LOCATION@1 pepper -LRB- or Szechuan pepper -RRB- is the outer pod of the tiny fruit of a number of species in the genus Zanthoxylum -LRB- most commonly Z. piperitum , Z. simulans , and Z. schinifolium -RRB- , widely grown and consumed in LOCATION@2 as a spice .

Most commonly these plants are Z. piperitum , Z. simulans , Z. sancho or Z. schinifolium .
