× Citrofortunella microcarpa, the Calamondin or Calamanzi, is a fruit tree in the family Rutaceae native to the Philippine Islands and has been dubbed the calamondin, golden lime, panama orange, chinese orange, acid orange, calamonding, or calamandarin in English. It is believed to originate from China and has spread throughout Southeast Asia, India, Hawaii, the West Indies, Central and North America.