It is a shrub or small tree growing to 3–6 m, and bears small citrus fruit used to flavor foods and drinks. Although sometimes described as a native of the Philippines or other areas of Southeast Asia, the tree is in fact the result of a hybrid between species in the genus Citrus and unknown in the wild. Hybrids between Citrus species have been cultivated for so long that the origins of most are obscure. It is generally held that most species in cultivation are ancient apomictic hybrids and selected cultivars of these hybrids, including crosses with segregate genera such as Fortunella and Poncirus. The calamondin is usually described as a cross between Citrus reticulata (Tangerine or Mandarin orange) and Citrus japonica Oval Kumquat group.
See Recipe for Calamansi Tea
*Info from Wikipedia
