"Since 1858, the Illinois Natural History Survey has been the guardian and recorder of the biological resources of Illinois---the state's biological memory.
The USDA PLANTS Database provides standardized information about the vascular plants, mosses, liverworts, hornworts, and lichens of the U.S. and its territories.
Science.gov searches over 60 databases and over 2,200 scientific websites to provide users with access to more than 200 million pages of authoritative federal science information including research and development results.