Carnivorous plants are really interesting and much more wide spread than most people realize. The exact number of species varies, but most put the number at around 500.

You can read more about them here: https://www.wikiwand.com/en/Carnivorous_plant or in Adamec (1997) “Mineral nutrition of carnivorous plants: a review”, available here: https://link.springer.com/content/pdf/10.1007/BF02857953.pdf