PLANTS Database | USDA PLANTSFrom the U.S. Department of Agriculture Natural Resources Conservation Service, “the PLANTS Database is a single source of standardized information about plants ... focuse[d] on vascular plants, mosses, liverworts, hornworts, and lichens of the U.S. and its territories. The PLANTS Database includes names, checklists, automated tools, identification information, species abstracts, distributional data, crop information, plant symbols, plant growth data, and plant materials information.