Upper pitchers of Nepenthes naquiyuddinii with prominent midrib on lower lid surface. Source: Adam, J.H. & Hafiza A. Hamid 2006. {PDFlink|1=Pitcher Plants (Nepenthes) Recorded from Keningau-Kimanis Road in Sabah, Malaysia.|2=2.40 MiB} International Journal of Botany 2(4): 431-436. ISSN 1811-9700 {doi|10.3923/ijb.2006.431.436} Copyright: © 2006 As...