昆栏树（学名：Trochodendron aralioides），别名：云叶、乌松仔、水柯仔、水柯、鸟樆、鸟黐、山车、山猪肉

Trochodendron aralioides, sometimes colloquially called "wheel tree", is a flowering plant and the sole living species in the genus Trochodendron, which also includes several extinct species. It was also often considered the sole species in the family Trochodendraceae, though botanists now include the distinct genus Tetracentron in the same family. T. aralioides is native to Japan, southern Korea and ******.