This is an intermediate Nepenthes from Sumatra, most note worthy for its unusually shaped pitchers. Willem Meijer first found them in 1956, on a mountain about 6000′ above sea level where they grown in sphagnum moss along ridges in the forest, occasionally found in pockets of moss on trees.
It’s a climber, stems may branch.
Upper and lower pitchers are similar, reaching ~ 2.5″ in length when full size. Lower pitchers grow in the moss leaving only the opening visible.
It is unusual among Nepenthes in that it uses light through the back top like many US pitcher plants. Inner walls of the pitcher are sticky, acting like fly paper to trap insects.
This is a critically endangered plant due to poaching. You can find clones at reputable plant sellers. Getting endangered plants into the hands of as many gardeners as possible may be our best hope for saving them.
I’ve found it prefers bright fluorescent light to sunlight and high humidity.
It prefers cooler temperatures (50’F-75F’).
I grow it in an orchid basket filled with sphagnum in a dish with about an inch of distilled water I refill when dry.