Leafsnap: http://itunes.apple.com/us/app/leafsnap/id430649829?mt=8
Leafsnap for iPad: http://itunes.apple.com/us/app/leafsnap-for-ipad/id433522683?mt=8
Note: Android version to be released in the future.
Leafsnap is a free electronic field guide for trees. It's available as an app for iPhone that helps you figure out what tree you're looking at. Just snap a photo of a leaf and Leafsnap will analyze the leaf to help you identify it correctly.
Leafsnap was developed by researchers from Columbia University, the University of Maryland and the Smithsonian. In addition to leaf-shape recognition, it also has thousands of photos of several species of trees' flowers, fruit, bark and more. Test your knowledge by playing games included within the app or browse/share your collection at any time.
Understand your backyard, understand your world... with Leafsnap.
Produced by Brian Ireley with Sarah Taylor
Starring Vivian Nweze
Additional forest footage: Michael Cooper
Music: Scott Altham
For more info: http://leafsnap.com