Terrestrial, sometimes epiphytic, climber to 3 m tall. Leaves coriaceous, sessile, blade oblong or narrowly elliptic-oblanceolate, apex rounded to acute, base cuneate, clasping the stem for 1/2-3/4 its circumference, auriculate, auricles 2-4 mm wide, shortly decurrent for 3-4 mm at an angle of 45°; Fruit valves 14.5-20 mm long. Seeds fusiform, ± 12 mm long, tuberculate at centre.
Asia-Tropical:, Malaya (Peninsular Malaysia ‒ present) Kelantan: present Malaka: present Pahang: present Perak: present Selangor: present Terengganu: present
Peninsular Malaysia (Perak, Selangor, Kelantan, Terengganu, Pahang, Malaka).
2. has already pointed out that some collections appear intermediate between N. macfarlanei and N. gracillima or N. sanguinea (see N. gracillima for notes). 1 Nepenthes macfarlanei is immediately recognisable by the presence of bristles on the underside of the lid, seen in no other species of Peninsular Malaysia. The upper pitchers are unusual in the way they are abruptly contracted at the mouth. Other features are that the peristome is flattened, and developed into a short column at the apex, the inner part of which is markedly toothed. The lower pitchers may be on tendrils up to 90 cm long.