A halved pomelo with orange-yellow pulp in front of a dirty-yellow pomelo in sunlight
Citrus maxima (Pomelo) or Citrus grandis

One of the original citrus species. It is the largest citrus fruit and taste much like a grapefruit, which is a hybrid of the pomelo. It is not a popular fruit in Colombia. Photographed in northern Colombia.

Citrus maxima white flower with a green stigma and brown anthers
A large yellow-green Pomelo hanging from a tree