10. Cobra lily (Darlingtonia californica)
Arguably the cutest of the spooky entries in this list, the cobra lily or Californian pitcher plant is a carnivorous plant that grows in bogs. Its name comes from its tubular top which resembles a cobra's hood, while its forked leaf looks like a tongue. The plant traps insects by luring them in, and once the prey is inside, light shining through the translucent hood prevents it from finding the exit. The downward-pointing hairs ensure the insect's trip is one way.