Nepenthes (is a genus of carnivorous plants, also known as tropical pitcher plants, or monkey cups, in the monotypic family Nepenthaceae. All the species are carnivorous plants that capture insects and other prey by means of modified pitcher-shaped leaves that function as passive pitfall traps. Attracted by nectar secreted from the underside of the trap’s lid, the prey often slip from the mouth of the pitcher into a pool of liquid at the bottom and are unable to escape, because of the pitcher’s downward-pointing hairs and slick sides. The animals drown and are eventually digested by enzymes. picture indicated pitcher with frog