Zanthoxylum ailanthoides, also called ailanthus-like prickly ash, is an Asiatic plant of the prickly-ash genus Zanthoxylum, natively occurring in forest-covered parts of southeastern China, Taiwan, Southeast Asia, and Japan from Honshu southward. The piquant fruit serves as a local substitute for the ordinary red-pepper in China before the Columbian exchange. In Taiwan, the young leaves are used in cuisines.