The citrangequat is a trigeneric citrus hybrid of a citrange and a kumquat, developed by Dr. Walter Swingle at Eustis, Florida, in 1909. Citrangequats are bitter in taste, but are considered edible by some at the peak of their maturity. Three named cultivars exist:
- Sinton – 'Nagami' kumquat (Fortunella margarita) X 'Rusk' citrange; named for the city of Sinton, Texas
- Telfair – 'Nagami' kumquat and 'Willits' citrange; named for Telfair County, Georgia
- Thomasville – most common citrangequat; named for the city of Thomasville, Georgia 'Thomasville' is considered the most cold-hardy edible citrus variety. It can tolerate temperatures up to −15 °C (5 °F).