Yichang orange (Citrus ichangensis Swingle) belongs to Rutaceae, Citrus, small trees or shrubs, and the thorns on the flower branches are usually degraded. Leaves ovate-lanceolate, flowers usually solitary in leaf axils; Bud width oval; The style is shorter than the petals, the fruit is oblate, spherical or pear-shaped, the seeds are slightly round or irregularly tetrahedral, the flowering period is May-June, and the fruit period is10-165438+10. Born on high mountains and steep cliffs, beside rocks, along ridges or slopes of river valleys. There are also cultivated ones.