Naming''Nepenthes gracilis'' was formally described by Pieter Willem Korthals in his 1839 monograph, "Over het geslacht ''Nepenthes''".
''Nepenthes abgracilis'' from the Philippines is named for its superficial similarity to this species.
DistributionOne of the most widespread ''Nepenthes'' species, ''N. gracilis'' is native to Borneo, Peninsular Malaysia, Singapore, Sumatra, central Sulawesi, and southernmost Thailand.
It has also been recorded from many smaller islands, including Bangka, Batu Islands, Belitung, Bengkalis, Ko Lanta, Ko Tarutao, Labuan, Langkawi, Mendol, Mentawai Islands , Meranti Islands , Musala, Nias, Penang, Phuket, Riau Islands, and Rupat.
HabitatThe species has a wide altitudinal distribution of 0 to 1100 m above sea level, although most populations are found below 100 m and plants are rare above 1000 m. Despite being a widespread plant, natural hybrids between ''N. gracilis'' and other species are quite rare.
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