构棘(Cudrania cochinchin-ensis)是一种在我国东部至西南各省区常绿阔叶林或沟谷丛莽中较常见的常绿直立或攀援状灌木,属于桑科柘属。它的根系十分发达,根既长又粗,圆柱形,外皮金黄色或橙红色,极薄,挖出后易爆裂脱落,因此被俗称为“黄龙退壳”、“金蝉脱壳”、“金腰带”、“ Cudrania cochinchin-ensis is an evergreen or climbing shrub common in the evergreen broad-leaved forest or valleys in eastern China to the southwestern provinces and belongs to the genus Sang. Its root system is very developed, the root is both long and thick, cylindrical, golden yellow or orange-red skin, very thin, easy to burst after digging off, it is commonly known as the “yellow dragon back shell”, “ , ”