Rutaceae. An acid citrus fruit originating in China, which was introduced to the U.S. as an “acid orange” about 1900. This plant is grown more for its looks than for its fruit edibility. It is hardier to cold than any other true citrus species. The edible fruit is small and orange, about one inch in diameter, and resembles a small tangerine.
2 -4 m. China. C.