Of the genuses Eccremocarpus and Gomphocarpus, which plants are native to South America?
Eccremocarpus: Eccremocarpus (syn. Eccremocarpus:  "Calampelis" D.Don) is a genus of five species of flowering plants in the family Bignoniaceae, native to western South America in Chile, western Argentina, and Peru. Gomphocarpus:  It is widespread across much of Africa, with a few species naturalized in other regions.
Eccremocarpus