Nepenthes reinwardtiana is a tropical pitcher plant native to Borneo and Sumatra and to a number of smaller surrounding islands including Bangka, Natuna, Nias, and Siberut. Although some sources have included Peninsular Malaysia and Singapore within the range of this species, these records appear to be erroneous.
Upper pitchers of a plant identified as N. naquiyuddinii
Nepenthes ampullaria is a very distinctive and widespread species of tropical pitcher plant, present in Borneo, the Maluku Islands, New Guinea, Peninsular Malaysia, Singapore, Sumatra, and Thailand.
N. ampullaria with climbing stems and rosette pitchers.
Nepenthes ampullaria at the Bogor Botanical Gardens
N. ampullaria is well-adapted to capturing leaf litter.