Nepenthes dubia Nepenthes dubia Danser in Bull. Jard. Bot. Buitenzorg III: f. 4. 1928Isotype: Sumatra, Mt Talamaku (Ophir), 1900 m, ., 29 May 1917, Bünnemeijer 938 (BO)Lectotype: Sumatra, Mt Talamaku (Ophir), 1900 m, ., 29 May 1917, Bünnemeijer 938 (BO)=Nepenthes bongso auct. non Korth.: Tamin & M. Hotta, Diversity and Dynamics of Plant Life in Sumatra: 83. 1986=?nepenthes tenuis Nerz & Wistuba, Carnivorous Plant Newsl.: f. 2. 1995Holotype: 24 Aug. 1957., Meijer 6949 (L)