Harrisia portoricensis is a species of cactus in the genus
Harrisia. Its common names include
higo chumbo and
Puerto Rico applecactus. It is endemic to Puerto Rico, where it is known from three smaller islands off the coast of the main island. The population is estimated at 59,000 on Mona Island, 148 individuals on Monito Island, and only 9 on Desecheo Island.
(Wikipedia)