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JSTOR Global Plants
Global Plants is the worlds largest database of digitized plant specimens and a locus for international scientific research and collaboration.
Lewis & Clark Herbarium
Complete list of plants collected by Meriwether Lewis and William Clark during their 1803-1806 expedition to the Pacific Ocean. Plant names are accompanied by living specimens from locations in the western United States.
National Science Foundation Multimedia Gallery
Collection of images, videos, and audio clips from research sponsored by the National Science Foundation.
USDA PLANTS Image Gallery
The PLANTS Gallery emphasizes photos and line drawings of U.S. plants but also contains many cultivated or foreign taxa.
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