citrus family citrofortunella hybrids plant Citrofortunella according to the Swingle system, is a hybrid genus, containing intergeneric hybrids between members of the genus Citrus and the closely related Fortunella. It is named after its two parent genera. Such hybrids often combine the cold hardiness of the Fortunella, such as the Kumquat, with some edibility properties of the citrus species. Citrofortunellas, which are all hybrids, are marked with the multiplication sign before the word "Citrofortunella", for example × *Citrofortunella microcarpa* or × *Citrofortunella mitis which refer to the same plant.[https://en.wikipedia.org/wiki/Citrus_taxonomy] requires discussion