Nepenthes Rafflesiana Upper Pitcher Green Color Hanging On Trees Stock Photo

The upper pitcher of Nepenthes, a carnivorous plant, is a modified leaf that forms a curved, pitcher-like structure. It contains a liquid that attracts insects and small prey. The inner surface has slippery walls and downward-pointing hairs to prevent trapped creatures from escaping, aiding in their digestion and providing nutrients to the plant.