Wiki says: "The genus Zanthoxylum belongs in the rue or citrus family, and, despite its name, is not closely related to either black pepper or chili pepper."

Wiki says: "The genus Zanthoxylum belongs in the rue or citrus family, and, despite its name, is not closely related to either black pepper or chili pepper." https://en.wikipedia.org/wiki/Sichuan_pepper https://en.wikipedia.org/wiki/Sichuan_pepper