Multimedia Gallery
January 31, 2014
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A bird's eye view of an Echinacea angustifolia, or narrow-leaved purple coneflower, plant.
A bird's eye view of an Echinacea angustifolia, or narrow-leaved purple coneflower, plant.
Credit: Stuart Wagenius
Images credited to the National Science Foundation, a federal agency, are in the public domain. The images were created by employees of the United States Government as part of their official duties or prepared by contractors as "works for hire" for NSF. You may freely use NSF-credited images and, at your discretion, credit NSF with a "Courtesy: National Science Foundation" notation.
Additional information about general usage can be found in Conditions.
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Related story: The truth about Echinacea: Plant commonly used for colds and flu suffers from disappearing habitat