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About Silphium_perfoliatum-linedrawingBBW.png


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Item Silphium perfoliatum L.
Copyright holder Britton, Nathanial Lord, and Brown, Addison
Copyright terms This image is a work of the Natural Resources Conservation Service, part of the United States Department of Agriculture, taken or made during the course of an employee's official duties. As a work of the U.S. federal government, the image is in the public domain.
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