Leaves with leaf stalk (unlike the similar N. gracilis which does not have a distinctive stalk). Pitchers abundant, lower ones swollen at the base, constricted at the centre and tubular above; wings fringed, upper ones tubular, wings rib-like; lid with a distinctive basal glandular rib below.

Borneo, Malaysia, Philippines, Sumatra (mostly highland)

Source: Anderson, P.; Spencer, R. (1997). Nepenthaceae. In: Spencer, R.. Horticultural Flora of South-eastern Australia. Volume 2. Flowering plants. Dicotyledons. Part 1. The identification of garden and cultivated plants. University of New South Wales Press.