a.^Nepenthes thorelii is a poorly known Indochinese species with a confused horticultural history. The name has been widely applied to cultivated plants, but it is not certain whether the species exists in cultivation at all. Numerous artificial hybrids long thought to involve N. thorelii likely represent crosses with other Indochinese species of the "N. thorelii aggregate"—particularly N. bokorensis, N. kampotiana, and N. smilesii, as these were the most accessible to plant collectors—or hybrids thereof.[3]
References
^ abcdBednar, B.L. & O.C. Bramblett 1994. Nepenthes hybrid crosses made by: Bruce Lee Bednar & Orgel Clyde Bramblett. Carnivorous Plant Newsletter23(1): 4.
^Mey, F.S. 2010. "The Elusive Nepenthes thorelii"(PDF). In: S.R. McPherson Carnivorous Plants and their Habitats. Volume 2. Redfern Natural History Productions, Poole. pp. 1340–1367.