leafsnap.com  -- identify a tree by taking a picture of its leaves

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  • What’s that tree? Try Smithsonian’s new app to see — from USAToday by Brett Zongker
    WASHINGTON — If you’ve ever wondered what type of tree was nearby but didn’t have a guide book, a new smartphone app allows users with no formal training to satisfy their curiosity and contribute to science at the same time. 

    Scientists have developed the first mobile app to identify plants by simply photographing a leaf. The free iPhone and iPad app, called Leafsnap, instantly searches a growing library of leaf images amassed by the Smithsonian Institution. In seconds, it returns a likely species name, high-resolution photographs and information on the tree’s flowers, fruit, seeds and bark.