LUTHER BURBANK 



gained greatly in vigor of growth, in hardiness, 

 and in resistance to disease. 



The colors of the new flowers are conspicuously 

 brightened. The striping is usually crimson on 

 white, crimson on yellow, or yellow on crimson. 

 In addition to presenting these stripes, which are 

 quite unlike any marking of the native Tigridias, 

 the hybrid flowers generally retain the dotting at 

 the center that characterizes the tribe in its origi- 

 nal form. But these dottings are greatly increased 

 in size. In some instances, on the other hand, the 

 dottings are partially or entirely eliminated. 



The original types of these very striking new 

 forms of Tiger Flower were readily fixed so that 

 they breed absolutely true from the seed. 



It was possible, however, to increase the size 

 of the flower by selection, and this increase in size 

 was a permanent acquisition; also to add brilliance 

 with new combinations of colors. 



And of course the hybrid plants thus perfected 

 exceed greatly the size of any plants that could 

 have been developed by mere selection without 

 crossing. 



UTILITY AS WELL AS BEAUTY 



The new tiger plants, although still lacking 

 something of hardiness, were greatly improved in 

 this regard over their ancestors. 



Most of the old tigridias, as I have said, are 



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