Plants DatabaseFrom the U.S. Department of Agriculture, Natural Resources Conservation service. Provides information about "vascular plants, mosses, liverworts, hornworts, and lichens of the U.S. and its territories." Entries will include scientific name, common name(s), classification, species distribution map, and other categories such as images, legal status, links, wildlife connections. Also includes topical categories such as noxious/invasive, endangered/threatened, wetlands, etc.