Nepenthes × kuchingensis is a natural hybrid between N. ampullaria and N. mirabilis. Although it is named after the city of Kuching in Sarawak, this plant has a wide distribution across Borneo, New Guinea, Peninsular Malaysia, Sumatra, and Thailand.
References
Akhriadi, P. 2007. Kajian taksonomi hibrid alami Nepenthes (Nepenthaceae) di Kerinci. Working paper, Andalas University, Padang. Abstract Clarke, C.M. & C.C. Lee 2004. Pitcher Plants of Sarawak. Natural History Publications (Borneo), Kota Kinabalu. Enjelina, W. 2012. Analisis hibrid alam kantung semar (Nepenthes) di Bukit Taratak Kabupaten Pesisir Selatan Sumatera Barat dengan teknik RAPD. M.Sc. thesis, Andalas University, Padang. Mansur, M. 2007. Keanekaragaman jenis Nepenthes (kantong semar) dataran rendah di Kalimantan Tengah. [Diversity of lowland Nepenthes (kantong semar) in Central Kalimantan.] Berita Biologi 8(5): 335–341. Abstract Srirahayu 2010. Kajian fertilitas hibrid alami pada populasi Nepenthes di Bukit Taratak, Kenagarian Surantih, Kecamatan Sutera, Kabupaten Pesisir Selatan. Thesis, Andalas University, Padang. Abstract