From the Smithsonian Collection of Flora of Puerto Rico.
Jatropha curcas L. det. by P. Acevedo-Rdgz.
Those large seed pods of the J. curcas are the future of bio-fuels.
The Jatropha is in the Euphorbia family, has succulent stems, and gets nicely shrubby with beautiful leaves. Most Jatrophas are known for their leaves, some for their caudexes. And all are, as members of Euphorbiaceae, poisonous.