Nepenthes are amazing tropical plants which typically form into a climbing vine. In the right conditions and age, the mid-vein of each leaf can extend and inflate, producing a "pitcher" while fills with fluid and is used to catch insects and other small creatures that it "digests" to supplement its nitrogen needs.  

This Nepenthes hybrid of (sibuyanensis X aristolochioides) combines some terrific traits from both parents into a fairly strong and reliable grower with showy, highly-colored and patterned pitchers. 

Cutting-grown plants, currently in 3" pots. (Sent potted)