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.
Users make the identification and share their findings with the app's growing database to map the population of trees one phone at a time.
Leafsnap debuted in May, covering all the trees in New York's Central Park and Washington's Rock Creek Park. It has been downloaded more than 150,000 times in the month.
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