188 MANUAL OF TROPICAL AND SUBTROPICAL FRUITS 



So far as is known the tree has never fruited in California, 

 the climate of that state being probably too cold for it. It has 

 been planted in protected situations there but no specimens have 

 reached large size. In southern Florida it grows and fruits 

 well. P. W. Reasoner, 1 who apparently confused this species 

 with the cherimoya, says that it is confined to the same terri- 

 tory in Florida as the sugar-apple. Its requirements seem to be 

 about the same as those of A. squamosa. It does not appear to 

 be so partial, however, to a dry climate. The mature tree will 

 withstand several degrees of frost without serious harm ; a 

 temperature of 27 or 28 usually does not injure it severely. 

 In Ceylon, according to H. F. Macmillan, it does not grow at 

 elevations above 3000 feet. In tropical America it ascends 

 to the same altitude, or occasionally to 3500 feet. 



The bullock' s-heart prefers a deep rich soil with plenty of 

 moisture. It is propagated by budding in the same manner as 

 the cherimoya. P. J. Wester has found that it can be budded 

 on the soursop, the pond-apple, and the sugar-apple, as well as 

 on seedlings of its own species. As a rule, the trees bear more 

 freely than those of the soursop and cherimoya, but not more 

 so than the sugar-apple. There are as yet no named varieties 

 in cultivation. 



THE ILAMA (Fig. 27) 

 (Annona diver sifolia, Safford) ' 



The ilama is probably the finest annonaceous fruit which 

 can be grown in the tropical lowlands ; yet it has not, until very 

 recently, been planted outside the region in which it is in- 

 digenous. Now that it has been called to the attention of 

 horticulturists, its range should be extended rapidly to all parts 

 of the tropics. 



1 Bull. 1, Div. Pomology. 



