Original: The kaffir lime (Citrus hystrix DC., Rutaceae), also known as kieffer lime and limau purut is a type of lime native to Laos, Indonesia, Malaysia and Thailand, commonly used in Southeast Asian cuisine, and widely grown worldwide as a backyard shrub.
Simplified: The Kaffir lime (Citrus hystrix DC., Rutaceae), also known as kieffer lime, makrut, or magrood, is a citrus fruit native to Indonesia. It is widely grown worldwide as a backyard shrub.