Citrofortunella

Citrofortunella are a large group of commercial hybrids that cross the kumquat with other citrus.

The result of genetic crosses between kumquats and these other citrus would then be intergeneric hybrids, so a novel genus name was coined for them in 1975,[1] by compounding the names of the contributing genera to form Citrofortunella.

Recent phylogenetic work has shown kumquats to fall within Citrus rather than belonging to a distinct genus, meaning these would no longer be considered intergeneric hybrids, and use of Citrofortunella as a distinct genus name for these hybrids loses taxonomic validity.

They produce small acidic fruit and are also more compact than other citrus, making them good ornamental plants.

These have been given similar common names, portmanteaus that combine the '-quat' ending of kumquat with an indication of the other parent citrus.