Now, identifying a tree is as easy as taking a picture of a leaf. A new app for iPad and iPhone called LeafSnap will search a massive library of leaf images from the Smithsonian Institute and in seconds will return a likely match with just about anything you'd ever want to know about the tree in question.

The Smithsonian Institute library contains almost 5 million specimens and is growing daily as more and more users begin using the App and cataloging new species of trees. This is the general public's first chance to access data. The massive collection began back in 1848.

The downside to the App is, in some area's of the country it's illegal to pluck leaves from trees in public parks.