258 LUTHER BURBANK 



colored stamens from the flowers of one and 

 dusting the yellow pollen on the prominent pis- 

 tils of the other. 



Particular attention was given to hybridizing 

 the Maypop with the Australian species, Passi- 

 flora edulis, already referred to. I thought it 

 would be possible to combine the good fruiting 

 qualities of the Australian species with the hardi- 

 ness of the American species. The fruit of the 

 former has a thick, hard, shell covering the 

 pulp, and a fragrant and highly flavored in- 

 terior. That of the latter has a thin, husklike 

 covering, with a minimum amount of edible 

 matter. 



Cross-fertilization was readily effected, and 

 the experiment gives every promise of a success- 

 ful issue. 



Several hundred hybrids that have not yet 

 borne fruit are now under observation. Not all 

 of these are hybrids of the Maypop and the Aus- 

 tralian Passion Flower, but the seedlings of this 

 cross at present appear to be most promising. 

 The work has not been under way long enough 

 to give anything like final results. But what has 

 been done indicates that it is at least worth while 

 to continue the experiments. 



Indeed, there seems to be little doubt of a thor- 

 oughly successful and satisfactory issue. 



