Nepenthes dulcis is a rather large and rather active carnivorous plant found in the plant conservatory adjacent to Castle Heterodyne's seraglio, where it is rooted in and around the remains of the hanging terrarium it outgrew at some point (presumably during Castle Heterodyne's past two decades of general disrepair). It incapacitates its prey by inducing feelings of great giddiness. Smoke Knights use this somehow, but it isn't clear if the live plant somehow has mental control and they must carry a whole plant with them, or if the effect is gaseous or can otherwise be extracted.
This plant may have a passing resemblance to Spitting Hetunias.
Possibly Relevant Outside InformationEdit
Nepenthes is an actual genus of pitcher plant. Actual species within this genus generally catch insects (not people) in pitcher-like traps. These traps do not move in reaction to prey, rather, they rely on insects, who may be attracted by scents or colors of the plant, falling in. The insects, having lost their footing on the pitcher's slippery lip or slippery inner walls, drown in fluid at the bottom.
The fictional Nepenthes dulcis shares some characteristics with some other actual plants, as well. In contrast to the relative passivity of the species of the Nepenthes genus, the the two halves of a leaf of a venus flytrap snap shut when an insect lands on it or attempts to crawl across the open leaves, preventing the escape of the insect with long, stiff protrusions along the leaf's edge that mesh together like alternating teeth. Unfortunately, the plant does not make a "nom" noise.
The dulcis also bears a resemblance to Rafflesia arnoldii. The arnoldii does not prey on animals (it sustains itself by parasitizing a type of vine), but it does have the largest individual flower of any extant plant (up to 1 meter or 3 feet in diameter), and said flower is colored red with white spots. Unlike the dulcis, the airborne emissions of an arnoldii aren't of a sort that would make most non-botanists ecstatic: It smells like rotting flesh (in order to attract flies which spread its pollen), a property that has earned it the nickname of "corpse flower". (Not to be confused with another plant also commonly referred to by that name, the Amorphophallus titanum, which has the largest unbranched flower cluster.) A fly falling under its spell, however, might well start making jokes about seraglios, had the fly the cognitive capacity and appropriate mouth-parts to do so.