Due to its unique pitcher morphology, it is considered to be one of the most spectacular Nepenthes species native to the island.

The isotype Clarke, Davis & Tamin 1307, collected at the same time as the holotype, consists of a single sheet with a fragment of a sterile climbing stem bearing two upper pitchers.

Small, circular nectar glands (≤0.5 mm wide) are concentrated on the underside of the lid near its apex.

[1][3] The typical habitat of N. jacquelineae is dense mossy forest, which is almost constantly shrouded in fog and experiences daily rainfall.

Plants are exposed to relatively low light levels, as sunlight is diffused by fog and vegetation.

In 2001, Charles Clarke unofficially evaluated its conservation status as Data Deficient based to the IUCN criteria.

[4] Indeed, this trapping method is employed by the closely related N. inermis, which also produces highly viscous pitcher fluid.

[1] The pitchers of N. jacquelineae frequently catch large flying insects such as blattid cockroaches, bees, and moths.

The unusually large glands on the underside of the lid produce copious amounts of nectar and likely lure insects into a precarious position over the pitcher mouth.

[1] The lower pitchers of this species are often embedded in thick Sphagnum moss, allowing them to trap small terrestrial animals such as snails.

[1] It shares with these species features such as infundibulate pitchers which are wholly glandular on their inner surfaces, bracteate inflorescences, and sessile leaves.

The shape of the pitcher cup is closest to N. talangensis (minus the peristome), whereas the lid resembles that of N. tenuis, although it is broader throughout and contracted towards the base.

[1] The large glands on the underside of the lid are unique among Sumatran Nepenthes species, and help to distinguish N. jacquelineae from related taxa.

N. jamban also possesses very large nectar glands (≤0.5 mm), but differs in having longer and one-flowered partial peduncles, and a narrower lid.

[2] Nepenthes flava can be easily distinguished from N. jacquelineae on the basis of its ovate or oblong lid and cylindrical peristome.

[5] The most characteristic feature of N. jacquelineae is its greatly expanded peristome, which can be up to 3.5 cm wide in upper pitchers.

This is in stark contrast to the closely related N. inermis, which produces upper pitchers that lack a peristome completely.

[8][9] Nepenthi inermi similis, sed habitu robustiore, peristomio lato expanso, operculo latiore glandes pergrandes nectariferas ferenti differt.