Citrus macroptera
Citrus macroptera, also known as hatkhora (, ), satkara, shatkora (, ), cabuyao, Melanesian papeda, or wild orange, is a semi-wild species of citrus native to Bangladesh, Malesia and Melanesia. Some authorities consider "C. macroptera" to be a taxonomic synonym of "C. hystrix" (kaffir lime), while others consider "C. macroptera" var. "annamensis" to be a synonym of "C. hystrix", but not "C. macroptera" var. "macroptera". Description. "Citrus macroptera" is so-named because of the large "wings" (-ptera) on the petiole, which is as large as the blade of the leaf. The tree, which has thorns, can reach in height. Its fruit  is about in diameter, has a fairly smooth, moderately thick rind, and is yellow when ripe. The pulp of the fruit is greenish-yellow and dry (does not produce much juice). The juice is very bitter, and somewhat sour. Varieties. The species is sometimes divided into four varieties, or alternatively into three separate species, as follows: Cultivation. A cultivar of "C. macroptera" var. "annamensis" known as 'Sat Kara', is grown primarily in the Sylhet Division of northeastern Bangladesh where it is called "hatkhora". Uses. Culinary uses. In Bangladesh, the thick fleshy rind of the "Citrus macroptera" is eaten as a  vegetable, while the pulp is usually discarded because of its bitter-sour taste. The thick rind is cut into small pieces and cooked (either green or ripe) in beef, mutton, and fish curries. The rind is often sun-dried for later cooking and consumption. The fruit is also a primary ingredient in satkora/shatkora pickles. It is also used in doner kebabs in British Bangladeshi fast-food restaurants. Perfumery. Many of the "C. macroptera" var. "annamensis" fruits are exported from Bangladesh, exacting a high price because their oil is used in the perfume industry.