The Pitaya Fruit in Cross-Section, Natural size. 
The fruit of this cactus, probably Cereus triangularis , 
is commonly sold on the Havana market in July and August. 
The color is a beautiful deep pink, while the soft trans- 
lucent sweet pulp is whitish. Photograph by Wilson Popenoe , 
July 30, 1914, No. 16110. Havana, Cuba. 
