Nepenthes gracilis Korth.

Leaves to about 13 cm long and 3 cm wide. Pitchers with a swollen base, pale green, spotted with purple, similar to those of n. alata but without the glandular rib on the lower surface of the lid.

Malaysia, Indonesia (lowland)

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.

kingdom Plantae
phylum   Tracheophyta
class    Magnoliopsida
superorder     Caryophyllanae
order      Caryophyllales
family       Nepenthaceae
genus        Nepenthes L.