Etrog:As a variety of citron, etrogs have a large size and are 4 to 6 inches long. At first glance, they can resemble a lemon or a lime, but they have much rougher skin that is thick and dry.
Pompia:One of the rarest citrus fruits in the world is the pompia, which is generally between 4 and 6 inches wide. Pompia is a citrus hybrid – a cross between citron and sour oranges.
Grapefruit: Grapefruit originated in Barbados and are actually a hybrid – a cross between sweet oranges and pomelos. They have a diameter of 4 to 6 inches and are a rich yellow-orange color.
Pomelo:The largest citrus fruit in the world is the pomelo which has a diameter of 4 to 12 inches and can weigh between 2 and 4 pounds. Pomelos are native to Southeast Asia.
Orangelo: They originated in Puerto Rico and – although a hybrid – appeared completely spontaneously in Puerto Rican coffee plantations.
Iyokan Orange: Although a hybrid of unknown origin, iyokan oranges were originally discovered growing wild in a garden in Japan in the late 19th century.
Blood Orange:One of the most popular varieties of orange is blood orange. Blood oranges are around 4.5 inches wide and originated in the Mediterranean.
Oroblanco:Also referred to as the oroblanco grapefruit, oroblancos are a seedless citrus hybrid similar to grapefruit. Oroblancos have an average diameter of 4 to 4.7 inches and are round or oval.
Corsican Citron:One of the largest varieties of the citron fruit is the Corsican citron which can be up to 9.8 inches long.
Cedro Citron:Another large citrus species is the cedro citron which reaches a diameter of 7.5 to 11.5 inches.