LUTHER BURBANK 



tion. Of curse, many varieties, differing in such 

 minor details as the production of rimners, resist- 

 ance to fungus attacks, and precise qualities of the 

 fruit have been developed. Different races also 

 show a diversity as to manner of flowering, certain 

 varieties bearing pistillate flowers, just as the Cal- 

 ifornia dewberry does, whereas others bear perfect 

 or bi-sexual flowers, as is customary with the 

 members of the rose family in general. 



But these are minor differences; and, as we 

 have seen, the strawberry type in all its essentials 

 has been marvelously maintained from first to 

 last. Now as always this fruit is unique and 

 curiously isolated. 



Hybridizing Experiments 



My own experiments with the strawberry have 

 been carried out on a rather expansive scale, al- 

 though I have given by no means as much attention 

 to this fruit as to a good many others. 



I have crossed all the familiar cultivated varie- 

 ties, and in addition have made hybridizing ex- 

 periments in which numerous wild species, some 

 of them imported from distant regions, have had 

 a share. I have, for example, commingled the 

 strains of the best varieties of the cultivated straw- 

 berry with those of strawberries from Norway 

 and from Alaska, and the native Chilian species, 

 as well as with various wild species of our own. 



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