Nepenthes hamata. Members of the pitcher plant genus are carnivorous; insects drown in the liquid filling the cup of the flower, and special glands in the cup absorb nutrients. The insides of the pitcher are slick, so that prey cannot crawl out.

Post requested by sardonicmoronic.

The genus Nepenthes contains over 140 species of pitcher plants. This in particular is Nepenthes edwardsiana. Pitcher plants are carnivorous, insects drown in the fluid contained in the pitcher and special glands absorb nutrients. 

Requested by myomorpha and possiblyinteresting