Hydroxy-alpha sanshool is a molecule found in plants from the genus "Zanthoxylum". Plants in the genus "Zanthoxylum" contain the lignan sesamin. The "coco" belongs to the genus "Zanthoxylum". Other large genera include "Zanthoxylum", "Melicope", and "Agathosma". "Ruta", "Zanthoxylum" and "Casimiroa" species are medicinals. The larvae feed on the buds of "Citrus" species, "Zanthoxylum americanum" and "Ptelea trifoliata". "Zanthoxylum elephantiasis" grow in the upper story. Zanthoxylum rhetsa is a tree in the family Rutaceae. It feeds on plants such as "Ailanthus altissima", "Juglans regia", "Zanthoxylum simulans", and "Quercus glauca". Aliphatic amides can be found in "Zanthoxylum" species found in Nigeria. The larva (caterpillar) has been recorded on "Zanthoxylum rhetsa". The larvae feed on the leaves of "Zanthoxylum elephantiasis", "Citrus reticulata", and "Citrus sinensis". Zanthoxylum albuquerquei is a species of tree in the family Rutaceae. Zanthoxylum negrilense is a species of plant in the family Rutaceae. Zanthoxylum harrisii is a species of plant in the family Rutaceae.