From the U.S. Department of Agriculture Natural Resources Conservation Service, "The PLANTS Databases 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 Databases includes names, checklists, automated tools, identification information, species abstracts, distributional data, crop information, plant symbols, plant growth data, plant materials information, plant links, references, and other plant information." An FAQ section linked to the banner provides additional information.