Analogous to the blagotubes and interwebs, the intervines are the information superhighway for plants. Theorized to exist as the communication vector in many evil-tentacle-plant movies. (such as The Ruins) Not to be confused with 'intervenes', damn it!
The plant kingdom routinely communicates via the intervines.
"Mathias, you haven't been answering my calls... gimme a ring when you've got a minute. See ya soon." - The intervines