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A database of all plants found in the U.S. and its territories, maintained by the United States Department of Agriculture.

Website: https://plants.sc.egov.usda.gov/java/

The USDA PLANTS database is one of the primary resources on plants in the United States. Some of the highlights of this database include range maps by state and county, a variety of fields that can be searched or filtered, the listing of hybrids, subspecies, and varieties, and the ability to easily export data..

For some, but not most plants, the database links to a Plant Guide on each species, an article about the plant, including some basics of its distribution, habitat, and a verbal description of it. Some pages have images, which include a mix of copyrighted images and ones with open licensing.

Although it focuses on the United States, it has a limited amount of information about plants in Canada.