And this phenomenon of changing color 

 while still retaining freshness may be linked with 

 the observation that nearly all flowers change in 

 color after they pass maturity, losing their 

 brilliancy as they wither, and ultimately taking 

 on altogether modified hues. 



With these illustrative cases of the varied 

 coloration of flowers in mind and of course the 

 list might be extended indefinitely it no longer 

 seems strange that the orange and white African 

 daisies have the potentialities of a pink daisy in 

 their hereditary strains. There is every rea- 

 son to suppose that the two African daisies 

 are descended from the same original form. 

 It is probable that the existing differences 

 in their colors are due to somewhat recent 

 modifications. 



Possibly the orange African daisy grew in 

 the open, where it was subjected to the influ- 

 ence of sunlight; and the white daisy in a 

 woodland or marsh where it was much in the 

 shadow. 



