The genus Nepenthes comprises about 75 species which have fascinated scient
ists worldwide for more than 100 years. Petioles and leaves of these plants
look like a pitcher and are capable, without any motion, to trap and eat v
arious animals. The present review gives a thorough description of the carn
ivorous character of these plants and describes their ecological habitat. I
t then enters the complex relations of myrmecophily and commensalism that s
ome of its members have developed with particular animals.