Nepenthes rafflesiana

''Nepenthes rafflesiana'' , or Raffles' Pitcher-Plant, is a species of tropical pitcher plant. It has a very wide distribution covering Borneo, Sumatra, Peninsular Malaysia, and Singapore. ''Nepenthes rafflesiana'' is extremely variable, with numerous forms and varieties described. In Borneo alone, there are at least three distinct varieties. The giant form of this species produces enormous pitchers rivalling those of ''N. rajah'' in size.