Nepenthes flava is a tropical pitcher plant endemic to northern Sumatra, where it grows in montane forest at 1800–2200 m above sea level.
Nepenthes flava bears a conspicuous band of nectar glands on the underside of the lid, around the midline. This feature, among others, distinguishes it from N. inermis.
Pitcher Plants of the Old World is a two-volume monograph by Stewart McPherson on the pitcher plants of the genera Nepenthes and Cephalotus. It was published in May 2009 by Redfern Natural History Productions and covers all species known at the time. The work was edited by Alastair Robinson and Andreas Fleischmann.
Covers showing N. northiana (left) and C. follicularis (right)