Nepenthes

Nepenthes mirabilis at the Periyar Tiger Reserve, in Southern Western Ghats of India
Nepenthes species usually consist of a shallow root system and a prostrate or climbing stem, often several metres long and up to 15 m (49 ft) or more, and usually 1 cm (0.4 in) or less in diameter, although this may be thicker in a few species (e.g. N. bicalcarata). From the stems arise alternate, sword-shaped leaves with entire leaf margins. An extension of the midrib (the tendril), which in some species aids in climbing, protrudes from the tip of the leaf; at the end of the tendril the pitcher forms. The pitcher starts as a small bud and gradually expands to form a globe- or tube-shaped trap. The shapes can evoke a champagne flute or a condom.
  Basic structure of an upper pitcher
The trap contains a fluid of the plant's own production, which may be watery or more viscous, and is used to drown the prey. This fluid contains viscoelastic biopolymers that may be crucial to the retention of insects within the traps of many species.  The viscoelastic fluid in pitchers is especially effective in the retention of winged insects.  The trapping efficiency of this fluid remains high, even when significantly diluted by water, as inevitably happens in wet conditions.The lower part of the trap contains glands which absorb nutrients from captured prey. Along the upper inside part of the trap is a slick, waxy coating which makes the escape of its prey nearly impossible. Surrounding the entrance to the trap is a structure called the peristome (the "lip"), which is slippery and often quite colorful, attracting prey, but offering an unsure footing.  The prey-capture effectiveness of the peristome is further enhanced in moist environments, where condensation may cause a thin water film to form on the surface of the peristome.  When wet, the slippery surface of the peristome causes insects to ‘aquaplane’, or slip and fall, into the pitcher.  Above the peristome is a lid (the operculum); in many species, this keeps rain from diluting the fluid within the pitcher, the underside of which may contain nectar glands which attract prey.Nepenthes species usually produce two types of pitchers, known as leaf dimorphism. Appearing near the base of the plant are the large, lower traps, which typically sit on the ground. The upper or aerial pitchers are usually larger, coloured differently, and possess different features from the lower pitchers. These upper pitchers usually form as the plant reaches maturity and the plant grows taller. To keep the plant steady, the upper pitchers often form a loop in the tendril, allowing it to wrap around nearby support. In some species (e.g. N. rafflesiana), different prey may be attracted by the two types of pitchers. This varied morphology also often makes identification of species difficult.Prey usually consists of insects,  but the largest species (e.g. N. rajah and N. rafflesiana) may occasionally catch small vertebrates, such as rats and lizards. Records of cultivated plants trapping small birds have been made. Flowers occur in racemes or more rarely in panicles with male and female flowers on separate plants. They are insect-pollinated, the primary agents being flies (including blow flies, midges, and mosquitoes), moths, wasps, and butterflies. Their smells can range from sweet to musty or fungus-like. Seed is typically produced in a four-sided capsule which may contain 50–500 wind-distributed seeds, consisting of a central embryo and two wings, one on either side (though  N. pervillei differs).
The genus is cytologically diploid, with all studied species having a chromosome number of 2n=80. This high number is thought to reflect paleopolyploidy (likely 8x or 16x).

3-6 hours of sun per day, with protection from intense mid-day sun

Water moderately, allowing the top 3cm to dry out between watering.

Nepenthes

Nepenthes

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