FAMOUS DODDER. “Plants intelligently optimise energy gain whilst minimising resource outlay. The clearest example of predictive modeling behavior can be found in a parasitical non-photosynthetic plant, Dodder. However numerous decisions are made on first contact. Many suitable hosts are rejected within a few hours of the first touch contact, indicating choice. Dodder does not parasitize itself indicating self-recognition.” Is it following chemical cues?
http://link.springer.com/article/10.1007/s00114-005-0014-9